THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81
Edition: Model Aviation - 1991/05
Page Numbers: 10, 11, 62, 64, 65, 78, 80, 81
THE 1991 F3B World Championships will held Netherlands beginning August 24th Olympic Games RC Soaring Near ly 30 countries will compete Individual Team Championship titles US F3B team pilots Larry Jolly Daryl Perkins Joe Wurts Team Manager Randy Spencer sent important news fundraising raffle round trip air ticket Holland attend World Champs first prize Other prizes include Air tronics Vision radio system Airtronics Legend Sailplane kit Composite Structures Technology vacuum-bagging system custom wing bags American Sailplane Designs items major manufacturers Raffle tickets $10 drawing sched uled Nats July can also purchase beautiful souvenir T-shirts pins patches show support US Soaring team wearing Hey lets face World Champs country-against-country Sailplane competition national pride Amer ican Sailplaners can stand little taller team does well know can US has won Individual title Skip Miller 1977 Dwight Holly 1981 never Team tro phy time sure T-shirts team logo $12 5 M L XL XXL One-inch-diameter enameled pins $3 four-inch-diameter embroidered patches $5 team logo team pi lots names done seven colors very tractive Please send check raffle tickets merchandise add 10% shipping han dling USA F3B Soaring Team Box 3242 Lakewood CA 90711-3243 Randy added have working Speed have started practicing Distance using team nonteam members rabbits get used com petition again really helps go against un knowns although team practice very competi tive should Martin Bamerts Speedo 91 Slope Glider uses new DU 86-084/18 airfoil de scribes below may recall Martins discus sion wing molding techniques Sep tember 1988 column December column year pictures Martins fleet quarterscale Sailplanes February 1990 wrote about vacation visit Martin Switzerland favorite flying place Hahnenmoospass ski area high mountains south Bern summer its truly wonderful place Slope Soaring Cant wait return Martin Swiss citizen has lived New Jersey number years working tech nician US branch Swiss company beautiful workmanship Gliders diffi cult describe adjectives like impeccable flawless superb spring mind top regarded top RC pilots Switzerland does flying slopes south Jersey Martin tells employment situation tenuous Hed like stay position connected model business would natHave ever owned designed fully aero batic Glider barely stalls has such wide speed range can thermal weakest tightest updrafts same time dive al endlessly reach enormous speeds Well result latest Speedo project 10 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N Winnebago Dr SedaNa CO 80135 Above Martin Bamert gets Impressive results new DU 86-084/18 aIrfoil Speedo 91 relatively narrow 18% ailerons effective over full speed range 45-degree cut-off tips lower induced drag Below left Marlin used zigzag turbulators 67%-of-chord position Theyre 05mm thick 11mm wide 7mm pitch have 60-degree gle same turbulators placed 78% lower sides Below rIght Jurg Wermuth left superfast Speedo 84 Martin 91 version Top speeds about equal Speedo 91 outperforms Speedo 84 average-to-light wind condItions Setting 3243-meter Wildetrubel Mountain Laveygrat Hahnenmoospass Switzerland ural him Please write know something German/English-speaking super craftsman-pilot Martins description Speedo 91 Bob Holman now has plans fiberglass fuselage available beautiful 1/6-scale Rhon bussard Glider enthusiasts will also want know about Bobs new catalog Scale plans PROVEN PERFORMANCE W ebra engines offer finest German engineering wide range size power applications RIO hobbyist en gines famous reliability lasting perform ance power spare Silverlines no ex ception Another great addition Webra line-up engines feature side exhaust front intake scavenged porting ringed piston ball bearing supported crankshaft TN bar rel type carburetor demand state-of-the-art technology unparalleled performance next engine become part Webra family #WEJO22RCS Silverline 40 muffler #WE1O2ORCS Silverline 61 muffler Engine Size 40 61 OutputRPM-RangeDisplcmntBoreStrokeWeightProp HPRPM/monccmmmmmozSize 902000-15500 1452000-14000 6502100199910939x710x4 100024002200151611x711x8 Avaikible hobby stores everywhere Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 finished extensively test flew during summerlong stay Switzerland Motivated friend Jurg Wermuths superfast 180meter-span Speedo 84 uses Eppler 182 airfoil decided design something simi lar pretty much made up mind also use reflexed almost neutral pitching moment E-182 section arrived Switzerland spring 1990 browsed through some latest Euro pean RC model magazines found very inter esting relatively odd-looking airfoil called DU 86-084/18 designed windtunnel-tested Delft University Nether lands specially tailored meet high demands F3B competition flier thickness 847% conjunction 05mm-thick zigzag turbulators its drag coeffi cient does increase significantiy flaps set egrees according data published DeIft facts mind dropped idea using Eppler airfoil switched DU 86-084/18 section Martin sent section s co ordinates theres insufficient space print Please send SASE want copy BB Because very lowone percentcam ber airfoil crucial build new Speedo light possible order achieve acceptable climbing rate very light thermals fuselage chose Speedo 87 Jurg made molds keep its weight low possible laid up combination Kevlar cloth special unidirectional carbon fabric held together some fuzzy unidentified Continued page 62 DU 86084/18 DU 86-084/18 airfoil section used Speede 91 airfoil especially tailored meet high demands F38 flying less pnce twa magazines can own conrehensive dowient what Ac Soatig ix*Jstry has offer NSP Soarrig Ref erelLe catalog represents two years research effort People toi us tat S90 catalog best nvesbBent ever made ii sport wel 91 catalog er betteti order yetr NSP AC Soeitig Reference Cetab send check money order $&O0 NSP 100 pages product information Articles Reviews specs Fully IHustrated est catalog RO Soaring complete re-do 1990s catalog must-have reference NorthEast Sailplane irociucts t6 Kkby Lane WiNston Vermont 05495 802658-9432 May1991 11 Speed 40 & 6] Silverline Engines TIMATE BUSH PLANE Classic 40 Ultimate Bush Plane Explorer Ploats NEW VHS VIDEO CATALOG $695 &h Texas residents please add sales tax US AirCore MR AA,flSCk 4576 Ca e ChennaHangar 7 Dallas TX 75248 800 336 0602 ode s 2t4 250 1914 ste V ** 4620 CRANDALL-LILLE R DON INDIANA 47112 ** Large se e ion emo e ro e irp anes 6 pro essiona JM II LISTED BELOW Business since 1973 ES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OFTHE MFGWE STOCK HOURS MONDAYTHRUTHURSDAY9AM5PM FRJDAY9AM-2PM CLOSED SATURDAY& SUNDAY E 812 366-3141 A-JUSTO JIG AM BR OlD ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABASONIC-TRONICS GOLDBERGSTERLING GAS MODEL PRODSULLIVAN HALLCOTOP FLITE HOBBYPOXYVS ENGINES HOT STUFFLANIER K&BMFGMILLER SIGNORTHEAST SAITOZINGER PROPS d FORD AIRCOUPE $9995 complete listing etcplease send stamped self-address enve lope DEALERS WANTED $11995 Stafford STAFFORD KITS AVAILABLE SHORTLY B24 TWIN COMANCHE COMANCHE & MORE EAA ACRO SPORT UAS P05 EEN6O NONE PAPEUSA AS P505 ON EU ON BOXTOP JIG MOLDED COWS -PANTS WINDSHIELD ZWAWANSN ITS LuNStickum Buildum & FIyum need help call us arf/flberglass FLgt box AFTER HOURS CALL WE MIGHT BE HERE fusesageTHANKS FOR YOUR BUSINESS BILL & JOYCE Safety/Preston Continued page 60 Scalers newsletter edited Ken Peet colunm Fall 1990 issue submitted Dan Rossman concerned safety Fol lowing extract column worry about pre post flight safety check Let tell After last outing Giant Scale gentleCARBON FIBER LAMINATES 007 014 022 & 030 Thick JWROHACELL Light Rigid Foam 12 3mm GLASS CLOTH 58 oz/sq yd 75 15 20 30 & 4 oz CARBON OR KEVLAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEVLAR FABRIC TAPE KEVLAR FABRIC 17 ozIsq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products PO Box 16621 Irvine CA 92714 714 250-1107 Source Lightweight Materials flying Taylorcraft forced myself usual sometimes post-flight safety check tugging aileron check hinge security unthinkable happened never happened before An unbreakable control horn hinge snapped let go right junc tion mounting base flight failure would have destroyed Taylorcraft cause would probably never have known proves no matter bor ing dull time wasting safety seems will save much grief money Look way times have stood looking pieces wished sometime past secret look future safety check preserve plane IMAA has 25-point airworthiness inspection use during sanc tioned fly-ins note copy dates back 1983 could have amended since time As usual Im rushing complete column meet deadline publication will contact IMAA re quest latest airworthiness inspection checklist publish next safety co lumn Have another safe E RC Soaring/Blakestee Continued page 11 cross-fibers 017mm-thick carbon fabric furnished Keith Kindrick sent sample testing purposes frugal applica tion laminating resinand including white gel coatthis combination fibers yielded 30%-lighter fuselage 245-meter-span wings made white medium-weight foam cores sheeted obechi veneer skins vacuum-bagged well pressed between two very flat laminated wood blocks order wings absorb antic ipated high stress forces included carbon spars extend roughly one-third total wing span Between obechi foam core 60gramltquare-meter Keviar cloth oriented 45degree angle leading edge additional tor sional strength increased torsional rigidity needed prevent fluttering wings ex tremely high speeds 18 percent chord according airfoil specs ailerons extremely thin order give suffi cient torsional rigidity reinforced 110-gram/square-meter carbon cloth also laid 45-degree angle cases aileron servos thinned down order servos fit very thin wings wings joined Continued page 64 62 Model Aviation Build Strong Light ACPs Advanced Lightweight Materials L GIVE YOURSELF BREAK MODEL WORKSHOP AIR TREATMENT SYSTEM IMPROVES THE AIR QUALITY FOR YOU AND YOUR LOVED ONES REMOVES AIRBORNE DUST DOWN TO 03 microns ABSORBS AND NEUTRALIZES MOST FUMES FOUR STAGES OF STATE-OF-THE-ART FILTRATION TREATS UP TO 1500 CU FT SEVERAL TIMES PER HOUR PORTABLE FOR CONVENIENT BENCHTOP OPERATION ENVIRONMENTAL SOLUTIONS INTERNATIONAL 14 WOCOSIDE RD WINCHESTER MA 01890 $179 PLUS $600 S&H CHECK OR MONEY ORDER DISTRIBUTERSHIPS AVAILABLE Protect Investment Transmitter Cases $1995 lus $300 s & h Uncut foam cut foam add $10 Specify Transmitter~ cases etc 3353 S Main Suite 219 SLO Ut 84115 Ulahrosadd osleolso Allow16 X12 X5112 3 wlefor persoosi drecle clearHolds 2 TransmOaro turn pnoter en trfonl plotter wtb FOILED AGAIN! PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEEtED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES OS-PAGE ILLUSTRATED USER MANUAL owlet team P~t tcttn/~Z MflltteO talk SICt tel USSM Requite IBMCXTAT ecoweelk O .. vcnlpvle flteteetlllllle- Y~M t Give compulelL Salle type eering spevily tsr SF ditk Gend cRIed ordnec tram te CYGNET Software714 496-6961 24843 Del Prado #l4lB Dana Point CA 92629 RC Soaring/Blakeslee Continued page 62 round 10mm carbon fiber rod final touch covering wings plastic foil tail surface controls built glassmolding technology Although somewhat timeconsuming type construction yields Unwarped control surfaces well razor-sharp trailing edges RC controls rudder eleva tor ailerons flaps air brakes last three functions controlled two aileron ser vos programming Multiplex 3030 transmit ter estimated CG needed about 38 percent chord added close seven ounces lead nose Without surbula tors installed plane weighed 694 oz up giving wing loading 128 oz/sq ft big question hand much whether Speedo would fly its peculiar-looking airfoil would perform After first few launches some minor servo weight adjustments model ready seriously test flown Despite rel ative narrowness ailerons very effec tive low speeds Taldng advantage tight weak thermals surprised model reacted excessive elevator input would essentially keep circling smaller ra dius showing signs stalling straight flight starting about 40 mph wings would begin make high-pitched noise sound disappeared model slowed down impressions first day flying over headed home install selfsticking zigzag turbulator material Placed up stream laminar separation bubble chanical turbulators reduce bubble drag As re sult bubble interrupted overall drag wings reduced making model ef ficient upper turbulator located 67 per cent bottom 78 percent both measured respect leading edge Ac cording DeIft University testing data positions experimentally determined give best possible overall performance improve ment airfoil facts mind headed back slope eager find out what would different surprise high-pitched noise disap peared replaced slight rustling noise could detected flying very close Circling thermal setting flaps down 10 degrees means deflecting ailerons downward improved climb rate noticeably almost unbelievable Speedo reacted full up elevator throw slow forward flight though stalling effi cient state flight no time did model try flip over either wing still capable determining flight path have also tried stall flying upside down usually does trick again did display normal stalling behavior kept flying less straight path flight behavior did change turbulators installed though ex pected did improve performance dramat ically can say presence definitely creased Speedos overall performance restitution capability improved great deal loaded 83 oz lead ballast chambers wings increasing wing loading 144 oz/sq ft Following long dive Speedo beFor Serious Helicopter Hot Dogging PISTON/CYLINDER ASSEMBLIES Superior Horsepower WI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 ox 4003 Carlsbad CA 92008 64 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 haved built-in motor After pulling up seemed recover almost its initial height addition increasing glide angle added weight both improves stability turbu lent air enhances aerobatics capability Speedo 91 could considered per fect beginners model because its extremely un critical behavior situations Encouraged Speedos high level performance its simple docile handling am currently work ing version triple-taper wing geome try also known Schuemann wing planform DU section surely looks strange works Martin says whos argue zig zag turbulator tape Martin mentioned avallable Hobby Lobby page 85 catalog No 17 fact HL imports lot European accessories useful Sallplaners its free catalog well worth asking Martin also mentioned getting carbon fiber material Keith Kindrick last time spoke him Keith said out retail materials businessat least temporar ily same material should available Aerospace Composites Bob Holman Plans Bob recently sent copy new eight-page catalog along follow ing letter have supplying best Scale plans accessories powered RC Scale past 30 years Now have retired have little time am expanding Scale Glid ers Scale Gliders catalog made up pages pulled British RC magazines Radio Modeler RCM&E RC Model World also have plans Mike Smart Richard Green England German VTH plans catalog catalog $2 postpaid have Mike Smart plans all-built-up glass-fuselage version Rhonbussard -scale 1126-inch span Plans fuselage run $93 shipped direct airmail England Two photo packs available $25 $20 Bobs catalog has lot very nice Scale sub jects counted 120 plans running about $10 over $30 Scale Glider enthusiasts will want catalogits great daydreaming well reference Bobs address PO Box 741 San Bernardo CA 92402 new Legend kit caps illustrious list Sailpianes Airtronics Lee Renaud founded company designed well legendary line Gliders Olympic Grand Esprit Oly II Oly 650 Aquila Aquila Grande Sagitta Lee unstinting booster Soaring un timely death 1983 tremendous loss Barbara sons Bob Tim have continued Lees enthusiasm Soaring havent seen Legend air yet would like pass along impressions kit itself comparison similar designs market Flying portion kits building instructions reprinted later sec tion column gives designers word picture model flies Together Mark Allens Falcon 880 Bob Dodgsons Saber Legend represents what might called new generation RC Sailplanes Though too light F3B competition theyre about size F3B ships show F3B influence having ailerons flaps somewhat higher wing loading traditional Thermal Duration designs also require computer radios take maximum advantage surface mixing tricks including crow landing flaps down ailerons up iLL FL Y WHA T FIX Special Fast Turnaround Now Available CALL Frequency Conversion $4000 4- Includes Crystals Certification RCD AM & FM 7 Channel Receiver Special exclusive 6 meters -$7995 TX conversion available Full 1991 Specsl Rx alone 72175 mhz -$6995 OrderModel RCD100 Futabla G AM$6995 Model RCD15O Futabla J AM$6995 Model RCD200 Fulabla J FM$6995 Model RCD300 Airtronic AM$6995 Model POOl 50KB Kraft K-Line B$6995 Model RCD15WR JR AM$6995 Model RCD1 50TH Tower 500$6995 Match tuned Gold 1991 Tx FREE Tuned aligned updating Tx$7495 Tuned aligned Tx frequency change . $8495 Call Today Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75Mhz Connectors br Kratt styles Deans World & specials Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down Service Ace Cirrus EK Futaba Heathkit Hobbyshack JR KGL K-Line KO Propo Kraft KSE Logitrol Novak Royal Tower Hobbies World Engines Spectrum Analyzers Calibrated Test Instruments Large Inventory R/C Parts Crystals ter Specials List Prices Exceeds AMA Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units add $1000 Dealers Discounts available Rx Trade $5-s 10 Send Self Addressed Envelope Brochures UPS US Mail Federal Express COD Shipping Charges Extra Mastercard Visa Accepted Kraft Midwest Inc 115 E Main Northville MI 48167 313 348-0085 FAX 313 348-4175 may sound daunting believe models arent hard fly fact three ships should prove extremely popular regular AMA Duration contests Theyre perfect Sportsman Multi-Task competition adds Distance Speed tasks new Gliders fun fly fun race Legend almost exactly same size Falcon 880 113 inches its wingspan just inch larger Falcons Both have upswept tips winglets 997 square inches Legend does have area Falcon has 880 square inches Falcons may weigh 60 75 ounces depending robustly wings constructed Legend should come between 70 75 ounces Saber though somewhat larger 121-inch wingspan 1030 square inches area should also weigh about 75 ounces three designs feature variations nowfamous Schuemann wing planformstraight trail ing edge sweptback leading edges Wing loadings both Legend Saber bit under 11 oz/sq ft Falcons wing loading will between 10 12 ounces per square foot course planes can ballasted up maximum 125 oz/sq ft allowed new 1991 Sportsman Multi-Task rules Legend has aT-tail fixed stab sep arate elevator driven 85-in-long actuating lever center-pivoted fina European design practice works very well Falcon Saber have low-mounted all-flying stabs three kits come very nice fully finished fi berglass fuselages biggest differences kits show up wing design construction Falcons Sa Continued page 78 May1991 65 AH-1 STOW COBRA [v32][b-1-10-1-10]]36995 " AH-64 APACHE [v32][b-1-10-1-10]]38995 UH-1B HUEY [v32][b-1-10-1-10]]27995 UH-6DA BLACK HAWK [v32][b-1-10-1-10]]36995 WESTLAND SEAKING [v32][b-1-10-1-10]]34995 NEW AIRWOLE w/Re racts . 28995 w 759 E BROKAW RD JOSE CA 95112 TEL & FAX 408 436-1325 RC Soaring/Blakeslee Continued page 65 bers have foam core two-panel plug-on wings Legend has all-wood three-piece bolt-on wing flat center section center panel 41 tip panels 36 including 6-in winglet Falcon kits available three wing versions / balsa skins foam cores fullsize cores vacuum-bagging presheeted balsa over foam Saber kit comes onepiece obechi wood wing skinsa first US kitmaker Legend employs traditional balsa spruce ply built-up wing construction although 8-in-wide top sheeting comes one-piece /16 balsa sheets spars reinforced car bon fiber strips All-wood wing construction balsa ribs spruce spars will undoubtedly ap peal builders may feel confident about sheeting bagging foam cores three-piece wing good idea stress engineering standpoint Since center section carries bending load outboard tip-to-main panel joiners withstand much less stress former can built superstrong latter kept smaller lighter Comparison airfoils big issue days Legend uses popular 5-3021 Michael Seligs version Eppler 205 Falcon also uses S-3021 root wing transitions S-3014 end main panel creating high-bred wont find listed Soartech #8 Saber uses new Selig-Donovan 7037 section according Soartech #8 offers good LID per formance together low drag high lift builder opens Legend kit first thing hell go fuselage Its impressive T-tail fuselages need strong back end because weight stab top fin tends twist boom rough landings Legend fuse weights 105 oz really stiff Kevlar strips extend below wing behind fin leading edge glass workmanship beautiful excellent dry-joined seam has practically no voids fiberglass can opy prefit Delving further kits wood parts ac cessories reminds words Airtronics quality represent industry standard No diecutting hereevery wood part sanded shape Parts six separate plastic bags stapled box wont slide around 6-ftlong rolled plans include helpful notes instruction manual especially impressive Bound plastic lays flat has 43 pages printed both sides 8 x 11-in paper structions step-by-step very complete clude photos diagrams assure accu rate building Legend isnt intended beginners Id say anyone comfortable good poly hedral ship such Sagitta Cumic should have no trouble building flying overall impression looks like good sound design kit quality excellent should popular remain quite come last check Legend listed $24995 Ive seen discount prices 30% lower just heard however price increase expected Falcon kits range about $120 semikit just over $300 presheeted wing version Check Mark Allen 707/7929 174 NorthEast Sailplane Products 802/658Continued page 80 BOB HOLMAN PLANS-the best scale 29 years Plans Englands THE BEST IN SCALE Also Available 80 FU19OA flW leading scale modelersWe have plansPrice $23000 $2000 Shipping UPS ONLY80 FU19009 00 have won everything BESTARE EPOXY & NOT POLYESTER64 HELLCATW Show Toledo World Scale Meet andFUSELAGES MastersPlans Brian Taylor 60 P-SiB Dennis Bryant Thorpe BROS the80 F6F H ELLCAT SIMI KIT60 P-SIDx cn F leading British magazinesj69 PS1D logss0~ TBM Best Scale $50072 SPITFIREZ Model Aircraft plans Handbook 190-It $50075 FUA-10-u Scale Drawings Plans Handbook $50082 MOSQUITO RO-Model World Plans ConstGuide$500Call for0 Catalogs $400 ea 3 shipped together ordermore information BOB HOLMAN Kits Cell 714 885-3959MASTERCHAROE New 138 pg GERMAN PLANS BOOKS& VISA Accepted 0 $600 Other CatalogsINCLUDES FUSELAGE COWL CANOPY FOAM, Please ad $200 Shipped Separate ING & STAB. CORES & PLANS 78 Model Aviation 60 Engine Size Epoxy Fiberglass Fuselage Kit Super Light weight Construction Made USA No Advanced Modeling Skills Necessary Build Accepts X-Cell Kalt Hirobo GMP & Schiuter Kit includes Bodys Clear Canopy Landing Flesable Tail Drive Unit Wood5 141 U II LIV Hardware Manual Blueprint some e4 F III models also include Piiotstation Machine Gun Rocket Radar Dome & Shocks WORLD CLASS R/C HELICOPTERS & ACCESSORIES IMPORT & EXPORT NEW FAI TAN RUBBER 1/4 3116 1/8 thick 1 lb box *1475 lincludea4oz Slick Lube *1375 no lube k costs $175 10 lb box- *110O0lUPSnetiverecil Postpaid US via UPS Cal rae add 6% aeles tax Made USA Slow cure tot consistent quality Ask FAI-TAN 89/SO catalog lists 100 FF kits CROCKET HOOKS NOW MADE BY FAI SEND$150 FAX Model Supply FOR CATALOGSOOPANCE 00 90570CASONCO 00745 TEL 213 8308939 DIELS ENGt EERING INC 0 POBex lilt WOODVILLEOHIO 43469 YESTERDAYS JETS JET KITS FREE FLIGHT SCALERUIIBER POWERED STICK & TISSUE COMPLETE KITS WtTII CANOPIESDECALSPRINTWOOD AND MORE AVAILABLE tN MAY 1991 KIT #15 NORTH AMERICAN F-86D SABRE JET DOG VERSION KIT #16 NORTH AMERICAN F-tOO SUPER SABRE JET ORDER NOW FOR MAY DELIVERY BOTH KITS 1/24 SCALE $20 EACH PLUS $250 EACH SHIPPtNG $150 FOR CATALOG t4 OTHER KITS & 65 PLANS AVAILABLE DEALER INQUIRIES INVITED APC PROPELLERS Sound Supression Design High Thrust Efficiency Long Fiber Advanced Composite Material Proven Performance US Masters US Nation als Canadian Nationals World Champion ships Sports Sizes 57x3 7x3 7x4 7x5 7x6 7x7 7x8 7x9 7x10 $156 EACH 8x4 8x5 8x6 8x7 8x8 8x9 8x10$179 EACH 9x4 9x5 9x7 9x8 9x9 9x10$199EACH 95x45 lOxB 10x7 lOxS 10x9 lOx 10$229 EACH 11 x6 11 x7 11 x8 11 x9 12x6 12x7 12x8 $289 EACH Competition 78x4 78x6 78x7 9xB5 9x75 9x85 95 EACH 11 xlO 11 xli 11 x12 11 xl2W 11 x13 11 x14 12x9 12x9W 12x10 l2xlOW12x11l2xllN 12x1212x12N12x13 12x13N 12x 14 13x9 13x10$795EACH 135 x 125 135 x 14 14 x 8 14x10 14x12 14x14 144 x 105 144 x 12 15 x B 15x 10 15x 12 16 x8 lEx 10 lBxl2 95EACH Contact local hobby dealer Manufactured ny Landing Products Knights Landing California RC SoaringlBlakeslee Continued page 78 9482 exact prices Saber kits $300 direct Bob Dodgson Check recent advertise ment address telephone 206/776-8067 Speaking NorthEast Sailplane Products its 70-page catalog chock-full Sailplane kits ac cessories good information Well worth send ing $3 Quoted below Flying section Legend manual Legend very honest airplane fly will surprised easily handles plane has no bad tendencies everyone has flown prototypes has im pressed planes ability cover large ar eas sky minimal loss altitude important thing keep mind flying Legend take advantage its ability move around Quite simply sky can cover during flight better chances finding lift Legend has fantastic L/D learn plane practice should concentrate exploiting quality Keep mind Legend very clean air plane will build up speed very quickiy put dive airplane will convert speed altitude efficiently other design field very useful zoom launches encounter lift after fast run across sky Once lift Legend will climb very rapidly application up elevator dont afraid pull back stick once have centered thermal have enough stick time Legend will have very high degree confidence Legends ability get lift work maximum al titude turning characteristics Legend will also help build confidence flying airplane wing planform winglets both contribute Legends reluctance tip stall As get time plane will find self making turns slower tighter air plane size wing loading has right able make stalling say Legend stallproof because will stall slowed up too much up elevator nice know trying milk little thermal 25 feet airplane wont sud deniy give up drop wing tip Legends flaps extremely effective tow air landing WIth flaps lowered launch plane will climb very steeply tendency weave tow Dropping flaps way down div ing very effective way lose altitude building up excess speed landing approach lowering flaps 90 degrees will slow Leg end down walk still allowing full direc tional control rudder setting Legend up start setting control throws outlined plans personal preferences may dictate creasing decreasing throws slightly set ting plane up outlined will give tested setup begin Legend will also benefit mixing available computer-type ra dios now market such Vision 85P Infinity 600 Depending brand model radio may have some capabilities mentioned below amount control surface movement listed has proven work well prototypes use settings starting place tailor Legend suit own flying style Aileron/rudder couplingY4-in rudder full aileron Flap/elevator compensation -in down ele vator full flap Elevator/camber mixing3/6-in down camber full up elevator Aileron crow mixing -in up aileron full flaps Reflex camber42-in up camber flaps ailerons mixes listed order importance flying Legend radio gives choice between type mixing another let priority above help make choice Beginners Corner Tony DiGirolamo Tony guest editor charge helping inter ested folks get started RC Soaring have decided get RC Gliders looking best way get started What have begin right path youll easily get discouraged lot ways go astraywrong Glider wrong radio high start etc Ive read articles suggest can make first solo instructor Unless family name Wright Lindbergh Earhart may want give serious consideration us ing instructor pilot first thing join Glider club have president introduce instructor pilot will help select first Glider radiosomeone will stay dur ing construction phase until can suc cessfully launch recover really have careful Some ARF almost-ready-to fly models supposedly beginners can prove challenge old pros other hand some kits will everything teach fly winning Nationals remember theres no such thing allpurpose Glider Lets talk about first Glider want trainer thats designed teach fly possibly take basics competi tion some good kits Out club usually recommends two-meter-size ship something similar Sig Riser Goldberg Gen tle Lady Airtronics Oly 650 Ace Easy Ea gle Great Planes Spirit also good choices BB good stable models can keep Out trouble also bounce bet ter bigger GlidersBB Whatever dont go John Wayne make selection yourself take instruc tor Otherwise may wind up something totally unsuited needs Most beginners hesitant about putting spoilers wings Because havent seen work theres tendency shy away Put spoilers wing kit doesnt come spoilers have instruc tor help put wont need during first month flying once learn basics youd like cat litter box Lets talk about radios dont need seven-channel computerized radio get started need four-channel radio recharge able Ni-Cd batteries 1991-readyie AMA Gold sticker transmitter narrow-band receiver can find something like around $130 Again dont purchase anything unless instructor unless enjoy buying bridges Id also rec ommend purchase something new point dont have knowledge recog nize good buy used radio probably wont 1991-ready anyway 80 Model Aviation CEO APC Heres something consider during con struction phase will normally take two months build first Glider Id give se rious consideration buying used trainer someone club wait two months start flying have radio need trainer someone no longer needs Ask instructor look around Place ad club newsletter gave new member trainer sold second cost An other club member gave beginner radio Glider suggest buy something get started Youll feel better about flying something didnt spend months building crashes put back together fly again again Remember Its flying skills win contests Yes construction important youve got master basic skills reaching sky say dont have workshop garage What can Ill tell what Go down local hardware store buy flat board about 10 inches wide six feet long kind sold shelving Also buy 2 x 4-ft wood-fiber ceiling panel Its great holding pins Cut width board use contact cement stick material side board can stored under bed youre ready build put old blanket dining room ta ble set up board start gluing Dont tell cant build youre doing stuff Finally join AMA Its backbone hobby should support organiza tion because will support us See next month New Multiplex catalog Bob Boomer Beemer RC West has new 160-page Multiplex English catalog available $750 via UPS postpaid Multiplex big German hobby manufac turer along Graupner Robbe Sim prop does fantastic job offering just about everything can think associated RC hobby Make no mistake huge indus try Europe Multiplex especially well known its topquality radios Manufactured Multiplex plant Niefern near Pforzheim German radio equipment sold US exclu sively through Beemer Simprop makes its own radios JR makes Graupner radios Futaba makes radios Robbe Martin Bamert uses top-of-the-line Multiplex Profi MC 3030 loves lot nice Gliders Multiplex catalog too easiest way get catalog call Bob 602/837-0311 give him Visa Mas terCard number wish send check address 17252 E Falcon Dr #3 Fountain Hills AZ 85268D RC Electrics/Kopski Continued page 13 As shown soldering iron brought contact exposed copper wire elec tronic-grade solder applied wire-iron interface 20-to-30-watt iron small / tip fits right shown thats needed few seconds solder flow smoothly over copper onto connector metal Make sure solder wets connector also being sure confine area shown shouldnt flow forward area fuse blade will fit youre fin ished solder should look smooth shiny neatly flowed photo Incidentally Ive no problems meltdown plastic sleeve during soldering cant speak other brands connectors may behave differently case good solder ing practice leading quick quality job will al ways minimize such risk next step fun Slip M-in length A-in-diameter Du-Bro heat shrink tubing size coded yellow over connector end shown fifth photo Make sure tubing extends slightly past open end connector pic tured assures no connector metal will exposed operation finished Heat tubing covering gun carefully playing hot air blast around few seconds tubing will shrink appear flow-fit rather smoothly over connector assembly sixth photo shows such completed connector fuse plugged Please note mechanical fit fuse blade connector varies somewhat dif ferent connector brands always check tight fit gently squeezing connector curls achieve need Look telltale shiny track marks fuse blade both sets curls easier before heat shrink tubing place can done after ward fact after several fuse insertions/re movals fit will loosen bit can retight ened squeezing just little pliers right over heat shrink suggest practice connector assembly beforehand get feel operation probably worst connection installation youve followed earlier parts series youre likely using Sermos connectors main mate choice type discon nect shown noticeably poorer electrical mechanical quality simply isnt much choice connecting ATC fuses So its im Continued page 89 May 1991 81