Radio Control: Soaring

RADIO CONTROL SOARING U sJvrTiu 1 F1 OPUS 750 Michael Selig Its safe bet nearly everyone reading column familiar name Michael Selig case youre Michael designed S series model airfoils eg 53021 co designed along John Donovan SD series eg 5D7037 So important news first time Michael turns aeronautical expertise designing whole glider Furthermore designed new airfoil model S9037 airfoil proprietary coordinates wont published anytime soon Opus 750 Standard Class 100inch-wingspan glider 750 square inch wing area weighing about 48 ounces kit has lightweightunder 6 ouncesfiberglass fuselage presheeted obechi over white foam wings Stab rudder contest A2 balsa over foam As read kits should available Northeast Sailplane Productsthe sourcefor $350 Call 802 658-9482 write NSP 16 Kirby Lane Williston VT 05495 check availability Michaels design philosophy Opus 750 might described Float like butterfly. sting like bee wanted very light glider fairly high-lift airfoil could circle tightly climb out small weak thermals other words super floater overcome penetration problem light gliders have windy conditions Michael designed several unique dragreduction features including streamlined banana-shaped fuselage new low-drag profiles tail course ballast can know 1993 NSP catalog owners have already seen following piece really tells Opus 750 story warrants rereading contemplating purchase kit think youll find interesting model philosophy Thoughts Designing Opus 750 Michael Selig Scott Gregory Design Philosophy Aerodynamics. Structures. Performance . Handling major technical areas Opus 750 builds its predecessors Opus 750 represents best several sailplanes integrated single high-performance soarer does differ however significant area weight Opus 750 does follow trend increasingly heavy wing loading wing loading unballasted Opus 750 kept minimum 88 ounces per square foot excellent soaring under weak conditions Opus 750 expected very popular East Midwest light weight crucial stronger soaring conditions however Opus 750 can ballasted make top contender soaring conditions including found West State Art Airfoils Three new Selig airfoils59037 S9027 S9026are heart design fact could said Opus 750 designed around S9037 main wing airfoil stabilator vertical fin new S9026 95% S9027 8% designed specifically very low Reynolds numbers tail surfaces explain motivation behind newly-designed S9037 helpful classify several popular once-popular thermal-duration type airfoils according respective speed ranges examine trends might emerge sake discussion airfoils will classified either high-speed moderate-speed low-speed airfoils category airfoil belongs can determined part airfoil maximum camber long other characteristics eg location maximum camber amount aft camber maximum thickness etc nearly similar airfoils considered include Clark Y E193 E205 E387 FX6O-l00 S2091 S4061 SD 7037 group FX6O- 100 does quite belong due amount aft camber included because used some current designs high-speed group S3021 947% thick 296% camber E205 1048% 301% 5D7037 920% 302% ~Airfoils moderate-speed group FX6O-l00 997% 355% Clark Y 1172 355% E193 1022% 357% finally low-speed airfoils E387 906% 380% S4061 960% 390% S2091 1010% 391% Readers Soartech number eight hand beware airfoils listed tested camber some test models equal true airfoil seen airfoils break down groups having either approximately 3% 86 Model Aviation ael Seligs prototype Opus 750 Standard Class glider exceptionally light climbs weak lift curved fuselage upswept tips revealed in-flight shot Opus 750 weighs 48 ounces See text information added provide extra go wind uuu iuisu 11 $1K.u 111 IZ1vi RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only *ALSA STICKS 36 48 1/16 11410 1/16x 3/811 1/16x 1/215 3/32x1/412 3/32x3/813 3/32x1/217 1/8x1/809 311/8x1/412 371/Bo3/813 451/So1/218 553/16x3/1612 613/16x3/818 3/16x1/222 711/401/418 1/4x3/821 1/4x1/222 1/4x3/434 1/4x142 5/16x5/1623 3/8x3/829 3/8x1/233 3/8x3/444 3/81154 1/2x1/236 1/2x3/448 1/2x160 5/8x5/852 3/413/475 ALSA SHEETS 36 48 30 1/16x233 3/32 s 240 1/8x243 3/16s249 1/4x256 1/32x337 1/20x337 1/16x33749 3/32x34458 1/8x35574 3/16x36384 1/4x37598 5/16x387115 3/8x390128 1/2x3114160 3/4s3110200 1/16s4587648 3/32s4729756 1/8x48210966 3/16x49612675 1/4x411513984 3/8s4170235144 1/2s4235273200 MATCHED SHEETS 42 3/32x4109 1/8 x4129 3/16x4144 1/4 x4155 ALSATRIAHGLES 36 41425 383830 121235 343448 1l55 8ALU PLANKS36 111 50 112157 113219 114293 11l3,3302 11/2,4388 313231 313335 24475 313515 314715 TAPERED SHEETS36 14268 14388 38268 318358 123125 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa L/GHT4-6 LB WOOD 36 1/32x378 1/2078 1/1678 3/3293 1/8114 3/16132 1/4157 3/8188 1/2238 34375 1532 1/16s4123 3/32149 1/8169 3/16197 1/4237 3/8357 1/2482 18 19 24 19 21 31 26 28 32 45 57 30 39 49 58 73 55 66 82 70 98 LONE STAR EPOXYINSTANT GLUE 9 ozList 10991 oz Thick300 5 Mis6691 oz Thin300 15 Mis6692oz Thick650 30 Mm6692oz This550 TRAILING EDGE 36 14132 5116111438 381 1246 12275 UASSWOOO48 318311626 311811430 311631838 311611246 31163485 1l411442 11431848 1143480 3l831880 3181275 383490 21290 2134100 AUNULE DEALS 20-1/1613136699 20-1/16x4x361035 20-3/32x3x36875 1 5-3/32x4x36999 15-1/813136775 10-1/8x4x36775 1 5-3/1 6x3x36940 10-3/1614036899 10-1/4x3x36899 10-1/4c4x361090 1 0-3/8x3x36890 5-3/8x4x36655 5-1/2x3x36540 5-1/2x4x301110 1O-3/32x4x48936 5-1/8x4x48525 5-3/16x4x48620 5-1/4x4x48680 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 36 48 181181725 1181142028 118382232 31631162838 141 1143450 14 3184055 11411124565 38384868 381 1126077 1121 1126888 11213147587 SPRUCE TRIANGLES 36 31831847 11211284 314 31481 LDTIftYE8 HARD MAPLE 14 38 38318 38 12 318 34 1234 IS 40 48 80 58 88 BIRCH DOWELS 36 1/812 3/1617 1/419 5/1625 3/832 3 PLYBIRCH 48 1/84x12836 1I32x12550 1116x12550 118x12496 5PLYBIRCH48 3/32x 12725 1/8x12825 3/16112625 1/4x12650 3/8s12750 1/2x12900 BALSA HOT LINEOROOVEDLG860UNTS CeII18061 765 639410gm 6pmCntruITme1/OxO175 118x123503/8x3/411/8l46 LONE STAR MODELS114x8,1iIx3/45/3248 1623 S7fl se LubboCk TX 79412 Cont 48 States Handling Charge $500 pay UPS Add $400 COD $500 extra PP APO FPO accept VISA MC Discover personal checks COD 6/4% tax Texas US currency on/y Mm wood order $1000 L1 11 r21 author Saturn 29T Redesigned 29Ts have fixed stabilizer separate elevator lower price 35% 4% camber practical experience airfoils difference between 3% 4% camber large 35%-camber group Clark Y has thickness FX6O-100 has aft camber E193 same group Both aft camber increased thickness lead lower-speed flightto extent airfoils could almost considered low-speed airfoils present classification leaves E193 moderate-speed group absence modem state-of-the-art airfoil moderate-speed range separating Dale Nutters Super V resting customfit NEST storage/shipping box Strong NESTs protect fragile sailpianes Icare Sailpianes ASW-19 intended slope flying Icare manufactures former Raymond Size Scale kits two extremes seen void available performance spectrum fact coupled design philosophy placed primary emphasis thermal soaring weak conditions led development S9037 9% thick has 35% Dale toting Two-Meter Duck NEST NESTS stocked popular gliders can custom-built See text camber newly-designed S9037 incorporates recent advances understanding low drag/low Reynolds number airfoil aerodynamics made since Soartech number eight Sidelight new S9037 well S9026 59027 designed using computer program PROFOIL formed basis Dr Seligs dissertation research Additional Aerodynamic Features High Performance Besides new airfoils some additional aerodynamic fea tures make Opus 750 top performer Continued page 114 February 1994 87 NEED RIC AccEssoRiEs FLY TO HITEc RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# NILi 6 Buffered Y harness 7354# Li 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Coan 7356# LIJiiz 9 Male Servo Coan 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type orderi ng Part #followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 Smoke/Berman Continued paqe 106 maybe Sukhoi isnt midwing design Sig Manufacturing deserving special kudos Aces collaboration buddy-corded radios set up two nocharge flying lesson sites radio control control line queues both sites mostly young aspirants better perpetuate hobby Sundays final show came off cloudbursts Joe Schumacher now has 111/2 months complete construction dry out otherwise superlative Expo site Also North East Polk County airport have able accept air-traveling Expo visitors year will able more-settled Expo opens its gates again next August third though seventh Without doubt aeromodeling all-encompassing hobbies Its elements include sophisticated aeronautical design handcrafting highest level operating skills application exceeding professionals competition dozen affiliated categories technical involvement mechanical electrical radio devices useful applications non-hobby world Depending far ones interests reach can administrative participation affairs 160000member fraternity scrimmaging flying space under sun prominent hobby has distinguished catalysts such late Carl Goldberg Byron Godbersen such catalyst deserves respect appreciation also pioneering ideas Giant Scale models propulsion understand Byron surely eligible subscriber Modem Maturity has health problems recent years May behalf modelers extend best wishes continued progress toward full recovery oaring/Blakeslee Continued page 87 Fuselage Research full-scale sailplane fuselage design shows proper nose curvature can greatly reduce fuselage drag cruise thermal flight modes same principles applied Opus 750 Substantial nose drop alleviates flow separation leadingedge wing root thermal flight mode Extensive juncture fillets around wing/ body intersection bowing tailboom low cross-sectional area fuselage servos mounted line ensure lowest possible fuselage drag conventional configuration Note nose droop has practical dividend landing nose droop prevents flaps coming direct contact groundworry no about stripping servo gears Tiplets Wingtips Tiplets derivative Schuemann planform incorporated improved handling Tiplets also improve behavior laminar separation bubble Specifically low Reynolds numbers tiplet sweepback case leading edge sweepback trailing edge no sweepback confines large areas laminar separation tip regions preventing laminar separation bubble migrating inboard increasing bubble size over main wing panel Low-loss sharp-edged wingtips employed increase effective span improved launch climb performance over sailplanes conventional rounded tips noticeable Stabilator stabilator planform Opus 750 designed increase effective moment corresponding increase fuselage tail boom length its associated weight nose counterweight effective moment increase achieved employing Continued page 120 FUN WITH FREE FLIGHT SPORT&$1095 SCALEPLANES95 mer made rubber ower FLYING ACES MOTH 24 nch wingspan easily adaptable o smauesectricPRAIRIE BIRD embryo l6inch wingspan$1095 O NITE 28 P-30 28 inch wingspan suitable CO2 walnut scale 17/ inch winsnan SEND FOR OUR FULL CATALOG Uoo 4 DahD*Iakamn PO Box 710399-MA SANTEE CA 92072-0399 i U~WIq-VqyfqqqTEL 619 448-1818FAX 619 448-1833 114 Model Aviation i R/C Flight Simulator IBM PCs & Compatibles Excellent flight equations Superb graphics Several styles aircraft Easily set up fly like bird features aid learning Skylark realistic R/O Helicopter flight simulator available today Call Now 313 662-LARK Airplane version coming soon Box 1063 Lorain Ohio 44055 iUWA Phone 216 282-8354 16 Clip jcraft L L~sqto Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits 002 Rubber Power 22 Span * Tayiorcraft 1095 * Stinson voyager .. 1095 * PC-6 Porter 1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13Span *Cub895 *Stinson 125895 *vagabond895 *Farman895 *Jodel895 *Fike995 1/2 R/O Gas Electric Kits Fits Astro 035 Taylorcratt3995 Stinson 1253995 HARD TO FIND ITEMS Brown CO2 Motors Accessories Over 20 Sizes Rubber Stripl Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 RC SoaringlBlakeslee Continued page 114 sweepback Both leading trailing edges swept back Effectively sweepback moves mean aerodynamic center stabilator back having increase tailboom length Wing Planform Relative other comparable RC sailplanes main wing tiplet panels broaderthat taper gradual Specifically main wing panel 40-inch span tapers 9 75 inches tiplet eight-inch span including 175-inch tips tapers 75 475 inches regard decreased amount taper relative other comparable sailplanes several remarks can made First addition lightweight structure increase wing area leads lighter wing loading improved thermal performance Second aspect ratio decreased however higher wing chords near outer wing leads reduced profile drag offsets increase induced drag owing lower aspect ratio Third broader wing toward tip decreases tendency tip stall Thus believed areas Opus 750 either equal better comparable sailpianes Saturn 29 Layne/Urwyler built flew Saturn 29T last season liked way flew very much 29T 113-inch wingspan slightly smaller lower priced takeoff Layne Urwylers original Saturn 30 Both full house ie use six servos ailerons flaps elevator rudder 118-inch-span Saturn 30 kit comes FG fuse bagged glass/foam wings stab about 98% ARF almost ready fly sells $500 its HQ 25/9 airfoil 30 Saturn outstanding thermal machine See October 1992 column review An important unusual design feature Saturn wing joiner 36-inch length -inch seamless 6061T6 aluminum tube Saturn 30 joiner straight dihedral built outer wing panels 29T has straight wings joiner tube bent middle giving about 30 dihedral per side Since joiner extends well wing takes bending loads allowing wing spar structure lighter normal assembled its strong system doubt theres much chance breaking wing either tow air Saturn 29T has slimmer fuselage 30 uses obechi wood veneer skins foam wing stab cores Plastic tubes wing joiner already installed wing cores theres much work prior skinning Airfoil HQ 20/9 20/8 Flying weight about 70 ounces kit available either standard U-apply skins pre-sheeted flying surfaces 25T 99-inch span version available compete Standard Class Anyway before could report flying 29T Dave Layne wrote say mixed some ideas early Saturn 29T owners some ideas own put together redesigned Saturn 29T lowered price new standard kit price $199 pre-sheeted obechi version $299 same both sizes Add $15 shipping handling major design change going all-flying T-tail bolt-on stab conventional elevator Dave says new configuration provides positive pitch control less elevator servo throw required think good move because will pitch control improved mind bad before eliminating stab rocker allows top fin completely closed making stronger T-tails said efficient like looks control feel have concerned about strength fin stab weight atop fin bad landings can whip tail put lot strain fin As said enjoy flying 29T very 120 Model Aviation Associates Gives Total P11gM Line FREEDOM new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field F battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 much Its thermaling characteristics remind lot Falcon 880 Both handle exceptionally well have no bad habits therefore good choices fliers first six-servo computer-radio model same size weight Falcon has conventional all-flying stabilizers mounted low fin found Saturn 29T outstanding landing department too Its oversize flaps really slow model down can make fairly high landing pattern pull full flaps final rotate nose down about 300 come straight spot sedate controlled speed things considered 29T fine choice both sport competition flying Layne/Urwyler can reached 1808 Applegate Drive Modesto CA 95350 Tel 209 529-8457 Fax 209 549-1642 Saturn 29T kits can also purchased Northeast Sailplane Products Tel 802 658-9482 Slegers International Tel 201 366-0880 ICARE Sailplanes Canada Etienne Dorig Quebec wrote say has taken over former Raymond Size line Scale sailplanes Right now Etienne offering two small Scale models should perfect fun slope although says definitely beginners Other kits will coming along soon Etiennes description first two kits Salto H-101 53-inch span 26 ounces 210square-inch wing area glider designed slope flying will fly very light-to-mediumstrength winds very aerobatic will turn four-point rolls string its thin Goe 795 airfoil can flown very fast Ailerons actuated through cable pushrods can used flaperons two microservos fuselage epoxyfiberglass white gelcoat similar German standard canopy thermoformed clear PVC ARF kit $135 US dollars wings foam presheeted obechi Leading edge tip wing joiner root rib installed whole wing sanded shape Ailerons routed aileron cable pushrod tube installed built-up wing kit $95 ribs precut V-tail made sheet balsa Hardware plans instructions complete kit ASW-19 82-inch span 42 ounces 480square-inch wing area ASW-19 Alexander Schleicher FAI Standard Class sailplane 15 meters wingspan Icares model semiscale although fuselage 100% scale its E 203 airfoil high aspect ratio covers lot ground fully aerobatic has lot energy retention kit comes epoxy-fiberglass fuselage optionally colored white wings made foam presheeted obechi ailerons prerouted aileron push cable tubes installed builder installs leading edges wing joiners Canopy clear plastic canopy tray FG molded Tail surfaces built-up kit comes complete wood hardware CAD building plans instructions Price $130 regular fuselage $145 white fuselage Shipping handling additional information Icare s products send $1 Icare Sailplanes 381 Joseph-Huet Boucherville PQ J4B 2C5 Canada Tel 514 449-9094 NEST Model Boxes need safe way store transport ship pride joy Dale Nutter longtime glider flier has come up practical solution protecting fragile models Dales description NESTs After 20 years contest travel experience have developed perfect travel accessory custom models corrugated plastic box constructed white PackLiteTM heat-resistant waterproof material used US Postal Service others reusable shipping containers has tested ASTM standards displayed compression strength 3700 pounds per square foot Its kidproof FOCKE WULF 190 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE60-90 2-STROKE 90-1 20 4-STROKE WEIGHT9-10 LBS INTRO PRICE$18500 GIANT SCALE Me-109 Made USA SPECIFICATIONS WING SPAN 82 ENGINE SIZE SUPER TIGER 3000 WEIGHT18-20 LBS INCLUDES SCALE COCKPIT KIT INTRO PRICE$35000 P47 THUNDERBOLT Made USA SPECIFICATIONS WING SPAN 60 ENGINE SIZE WEIGHT INTRO PRICE 602-STROKE 8-85 LBS $16000 CESSNA 150 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE WEIGHT INTRO PRICE 45-60 2-STROKE 7-7 5 LBS $16000 ALL 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LOCALLY SEND TO Bru Line Industries Inc po 0ox3786 Center Line Michigan 48015 Add $2 50 sh pp ngM ch gan esidents add 4% sales tax SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AVAILARIF INDIVIDUALLV CUMrLu II EUN AUUbUHI RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 114 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT 1/2A TEXACO ENGINES & PARTS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $395 STOCK ORDERS SHIPPED WITHIN 24 HRS Since RC sailpianes often have birds names thought NEST rather box best describes foam-lined container have shipped sailpianes UPS airline baggage great success Only repairable incident occurred Southwest Airlines apparently used two NESTs stop moving 737 Shipments cardboard boxes plywood crates frequently suffer shipping damage NESTs stronger punctureproof NESTs can labeled Marks-a-Lot permanent marker erased isopropyl alcohol 7 x 13 x 52-inch NEST $7995 good Two-Meter Standard gliders fits trunk back seat cars 7 x 13 x 57-inch NEST $8495 made Falcon Legendsized gliders 7 x 15 x 60-inch SuperV NEST 7 x 13 x 62-inch Eagle NEST $8995 NESTs have full depth sides two adjustable nylon closure straps Prices include shipping handling Other sizes can custom-made specifications pricing proportional material requirements ordering NEST recommend also purchase NEST Accessories Kit $1795 includes 1 A blanket Extra full-length /2-inch soft foam insert 2 Two pillows One-inch soft foam end inserts protect wingtips rudders V-tails 3 A perch length A/C compressor insulation tubing Slit slip edge open NEST make soft field stand setting up model NEST can also used hold assembled model off ground safe getting stepped dirt wet grass etc Just position fuse nose down NEST line NEST up wind Contact D&D Specialties 7935 5 New Haven Tulsa OK 74136 Tel 918 492-3760 Fax 918 492-5641 RnR Lowers Prices two Richards Spicer Tiltman report increased volume has lowered manufacturing costs all-molded gliders passing approximately $50 savings per kit along customer popular Genesis reduced $489 $449 plus shipping Compared European-made molded gliders attractive price beautiful-looking 113-inch-span thermal model All-molded construction means surfaces have precolored gloss gelcoat finishes No finishing painting required Basically work need to sand off some flashing cut off flaps cut slot along ailerons self-hinged bottom install control rods servos radio wings stabilizer rudder molded glass carbon fiber Rohacell hollow inside except spars Repair procedures hollow parts course different bagged wood veneer foam wings worst comes worst spare parts can purchased RnR RnRs two heavier F3B-type models Synergy 91 Synergy III have cut $549 $595 respectively say heavier compared Genesis excellent fliers pilots have found both competitive AMA thermal events especially windy-weather areas RnRs cross-country model 143foot-span SB-XC can now obtained four-piece wing original three-piece wing prefer price has dropped $749 four-piece wing boon fliers smaller cars because seven-foot-long fuselage now longest piece threepiece wing nine-foot center section can chore pack Slope racing fans will interested RnRs changes popular Nova new 108/108 version features wing stretched 108 inches using HQ 10/80 airfoil has better all-round performance especially light air information write RnR Products 1120 Wrigley Way Milpitas CA 95035 call 408 946-4751 122 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII IMMEDIATE SHIPMENT VISA/MC 60 PAGE INSTRUCTION MANUAL ENLARGABLE PLANS & FULL SIZED PART PATTERNS TO BUILD 4 CHANNEL 05 ELECTRIC MOTOR POWERED RC DUCT FAN MIG 15 MODEL 4 SIZES OF FREE FLIGHT MIG 15 DUCT FAN MODELS & RUBBER POWERED FREE FLIGHT MODE Retail price $2400 Shipping handling fee $400 Dealer inquires invited Ferrell Papic 300 W Lincoln #82 Orange Ca 92665 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING BUILD & FLY THE mirtiMAX YoURSELF X r IU- uompuiw erve urana InampIon uiiralightPart 103 UltralightEasy construction 1989 Sun-N-Fun Fly-InWood constructionVideOAvaiIsbIs information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 65-5397 Aerotowing Joe McClure Memphis Tennessee kind enough write interesting report read aerotowing piece July column have admit dont read often am general sport flier mostly power fly am president White Haven R/C Tale Draggers have towing several years have good time fact flying tow plane almost much fun flying glider like tow 60-powered Great Planes Trainer 60 90-powered Big Stick have towed small 25-powered ARF trainer must say real hoot watch little trainer tug Sig Riser 100 500 feet sky have six seven club members have sailpianes releasable hooks located up close nose Some actuated up elevator some have separate servo Gliders range TwoMeter Spirit up Legend towed Hoby Hawk Klingberg Wing use 100 feet string ring end sailplane several number 64 bands tow plane shock absorption just wanted let readers know others doing too Thanks letter Joe appreciated receiving because hadnt heard towing gliders small TwoMeters normally think big Scale gliders discuss twing So its good know least club likes think small Joe didnt cover item thats imperative youre thinking about towing gliders yourself tow plane must fitted servo-actuated towline release device Its quite possible gliders towhook malfunction glider get unusual position imperils tow plane So tug pilot should able unhook towlineand glider cale/Warner Continued page 108 Want build model will confound guys field have never seen anything esoteric P-S iD two one-page three-view drawings 1924 Dietrich-Gobiet flying flivvers superb photographs range framework Kaz Suzukis Japan SR-7 1 rubber-powered ducted-fan model Doug McHard s incredible compressed-air Waterman Aerobile will love slick little book enough buy two use loaner make converts cause Its priced $995 Just getting started FF Scale month get letters guys getting interested what like think hard core hobby FF Scale Great recommend just place get everything need would certainly Peck-Polymers Sandy Peck daughter Vera work hard keep latest stuff need stock beginners books building materials CO2 motors FF Scale plans Zap razor planes cant imagine modeleroriented supplier catalog $4 Peck Polymers PO Box 710399 Santee CA 92072-0399 Rubber Scale kits cost too much recently heard guy complained about rubber kit costing ten bucks talked manufacturer kit found after paying materials plan printing boxing labor health plan employees rent phone electricity advertising office computer expenses machinery print wood etc etc firm making less twenty cents kit sold safe distance stand winding motor equal square knots motor Words wisdom Ken Sykoras 1930s model shop BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane TaIk nc accessory shop Tech Info 714-650-5004 Orders 800-795-5008 Pa Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airboe Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 30 Seconds Strap onto Aircraft Test Flown S mall 35 Size Air p lane We Personalize SOS Ynii NRTIA PW1ntAA Tt BALES ND SERVICE POR EVERYTHING B/C AFT MIDWEST INC. 116 EAST MAIN NORTNVILLB IdICmGAI 48187 313-3480085 FAX 8133484175 RF M*JE 923fl2 72Mhz 923/75 75Mhz 14923153 53Mhz 923/50 50Mhz 14923/27 27Mhz SMALL SIZE X 100 X 100 SHOWS ANTENNAS RFOUTPUT FITS ALL DIAMETER ANTENNAS WORKS WITH AM FM OR PCM SIMPLE SNAP-ON MOUNTING 881993 RELERSEM*TE Servo reversing module fits between Rx Servo Adjusts/sets neutral reverses servo direction Supplied wires add servo leads $1995 SAE foi ER VWE atalog ACE* AIRTRONICS* ARISTO CRAFT CIRRUS EK FUTABA HEATHKIT HITEC* HOBBY SHACK JR* KLINE* KC PROPO* KRAFT* NOVAK PRO LINE RCD* ROYAL TOWEP HOBBIES WORLD ENGINES ETC. * FACTORY TRAiNED ANL UTHORIZED* RCMA #21 February 1994 123 REIJYS QUALITY MODEL PRODUCTS GIANT SCALE SPECIAlISTS Zenoah Quadra Sales Parts -Service 1/4 1/3 scale kits Ercoupe Tomahawk -J3 Kitten Kinner -Taylorcraft Quartermaster 16 Main St Phelps NY 14532 Catalog $100 315-548-3779

RADIO CONTROL SOARING U sJvrTiu 1 F1 OPUS 750 Michael Selig Its safe bet nearly everyone reading column familiar name Michael Selig case youre Michael designed S series model airfoils eg 53021 co designed along John Donovan SD series eg 5D7037 So important news first time Michael turns aeronautical expertise designing whole glider Furthermore designed new airfoil model S9037 airfoil proprietary coordinates wont published anytime soon Opus 750 Standard Class 100inch-wingspan glider 750 square inch wing area weighing about 48 ounces kit has lightweightunder 6 ouncesfiberglass fuselage presheeted obechi over white foam wings Stab rudder contest A2 balsa over foam As read kits should available Northeast Sailplane Productsthe sourcefor $350 Call 802 658-9482 write NSP 16 Kirby Lane Williston VT 05495 check availability Michaels design philosophy Opus 750 might described Float like butterfly. sting like bee wanted very light glider fairly high-lift airfoil could circle tightly climb out small weak thermals other words super floater overcome penetration problem light gliders have windy conditions Michael designed several unique dragreduction features including streamlined banana-shaped fuselage new low-drag profiles tail course ballast can know 1993 NSP catalog owners have already seen following piece really tells Opus 750 story warrants rereading contemplating purchase kit think youll find interesting model philosophy Thoughts Designing Opus 750 Michael Selig Scott Gregory Design Philosophy Aerodynamics. Structures. Performance . Handling major technical areas Opus 750 builds its predecessors Opus 750 represents best several sailplanes integrated single high-performance soarer does differ however significant area weight Opus 750 does follow trend increasingly heavy wing loading wing loading unballasted Opus 750 kept minimum 88 ounces per square foot excellent soaring under weak conditions Opus 750 expected very popular East Midwest light weight crucial stronger soaring conditions however Opus 750 can ballasted make top contender soaring conditions including found West State Art Airfoils Three new Selig airfoils59037 S9027 S9026are heart design fact could said Opus 750 designed around S9037 main wing airfoil stabilator vertical fin new S9026 95% S9027 8% designed specifically very low Reynolds numbers tail surfaces explain motivation behind newly-designed S9037 helpful classify several popular once-popular thermal-duration type airfoils according respective speed ranges examine trends might emerge sake discussion airfoils will classified either high-speed moderate-speed low-speed airfoils category airfoil belongs can determined part airfoil maximum camber long other characteristics eg location maximum camber amount aft camber maximum thickness etc nearly similar airfoils considered include Clark Y E193 E205 E387 FX6O-l00 S2091 S4061 SD 7037 group FX6O- 100 does quite belong due amount aft camber included because used some current designs high-speed group S3021 947% thick 296% camber E205 1048% 301% 5D7037 920% 302% ~Airfoils moderate-speed group FX6O-l00 997% 355% Clark Y 1172 355% E193 1022% 357% finally low-speed airfoils E387 906% 380% S4061 960% 390% S2091 1010% 391% Readers Soartech number eight hand beware airfoils listed tested camber some test models equal true airfoil seen airfoils break down groups having either approximately 3% 86 Model Aviation ael Seligs prototype Opus 750 Standard Class glider exceptionally light climbs weak lift curved fuselage upswept tips revealed in-flight shot Opus 750 weighs 48 ounces See text information added provide extra go wind uuu iuisu 11 $1K.u 111 IZ1vi RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only *ALSA STICKS 36 48 1/16 11410 1/16x 3/811 1/16x 1/215 3/32x1/412 3/32x3/813 3/32x1/217 1/8x1/809 311/8x1/412 371/Bo3/813 451/So1/218 553/16x3/1612 613/16x3/818 3/16x1/222 711/401/418 1/4x3/821 1/4x1/222 1/4x3/434 1/4x142 5/16x5/1623 3/8x3/829 3/8x1/233 3/8x3/444 3/81154 1/2x1/236 1/2x3/448 1/2x160 5/8x5/852 3/413/475 ALSA SHEETS 36 48 30 1/16x233 3/32 s 240 1/8x243 3/16s249 1/4x256 1/32x337 1/20x337 1/16x33749 3/32x34458 1/8x35574 3/16x36384 1/4x37598 5/16x387115 3/8x390128 1/2x3114160 3/4s3110200 1/16s4587648 3/32s4729756 1/8x48210966 3/16x49612675 1/4x411513984 3/8s4170235144 1/2s4235273200 MATCHED SHEETS 42 3/32x4109 1/8 x4129 3/16x4144 1/4 x4155 ALSATRIAHGLES 36 41425 383830 121235 343448 1l55 8ALU PLANKS36 111 50 112157 113219 114293 11l3,3302 11/2,4388 313231 313335 24475 313515 314715 TAPERED SHEETS36 14268 14388 38268 318358 123125 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa L/GHT4-6 LB WOOD 36 1/32x378 1/2078 1/1678 3/3293 1/8114 3/16132 1/4157 3/8188 1/2238 34375 1532 1/16s4123 3/32149 1/8169 3/16197 1/4237 3/8357 1/2482 18 19 24 19 21 31 26 28 32 45 57 30 39 49 58 73 55 66 82 70 98 LONE STAR EPOXYINSTANT GLUE 9 ozList 10991 oz Thick300 5 Mis6691 oz Thin300 15 Mis6692oz Thick650 30 Mm6692oz This550 TRAILING EDGE 36 14132 5116111438 381 1246 12275 UASSWOOO48 318311626 311811430 311631838 311611246 31163485 1l411442 11431848 1143480 3l831880 3181275 383490 21290 2134100 AUNULE DEALS 20-1/1613136699 20-1/16x4x361035 20-3/32x3x36875 1 5-3/32x4x36999 15-1/813136775 10-1/8x4x36775 1 5-3/1 6x3x36940 10-3/1614036899 10-1/4x3x36899 10-1/4c4x361090 1 0-3/8x3x36890 5-3/8x4x36655 5-1/2x3x36540 5-1/2x4x301110 1O-3/32x4x48936 5-1/8x4x48525 5-3/16x4x48620 5-1/4x4x48680 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 36 48 181181725 1181142028 118382232 31631162838 141 1143450 14 3184055 11411124565 38384868 381 1126077 1121 1126888 11213147587 SPRUCE TRIANGLES 36 31831847 11211284 314 31481 LDTIftYE8 HARD MAPLE 14 38 38318 38 12 318 34 1234 IS 40 48 80 58 88 BIRCH DOWELS 36 1/812 3/1617 1/419 5/1625 3/832 3 PLYBIRCH 48 1/84x12836 1I32x12550 1116x12550 118x12496 5PLYBIRCH48 3/32x 12725 1/8x12825 3/16112625 1/4x12650 3/8s12750 1/2x12900 BALSA HOT LINEOROOVEDLG860UNTS CeII18061 765 639410gm 6pmCntruITme1/OxO175 118x123503/8x3/411/8l46 LONE STAR MODELS114x8,1iIx3/45/3248 1623 S7fl se LubboCk TX 79412 Cont 48 States Handling Charge $500 pay UPS Add $400 COD $500 extra PP APO FPO accept VISA MC Discover personal checks COD 6/4% tax Texas US currency on/y Mm wood order $1000 L1 11 r21 author Saturn 29T Redesigned 29Ts have fixed stabilizer separate elevator lower price 35% 4% camber practical experience airfoils difference between 3% 4% camber large 35%-camber group Clark Y has thickness FX6O-100 has aft camber E193 same group Both aft camber increased thickness lead lower-speed flightto extent airfoils could almost considered low-speed airfoils present classification leaves E193 moderate-speed group absence modem state-of-the-art airfoil moderate-speed range separating Dale Nutters Super V resting customfit NEST storage/shipping box Strong NESTs protect fragile sailpianes Icare Sailpianes ASW-19 intended slope flying Icare manufactures former Raymond Size Scale kits two extremes seen void available performance spectrum fact coupled design philosophy placed primary emphasis thermal soaring weak conditions led development S9037 9% thick has 35% Dale toting Two-Meter Duck NEST NESTS stocked popular gliders can custom-built See text camber newly-designed S9037 incorporates recent advances understanding low drag/low Reynolds number airfoil aerodynamics made since Soartech number eight Sidelight new S9037 well S9026 59027 designed using computer program PROFOIL formed basis Dr Seligs dissertation research Additional Aerodynamic Features High Performance Besides new airfoils some additional aerodynamic fea tures make Opus 750 top performer Continued page 114 February 1994 87 NEED RIC AccEssoRiEs FLY TO HITEc RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# NILi 6 Buffered Y harness 7354# Li 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Coan 7356# LIJiiz 9 Male Servo Coan 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type orderi ng Part #followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 Smoke/Berman Continued paqe 106 maybe Sukhoi isnt midwing design Sig Manufacturing deserving special kudos Aces collaboration buddy-corded radios set up two nocharge flying lesson sites radio control control line queues both sites mostly young aspirants better perpetuate hobby Sundays final show came off cloudbursts Joe Schumacher now has 111/2 months complete construction dry out otherwise superlative Expo site Also North East Polk County airport have able accept air-traveling Expo visitors year will able more-settled Expo opens its gates again next August third though seventh Without doubt aeromodeling all-encompassing hobbies Its elements include sophisticated aeronautical design handcrafting highest level operating skills application exceeding professionals competition dozen affiliated categories technical involvement mechanical electrical radio devices useful applications non-hobby world Depending far ones interests reach can administrative participation affairs 160000member fraternity scrimmaging flying space under sun prominent hobby has distinguished catalysts such late Carl Goldberg Byron Godbersen such catalyst deserves respect appreciation also pioneering ideas Giant Scale models propulsion understand Byron surely eligible subscriber Modem Maturity has health problems recent years May behalf modelers extend best wishes continued progress toward full recovery oaring/Blakeslee Continued page 87 Fuselage Research full-scale sailplane fuselage design shows proper nose curvature can greatly reduce fuselage drag cruise thermal flight modes same principles applied Opus 750 Substantial nose drop alleviates flow separation leadingedge wing root thermal flight mode Extensive juncture fillets around wing/ body intersection bowing tailboom low cross-sectional area fuselage servos mounted line ensure lowest possible fuselage drag conventional configuration Note nose droop has practical dividend landing nose droop prevents flaps coming direct contact groundworry no about stripping servo gears Tiplets Wingtips Tiplets derivative Schuemann planform incorporated improved handling Tiplets also improve behavior laminar separation bubble Specifically low Reynolds numbers tiplet sweepback case leading edge sweepback trailing edge no sweepback confines large areas laminar separation tip regions preventing laminar separation bubble migrating inboard increasing bubble size over main wing panel Low-loss sharp-edged wingtips employed increase effective span improved launch climb performance over sailplanes conventional rounded tips noticeable Stabilator stabilator planform Opus 750 designed increase effective moment corresponding increase fuselage tail boom length its associated weight nose counterweight effective moment increase achieved employing Continued page 120 FUN WITH FREE FLIGHT SPORT&$1095 SCALEPLANES95 mer made rubber ower FLYING ACES MOTH 24 nch wingspan easily adaptable o smauesectricPRAIRIE BIRD embryo l6inch wingspan$1095 O NITE 28 P-30 28 inch wingspan suitable CO2 walnut scale 17/ inch winsnan SEND FOR OUR FULL CATALOG Uoo 4 DahD*Iakamn PO Box 710399-MA SANTEE CA 92072-0399 i U~WIq-VqyfqqqTEL 619 448-1818FAX 619 448-1833 114 Model Aviation i R/C Flight Simulator IBM PCs & Compatibles Excellent flight equations Superb graphics Several styles aircraft Easily set up fly like bird features aid learning Skylark realistic R/O Helicopter flight simulator available today Call Now 313 662-LARK Airplane version coming soon Box 1063 Lorain Ohio 44055 iUWA Phone 216 282-8354 16 Clip jcraft L L~sqto Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits 002 Rubber Power 22 Span * Tayiorcraft 1095 * Stinson voyager .. 1095 * PC-6 Porter 1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13Span *Cub895 *Stinson 125895 *vagabond895 *Farman895 *Jodel895 *Fike995 1/2 R/O Gas Electric Kits Fits Astro 035 Taylorcratt3995 Stinson 1253995 HARD TO FIND ITEMS Brown CO2 Motors Accessories Over 20 Sizes Rubber Stripl Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 RC SoaringlBlakeslee Continued page 114 sweepback Both leading trailing edges swept back Effectively sweepback moves mean aerodynamic center stabilator back having increase tailboom length Wing Planform Relative other comparable RC sailplanes main wing tiplet panels broaderthat taper gradual Specifically main wing panel 40-inch span tapers 9 75 inches tiplet eight-inch span including 175-inch tips tapers 75 475 inches regard decreased amount taper relative other comparable sailplanes several remarks can made First addition lightweight structure increase wing area leads lighter wing loading improved thermal performance Second aspect ratio decreased however higher wing chords near outer wing leads reduced profile drag offsets increase induced drag owing lower aspect ratio Third broader wing toward tip decreases tendency tip stall Thus believed areas Opus 750 either equal better comparable sailpianes Saturn 29 Layne/Urwyler built flew Saturn 29T last season liked way flew very much 29T 113-inch wingspan slightly smaller lower priced takeoff Layne Urwylers original Saturn 30 Both full house ie use six servos ailerons flaps elevator rudder 118-inch-span Saturn 30 kit comes FG fuse bagged glass/foam wings stab about 98% ARF almost ready fly sells $500 its HQ 25/9 airfoil 30 Saturn outstanding thermal machine See October 1992 column review An important unusual design feature Saturn wing joiner 36-inch length -inch seamless 6061T6 aluminum tube Saturn 30 joiner straight dihedral built outer wing panels 29T has straight wings joiner tube bent middle giving about 30 dihedral per side Since joiner extends well wing takes bending loads allowing wing spar structure lighter normal assembled its strong system doubt theres much chance breaking wing either tow air Saturn 29T has slimmer fuselage 30 uses obechi wood veneer skins foam wing stab cores Plastic tubes wing joiner already installed wing cores theres much work prior skinning Airfoil HQ 20/9 20/8 Flying weight about 70 ounces kit available either standard U-apply skins pre-sheeted flying surfaces 25T 99-inch span version available compete Standard Class Anyway before could report flying 29T Dave Layne wrote say mixed some ideas early Saturn 29T owners some ideas own put together redesigned Saturn 29T lowered price new standard kit price $199 pre-sheeted obechi version $299 same both sizes Add $15 shipping handling major design change going all-flying T-tail bolt-on stab conventional elevator Dave says new configuration provides positive pitch control less elevator servo throw required think good move because will pitch control improved mind bad before eliminating stab rocker allows top fin completely closed making stronger T-tails said efficient like looks control feel have concerned about strength fin stab weight atop fin bad landings can whip tail put lot strain fin As said enjoy flying 29T very 120 Model Aviation Associates Gives Total P11gM Line FREEDOM new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field F battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 much Its thermaling characteristics remind lot Falcon 880 Both handle exceptionally well have no bad habits therefore good choices fliers first six-servo computer-radio model same size weight Falcon has conventional all-flying stabilizers mounted low fin found Saturn 29T outstanding landing department too Its oversize flaps really slow model down can make fairly high landing pattern pull full flaps final rotate nose down about 300 come straight spot sedate controlled speed things considered 29T fine choice both sport competition flying Layne/Urwyler can reached 1808 Applegate Drive Modesto CA 95350 Tel 209 529-8457 Fax 209 549-1642 Saturn 29T kits can also purchased Northeast Sailplane Products Tel 802 658-9482 Slegers International Tel 201 366-0880 ICARE Sailplanes Canada Etienne Dorig Quebec wrote say has taken over former Raymond Size line Scale sailplanes Right now Etienne offering two small Scale models should perfect fun slope although says definitely beginners Other kits will coming along soon Etiennes description first two kits Salto H-101 53-inch span 26 ounces 210square-inch wing area glider designed slope flying will fly very light-to-mediumstrength winds very aerobatic will turn four-point rolls string its thin Goe 795 airfoil can flown very fast Ailerons actuated through cable pushrods can used flaperons two microservos fuselage epoxyfiberglass white gelcoat similar German standard canopy thermoformed clear PVC ARF kit $135 US dollars wings foam presheeted obechi Leading edge tip wing joiner root rib installed whole wing sanded shape Ailerons routed aileron cable pushrod tube installed built-up wing kit $95 ribs precut V-tail made sheet balsa Hardware plans instructions complete kit ASW-19 82-inch span 42 ounces 480square-inch wing area ASW-19 Alexander Schleicher FAI Standard Class sailplane 15 meters wingspan Icares model semiscale although fuselage 100% scale its E 203 airfoil high aspect ratio covers lot ground fully aerobatic has lot energy retention kit comes epoxy-fiberglass fuselage optionally colored white wings made foam presheeted obechi ailerons prerouted aileron push cable tubes installed builder installs leading edges wing joiners Canopy clear plastic canopy tray FG molded Tail surfaces built-up kit comes complete wood hardware CAD building plans instructions Price $130 regular fuselage $145 white fuselage Shipping handling additional information Icare s products send $1 Icare Sailplanes 381 Joseph-Huet Boucherville PQ J4B 2C5 Canada Tel 514 449-9094 NEST Model Boxes need safe way store transport ship pride joy Dale Nutter longtime glider flier has come up practical solution protecting fragile models Dales description NESTs After 20 years contest travel experience have developed perfect travel accessory custom models corrugated plastic box constructed white PackLiteTM heat-resistant waterproof material used US Postal Service others reusable shipping containers has tested ASTM standards displayed compression strength 3700 pounds per square foot Its kidproof FOCKE WULF 190 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE60-90 2-STROKE 90-1 20 4-STROKE WEIGHT9-10 LBS INTRO PRICE$18500 GIANT SCALE Me-109 Made USA SPECIFICATIONS WING SPAN 82 ENGINE SIZE SUPER TIGER 3000 WEIGHT18-20 LBS INCLUDES SCALE COCKPIT KIT INTRO PRICE$35000 P47 THUNDERBOLT Made USA SPECIFICATIONS WING SPAN 60 ENGINE SIZE WEIGHT INTRO PRICE 602-STROKE 8-85 LBS $16000 CESSNA 150 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE WEIGHT INTRO PRICE 45-60 2-STROKE 7-7 5 LBS $16000 ALL 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LOCALLY SEND TO Bru Line Industries Inc po 0ox3786 Center Line Michigan 48015 Add $2 50 sh pp ngM ch gan esidents add 4% sales tax SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AVAILARIF INDIVIDUALLV CUMrLu II EUN AUUbUHI RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 114 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT 1/2A TEXACO ENGINES & PARTS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $395 STOCK ORDERS SHIPPED WITHIN 24 HRS Since RC sailpianes often have birds names thought NEST rather box best describes foam-lined container have shipped sailpianes UPS airline baggage great success Only repairable incident occurred Southwest Airlines apparently used two NESTs stop moving 737 Shipments cardboard boxes plywood crates frequently suffer shipping damage NESTs stronger punctureproof NESTs can labeled Marks-a-Lot permanent marker erased isopropyl alcohol 7 x 13 x 52-inch NEST $7995 good Two-Meter Standard gliders fits trunk back seat cars 7 x 13 x 57-inch NEST $8495 made Falcon Legendsized gliders 7 x 15 x 60-inch SuperV NEST 7 x 13 x 62-inch Eagle NEST $8995 NESTs have full depth sides two adjustable nylon closure straps Prices include shipping handling Other sizes can custom-made specifications pricing proportional material requirements ordering NEST recommend also purchase NEST Accessories Kit $1795 includes 1 A blanket Extra full-length /2-inch soft foam insert 2 Two pillows One-inch soft foam end inserts protect wingtips rudders V-tails 3 A perch length A/C compressor insulation tubing Slit slip edge open NEST make soft field stand setting up model NEST can also used hold assembled model off ground safe getting stepped dirt wet grass etc Just position fuse nose down NEST line NEST up wind Contact D&D Specialties 7935 5 New Haven Tulsa OK 74136 Tel 918 492-3760 Fax 918 492-5641 RnR Lowers Prices two Richards Spicer Tiltman report increased volume has lowered manufacturing costs all-molded gliders passing approximately $50 savings per kit along customer popular Genesis reduced $489 $449 plus shipping Compared European-made molded gliders attractive price beautiful-looking 113-inch-span thermal model All-molded construction means surfaces have precolored gloss gelcoat finishes No finishing painting required Basically work need to sand off some flashing cut off flaps cut slot along ailerons self-hinged bottom install control rods servos radio wings stabilizer rudder molded glass carbon fiber Rohacell hollow inside except spars Repair procedures hollow parts course different bagged wood veneer foam wings worst comes worst spare parts can purchased RnR RnRs two heavier F3B-type models Synergy 91 Synergy III have cut $549 $595 respectively say heavier compared Genesis excellent fliers pilots have found both competitive AMA thermal events especially windy-weather areas RnRs cross-country model 143foot-span SB-XC can now obtained four-piece wing original three-piece wing prefer price has dropped $749 four-piece wing boon fliers smaller cars because seven-foot-long fuselage now longest piece threepiece wing nine-foot center section can chore pack Slope racing fans will interested RnRs changes popular Nova new 108/108 version features wing stretched 108 inches using HQ 10/80 airfoil has better all-round performance especially light air information write RnR Products 1120 Wrigley Way Milpitas CA 95035 call 408 946-4751 122 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII IMMEDIATE SHIPMENT VISA/MC 60 PAGE INSTRUCTION MANUAL ENLARGABLE PLANS & FULL SIZED PART PATTERNS TO BUILD 4 CHANNEL 05 ELECTRIC MOTOR POWERED RC DUCT FAN MIG 15 MODEL 4 SIZES OF FREE FLIGHT MIG 15 DUCT FAN MODELS & RUBBER POWERED FREE FLIGHT MODE Retail price $2400 Shipping handling fee $400 Dealer inquires invited Ferrell Papic 300 W Lincoln #82 Orange Ca 92665 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING BUILD & FLY THE mirtiMAX YoURSELF X r IU- uompuiw erve urana InampIon uiiralightPart 103 UltralightEasy construction 1989 Sun-N-Fun Fly-InWood constructionVideOAvaiIsbIs information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 65-5397 Aerotowing Joe McClure Memphis Tennessee kind enough write interesting report read aerotowing piece July column have admit dont read often am general sport flier mostly power fly am president White Haven R/C Tale Draggers have towing several years have good time fact flying tow plane almost much fun flying glider like tow 60-powered Great Planes Trainer 60 90-powered Big Stick have towed small 25-powered ARF trainer must say real hoot watch little trainer tug Sig Riser 100 500 feet sky have six seven club members have sailpianes releasable hooks located up close nose Some actuated up elevator some have separate servo Gliders range TwoMeter Spirit up Legend towed Hoby Hawk Klingberg Wing use 100 feet string ring end sailplane several number 64 bands tow plane shock absorption just wanted let readers know others doing too Thanks letter Joe appreciated receiving because hadnt heard towing gliders small TwoMeters normally think big Scale gliders discuss twing So its good know least club likes think small Joe didnt cover item thats imperative youre thinking about towing gliders yourself tow plane must fitted servo-actuated towline release device Its quite possible gliders towhook malfunction glider get unusual position imperils tow plane So tug pilot should able unhook towlineand glider cale/Warner Continued page 108 Want build model will confound guys field have never seen anything esoteric P-S iD two one-page three-view drawings 1924 Dietrich-Gobiet flying flivvers superb photographs range framework Kaz Suzukis Japan SR-7 1 rubber-powered ducted-fan model Doug McHard s incredible compressed-air Waterman Aerobile will love slick little book enough buy two use loaner make converts cause Its priced $995 Just getting started FF Scale month get letters guys getting interested what like think hard core hobby FF Scale Great recommend just place get everything need would certainly Peck-Polymers Sandy Peck daughter Vera work hard keep latest stuff need stock beginners books building materials CO2 motors FF Scale plans Zap razor planes cant imagine modeleroriented supplier catalog $4 Peck Polymers PO Box 710399 Santee CA 92072-0399 Rubber Scale kits cost too much recently heard guy complained about rubber kit costing ten bucks talked manufacturer kit found after paying materials plan printing boxing labor health plan employees rent phone electricity advertising office computer expenses machinery print wood etc etc firm making less twenty cents kit sold safe distance stand winding motor equal square knots motor Words wisdom Ken Sykoras 1930s model shop BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane TaIk nc accessory shop Tech Info 714-650-5004 Orders 800-795-5008 Pa Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airboe Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 30 Seconds Strap onto Aircraft Test Flown S mall 35 Size Air p lane We Personalize SOS Ynii NRTIA PW1ntAA Tt BALES ND SERVICE POR EVERYTHING B/C AFT MIDWEST INC. 116 EAST MAIN NORTNVILLB IdICmGAI 48187 313-3480085 FAX 8133484175 RF M*JE 923fl2 72Mhz 923/75 75Mhz 14923153 53Mhz 923/50 50Mhz 14923/27 27Mhz SMALL SIZE X 100 X 100 SHOWS ANTENNAS RFOUTPUT FITS ALL DIAMETER ANTENNAS WORKS WITH AM FM 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RADIO CONTROL SOARING U sJvrTiu 1 F1 OPUS 750 Michael Selig Its safe bet nearly everyone reading column familiar name Michael Selig case youre Michael designed S series model airfoils eg 53021 co designed along John Donovan SD series eg 5D7037 So important news first time Michael turns aeronautical expertise designing whole glider Furthermore designed new airfoil model S9037 airfoil proprietary coordinates wont published anytime soon Opus 750 Standard Class 100inch-wingspan glider 750 square inch wing area weighing about 48 ounces kit has lightweightunder 6 ouncesfiberglass fuselage presheeted obechi over white foam wings Stab rudder contest A2 balsa over foam As read kits should available Northeast Sailplane Productsthe sourcefor $350 Call 802 658-9482 write NSP 16 Kirby Lane Williston VT 05495 check availability Michaels design philosophy Opus 750 might described Float like butterfly. sting like bee wanted very light glider fairly high-lift airfoil could circle tightly climb out small weak thermals other words super floater overcome penetration problem light gliders have windy conditions Michael designed several unique dragreduction features including streamlined banana-shaped fuselage new low-drag profiles tail course ballast can know 1993 NSP catalog owners have already seen following piece really tells Opus 750 story warrants rereading contemplating purchase kit think youll find interesting model philosophy Thoughts Designing Opus 750 Michael Selig Scott Gregory Design Philosophy Aerodynamics. Structures. Performance . Handling major technical areas Opus 750 builds its predecessors Opus 750 represents best several sailplanes integrated single high-performance soarer does differ however significant area weight Opus 750 does follow trend increasingly heavy wing loading wing loading unballasted Opus 750 kept minimum 88 ounces per square foot excellent soaring under weak conditions Opus 750 expected very popular East Midwest light weight crucial stronger soaring conditions however Opus 750 can ballasted make top contender soaring conditions including found West State Art Airfoils Three new Selig airfoils59037 S9027 S9026are heart design fact could said Opus 750 designed around S9037 main wing airfoil stabilator vertical fin new S9026 95% S9027 8% designed specifically very low Reynolds numbers tail surfaces explain motivation behind newly-designed S9037 helpful classify several popular once-popular thermal-duration type airfoils according respective speed ranges examine trends might emerge sake discussion airfoils will classified either high-speed moderate-speed low-speed airfoils category airfoil belongs can determined part airfoil maximum camber long other characteristics eg location maximum camber amount aft camber maximum thickness etc nearly similar airfoils considered include Clark Y E193 E205 E387 FX6O-l00 S2091 S4061 SD 7037 group FX6O- 100 does quite belong due amount aft camber included because used some current designs high-speed group S3021 947% thick 296% camber E205 1048% 301% 5D7037 920% 302% ~Airfoils moderate-speed group FX6O-l00 997% 355% Clark Y 1172 355% E193 1022% 357% finally low-speed airfoils E387 906% 380% S4061 960% 390% S2091 1010% 391% Readers Soartech number eight hand beware airfoils listed tested camber some test models equal true airfoil seen airfoils break down groups having either approximately 3% 86 Model Aviation ael Seligs prototype Opus 750 Standard Class glider exceptionally light climbs weak lift curved fuselage upswept tips revealed in-flight shot Opus 750 weighs 48 ounces See text information added provide extra go wind uuu iuisu 11 $1K.u 111 IZ1vi RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only *ALSA STICKS 36 48 1/16 11410 1/16x 3/811 1/16x 1/215 3/32x1/412 3/32x3/813 3/32x1/217 1/8x1/809 311/8x1/412 371/Bo3/813 451/So1/218 553/16x3/1612 613/16x3/818 3/16x1/222 711/401/418 1/4x3/821 1/4x1/222 1/4x3/434 1/4x142 5/16x5/1623 3/8x3/829 3/8x1/233 3/8x3/444 3/81154 1/2x1/236 1/2x3/448 1/2x160 5/8x5/852 3/413/475 ALSA SHEETS 36 48 30 1/16x233 3/32 s 240 1/8x243 3/16s249 1/4x256 1/32x337 1/20x337 1/16x33749 3/32x34458 1/8x35574 3/16x36384 1/4x37598 5/16x387115 3/8x390128 1/2x3114160 3/4s3110200 1/16s4587648 3/32s4729756 1/8x48210966 3/16x49612675 1/4x411513984 3/8s4170235144 1/2s4235273200 MATCHED SHEETS 42 3/32x4109 1/8 x4129 3/16x4144 1/4 x4155 ALSATRIAHGLES 36 41425 383830 121235 343448 1l55 8ALU PLANKS36 111 50 112157 113219 114293 11l3,3302 11/2,4388 313231 313335 24475 313515 314715 TAPERED SHEETS36 14268 14388 38268 318358 123125 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa L/GHT4-6 LB WOOD 36 1/32x378 1/2078 1/1678 3/3293 1/8114 3/16132 1/4157 3/8188 1/2238 34375 1532 1/16s4123 3/32149 1/8169 3/16197 1/4237 3/8357 1/2482 18 19 24 19 21 31 26 28 32 45 57 30 39 49 58 73 55 66 82 70 98 LONE STAR EPOXYINSTANT GLUE 9 ozList 10991 oz Thick300 5 Mis6691 oz Thin300 15 Mis6692oz Thick650 30 Mm6692oz This550 TRAILING EDGE 36 14132 5116111438 381 1246 12275 UASSWOOO48 318311626 311811430 311631838 311611246 31163485 1l411442 11431848 1143480 3l831880 3181275 383490 21290 2134100 AUNULE DEALS 20-1/1613136699 20-1/16x4x361035 20-3/32x3x36875 1 5-3/32x4x36999 15-1/813136775 10-1/8x4x36775 1 5-3/1 6x3x36940 10-3/1614036899 10-1/4x3x36899 10-1/4c4x361090 1 0-3/8x3x36890 5-3/8x4x36655 5-1/2x3x36540 5-1/2x4x301110 1O-3/32x4x48936 5-1/8x4x48525 5-3/16x4x48620 5-1/4x4x48680 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 36 48 181181725 1181142028 118382232 31631162838 141 1143450 14 3184055 11411124565 38384868 381 1126077 1121 1126888 11213147587 SPRUCE TRIANGLES 36 31831847 11211284 314 31481 LDTIftYE8 HARD MAPLE 14 38 38318 38 12 318 34 1234 IS 40 48 80 58 88 BIRCH DOWELS 36 1/812 3/1617 1/419 5/1625 3/832 3 PLYBIRCH 48 1/84x12836 1I32x12550 1116x12550 118x12496 5PLYBIRCH48 3/32x 12725 1/8x12825 3/16112625 1/4x12650 3/8s12750 1/2x12900 BALSA HOT LINEOROOVEDLG860UNTS CeII18061 765 639410gm 6pmCntruITme1/OxO175 118x123503/8x3/411/8l46 LONE STAR MODELS114x8,1iIx3/45/3248 1623 S7fl se LubboCk TX 79412 Cont 48 States Handling Charge $500 pay UPS Add $400 COD $500 extra PP APO FPO accept VISA MC Discover personal checks COD 6/4% tax Texas US currency on/y Mm wood order $1000 L1 11 r21 author Saturn 29T Redesigned 29Ts have fixed stabilizer separate elevator lower price 35% 4% camber practical experience airfoils difference between 3% 4% camber large 35%-camber group Clark Y has thickness FX6O-100 has aft camber E193 same group Both aft camber increased thickness lead lower-speed flightto extent airfoils could almost considered low-speed airfoils present classification leaves E193 moderate-speed group absence modem state-of-the-art airfoil moderate-speed range separating Dale Nutters Super V resting customfit NEST storage/shipping box Strong NESTs protect fragile sailpianes Icare Sailpianes ASW-19 intended slope flying Icare manufactures former Raymond Size Scale kits two extremes seen void available performance spectrum fact coupled design philosophy placed primary emphasis thermal soaring weak conditions led development S9037 9% thick has 35% Dale toting Two-Meter Duck NEST NESTS stocked popular gliders can custom-built See text camber newly-designed S9037 incorporates recent advances understanding low drag/low Reynolds number airfoil aerodynamics made since Soartech number eight Sidelight new S9037 well S9026 59027 designed using computer program PROFOIL formed basis Dr Seligs dissertation research Additional Aerodynamic Features High Performance Besides new airfoils some additional aerodynamic fea tures make Opus 750 top performer Continued page 114 February 1994 87 NEED RIC AccEssoRiEs FLY TO HITEc RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# NILi 6 Buffered Y harness 7354# Li 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Coan 7356# LIJiiz 9 Male Servo Coan 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type orderi ng Part #followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 Smoke/Berman Continued paqe 106 maybe Sukhoi isnt midwing design Sig Manufacturing deserving special kudos Aces collaboration buddy-corded radios set up two nocharge flying lesson sites radio control control line queues both sites mostly young aspirants better perpetuate hobby Sundays final show came off cloudbursts Joe Schumacher now has 111/2 months complete construction dry out otherwise superlative Expo site Also North East Polk County airport have able accept air-traveling Expo visitors year will able more-settled Expo opens its gates again next August third though seventh Without doubt aeromodeling all-encompassing hobbies Its elements include sophisticated aeronautical design handcrafting highest level operating skills application exceeding professionals competition dozen affiliated categories technical involvement mechanical electrical radio devices useful applications non-hobby world Depending far ones interests reach can administrative participation affairs 160000member fraternity scrimmaging flying space under sun prominent hobby has distinguished catalysts such late Carl Goldberg Byron Godbersen such catalyst deserves respect appreciation also pioneering ideas Giant Scale models propulsion understand Byron surely eligible subscriber Modem Maturity has health problems recent years May behalf modelers extend best wishes continued progress toward full recovery oaring/Blakeslee Continued page 87 Fuselage Research full-scale sailplane fuselage design shows proper nose curvature can greatly reduce fuselage drag cruise thermal flight modes same principles applied Opus 750 Substantial nose drop alleviates flow separation leadingedge wing root thermal flight mode Extensive juncture fillets around wing/ body intersection bowing tailboom low cross-sectional area fuselage servos mounted line ensure lowest possible fuselage drag conventional configuration Note nose droop has practical dividend landing nose droop prevents flaps coming direct contact groundworry no about stripping servo gears Tiplets Wingtips Tiplets derivative Schuemann planform incorporated improved handling Tiplets also improve behavior laminar separation bubble Specifically low Reynolds numbers tiplet sweepback case leading edge sweepback trailing edge no sweepback confines large areas laminar separation tip regions preventing laminar separation bubble migrating inboard increasing bubble size over main wing panel Low-loss sharp-edged wingtips employed increase effective span improved launch climb performance over sailplanes conventional rounded tips noticeable Stabilator stabilator planform Opus 750 designed increase effective moment corresponding increase fuselage tail boom length its associated weight nose counterweight effective moment increase achieved employing Continued page 120 FUN WITH FREE FLIGHT SPORT&$1095 SCALEPLANES95 mer made rubber ower FLYING ACES MOTH 24 nch wingspan easily adaptable o smauesectricPRAIRIE BIRD embryo l6inch wingspan$1095 O NITE 28 P-30 28 inch wingspan suitable CO2 walnut scale 17/ inch winsnan SEND FOR OUR FULL CATALOG Uoo 4 DahD*Iakamn PO Box 710399-MA SANTEE CA 92072-0399 i U~WIq-VqyfqqqTEL 619 448-1818FAX 619 448-1833 114 Model Aviation i R/C Flight Simulator IBM PCs & Compatibles Excellent flight equations Superb graphics Several styles aircraft Easily set up fly like bird features aid learning Skylark realistic R/O Helicopter flight simulator available today Call Now 313 662-LARK Airplane version coming soon Box 1063 Lorain Ohio 44055 iUWA Phone 216 282-8354 16 Clip jcraft L L~sqto Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits 002 Rubber Power 22 Span * Tayiorcraft 1095 * Stinson voyager .. 1095 * PC-6 Porter 1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13Span *Cub895 *Stinson 125895 *vagabond895 *Farman895 *Jodel895 *Fike995 1/2 R/O Gas Electric Kits Fits Astro 035 Taylorcratt3995 Stinson 1253995 HARD TO FIND ITEMS Brown CO2 Motors Accessories Over 20 Sizes Rubber Stripl Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 RC SoaringlBlakeslee Continued page 114 sweepback Both leading trailing edges swept back Effectively sweepback moves mean aerodynamic center stabilator back having increase tailboom length Wing Planform Relative other comparable RC sailplanes main wing tiplet panels broaderthat taper gradual Specifically main wing panel 40-inch span tapers 9 75 inches tiplet eight-inch span including 175-inch tips tapers 75 475 inches regard decreased amount taper relative other comparable sailplanes several remarks can made First addition lightweight structure increase wing area leads lighter wing loading improved thermal performance Second aspect ratio decreased however higher wing chords near outer wing leads reduced profile drag offsets increase induced drag owing lower aspect ratio Third broader wing toward tip decreases tendency tip stall Thus believed areas Opus 750 either equal better comparable sailpianes Saturn 29 Layne/Urwyler built flew Saturn 29T last season liked way flew very much 29T 113-inch wingspan slightly smaller lower priced takeoff Layne Urwylers original Saturn 30 Both full house ie use six servos ailerons flaps elevator rudder 118-inch-span Saturn 30 kit comes FG fuse bagged glass/foam wings stab about 98% ARF almost ready fly sells $500 its HQ 25/9 airfoil 30 Saturn outstanding thermal machine See October 1992 column review An important unusual design feature Saturn wing joiner 36-inch length -inch seamless 6061T6 aluminum tube Saturn 30 joiner straight dihedral built outer wing panels 29T has straight wings joiner tube bent middle giving about 30 dihedral per side Since joiner extends well wing takes bending loads allowing wing spar structure lighter normal assembled its strong system doubt theres much chance breaking wing either tow air Saturn 29T has slimmer fuselage 30 uses obechi wood veneer skins foam wing stab cores Plastic tubes wing joiner already installed wing cores theres much work prior skinning Airfoil HQ 20/9 20/8 Flying weight about 70 ounces kit available either standard U-apply skins pre-sheeted flying surfaces 25T 99-inch span version available compete Standard Class Anyway before could report flying 29T Dave Layne wrote say mixed some ideas early Saturn 29T owners some ideas own put together redesigned Saturn 29T lowered price new standard kit price $199 pre-sheeted obechi version $299 same both sizes Add $15 shipping handling major design change going all-flying T-tail bolt-on stab conventional elevator Dave says new configuration provides positive pitch control less elevator servo throw required think good move because will pitch control improved mind bad before eliminating stab rocker allows top fin completely closed making stronger T-tails said efficient like looks control feel have concerned about strength fin stab weight atop fin bad landings can whip tail put lot strain fin As said enjoy flying 29T very 120 Model Aviation Associates Gives Total P11gM Line FREEDOM new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field F battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 much Its thermaling characteristics remind lot Falcon 880 Both handle exceptionally well have no bad habits therefore good choices fliers first six-servo computer-radio model same size weight Falcon has conventional all-flying stabilizers mounted low fin found Saturn 29T outstanding landing department too Its oversize flaps really slow model down can make fairly high landing pattern pull full flaps final rotate nose down about 300 come straight spot sedate controlled speed things considered 29T fine choice both sport competition flying Layne/Urwyler can reached 1808 Applegate Drive Modesto CA 95350 Tel 209 529-8457 Fax 209 549-1642 Saturn 29T kits can also purchased Northeast Sailplane Products Tel 802 658-9482 Slegers International Tel 201 366-0880 ICARE Sailplanes Canada Etienne Dorig Quebec wrote say has taken over former Raymond Size line Scale sailplanes Right now Etienne offering two small Scale models should perfect fun slope although says definitely beginners Other kits will coming along soon Etiennes description first two kits Salto H-101 53-inch span 26 ounces 210square-inch wing area glider designed slope flying will fly very light-to-mediumstrength winds very aerobatic will turn four-point rolls string its thin Goe 795 airfoil can flown very fast Ailerons actuated through cable pushrods can used flaperons two microservos fuselage epoxyfiberglass white gelcoat similar German standard canopy thermoformed clear PVC ARF kit $135 US dollars wings foam presheeted obechi Leading edge tip wing joiner root rib installed whole wing sanded shape Ailerons routed aileron cable pushrod tube installed built-up wing kit $95 ribs precut V-tail made sheet balsa Hardware plans instructions complete kit ASW-19 82-inch span 42 ounces 480square-inch wing area ASW-19 Alexander Schleicher FAI Standard Class sailplane 15 meters wingspan Icares model semiscale although fuselage 100% scale its E 203 airfoil high aspect ratio covers lot ground fully aerobatic has lot energy retention kit comes epoxy-fiberglass fuselage optionally colored white wings made foam presheeted obechi ailerons prerouted aileron push cable tubes installed builder installs leading edges wing joiners Canopy clear plastic canopy tray FG molded Tail surfaces built-up kit comes complete wood hardware CAD building plans instructions Price $130 regular fuselage $145 white fuselage Shipping handling additional information Icare s products send $1 Icare Sailplanes 381 Joseph-Huet Boucherville PQ J4B 2C5 Canada Tel 514 449-9094 NEST Model Boxes need safe way store transport ship pride joy Dale Nutter longtime glider flier has come up practical solution protecting fragile models Dales description NESTs After 20 years contest travel experience have developed perfect travel accessory custom models corrugated plastic box constructed white PackLiteTM heat-resistant waterproof material used US Postal Service others reusable shipping containers has tested ASTM standards displayed compression strength 3700 pounds per square foot Its kidproof FOCKE WULF 190 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE60-90 2-STROKE 90-1 20 4-STROKE WEIGHT9-10 LBS INTRO PRICE$18500 GIANT SCALE Me-109 Made USA SPECIFICATIONS WING SPAN 82 ENGINE SIZE SUPER TIGER 3000 WEIGHT18-20 LBS INCLUDES SCALE COCKPIT KIT INTRO PRICE$35000 P47 THUNDERBOLT Made USA SPECIFICATIONS WING SPAN 60 ENGINE SIZE WEIGHT INTRO PRICE 602-STROKE 8-85 LBS $16000 CESSNA 150 Made USA SPECIFICATIONS WING SPAN 65 ENGINE SIZE WEIGHT INTRO PRICE 45-60 2-STROKE 7-7 5 LBS $16000 ALL KiTS FEATURE HAND LAID FIBERGLASS FUSELAGE PANEL LINES & SCALE DETAILS FOAM CORE WINGS & MACNINE CUT FORMERS & BULKHEADS SEE YOUR LOCAL DEALER OR CALL HOBBY HANGAR 602-283-5746 FOR IMMEDlATE DELl VERY DEALER INQUIRIES WELCOME WE ACCEPT VISA MASTERCARD & DISCOVER CARDS WE GLADLY SHIP COD SHiPPING & HANDL1NG $500 PER KIT CONTINENTAL USA OTHER AREAS CALL KENTUCKY RESID ENTS ADD 6% SALES TAX HOBBY HANGAR IS FULL SERVICE HOBBY SHOP WITH OVER 11000 1TEMS iN STOCK CATALOGS AVAILABLE $400 EACH W/REBATE ON FIRST ORDER HQQAR EXCLUSIVE DISTRIBUTOR ALSO OF FIBER SCALE AVAILABLE MODELS 153 LLOYD AVE FLORENCE KY 41042 P40$16000 606-283-5746 PHONE 606-283-5889 FAX February 1994 121 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $299 Cat No 202 Air Cleaner Fine $299 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $239 Cat No 204 Pk/2 Inserts Fine $239 FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Bru Line Industries Inc po 0ox3786 Center Line Michigan 48015 Add $2 50 sh pp ngM ch gan esidents add 4% sales tax SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AVAILARIF INDIVIDUALLV CUMrLu II EUN AUUbUHI RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 8 COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 114 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT 1/2A TEXACO ENGINES & PARTS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $395 STOCK ORDERS SHIPPED WITHIN 24 HRS Since RC sailpianes often have birds names thought NEST rather box best describes foam-lined container have shipped sailpianes UPS airline baggage great success Only repairable incident occurred Southwest Airlines apparently used two NESTs stop moving 737 Shipments cardboard boxes plywood crates frequently suffer shipping damage NESTs stronger punctureproof NESTs can labeled Marks-a-Lot permanent marker erased isopropyl alcohol 7 x 13 x 52-inch NEST $7995 good Two-Meter Standard gliders fits trunk back seat cars 7 x 13 x 57-inch NEST $8495 made Falcon Legendsized gliders 7 x 15 x 60-inch SuperV NEST 7 x 13 x 62-inch Eagle NEST $8995 NESTs have full depth sides two adjustable nylon closure straps Prices include shipping handling Other sizes can custom-made specifications pricing proportional material requirements ordering NEST recommend also purchase NEST Accessories Kit $1795 includes 1 A blanket Extra full-length /2-inch soft foam insert 2 Two pillows One-inch soft foam end inserts protect wingtips rudders V-tails 3 A perch length A/C compressor insulation tubing Slit slip edge open NEST make soft field stand setting up model NEST can also used hold assembled model off ground safe getting stepped dirt wet grass etc Just position fuse nose down NEST line NEST up wind Contact D&D Specialties 7935 5 New Haven Tulsa OK 74136 Tel 918 492-3760 Fax 918 492-5641 RnR Lowers Prices two Richards Spicer Tiltman report increased volume has lowered manufacturing costs all-molded gliders passing approximately $50 savings per kit along customer popular Genesis reduced $489 $449 plus shipping Compared European-made molded gliders attractive price beautiful-looking 113-inch-span thermal model All-molded construction means surfaces have precolored gloss gelcoat finishes No finishing painting required Basically work need to sand off some flashing cut off flaps cut slot along ailerons self-hinged bottom install control rods servos radio wings stabilizer rudder molded glass carbon fiber Rohacell hollow inside except spars Repair procedures hollow parts course different bagged wood veneer foam wings worst comes worst spare parts can purchased RnR RnRs two heavier F3B-type models Synergy 91 Synergy III have cut $549 $595 respectively say heavier compared Genesis excellent fliers pilots have found both competitive AMA thermal events especially windy-weather areas RnRs cross-country model 143foot-span SB-XC can now obtained four-piece wing original three-piece wing prefer price has dropped $749 four-piece wing boon fliers smaller cars because seven-foot-long fuselage now longest piece threepiece wing nine-foot center section can chore pack Slope racing fans will interested RnRs changes popular Nova new 108/108 version features wing stretched 108 inches using HQ 10/80 airfoil has better all-round performance especially light air information write RnR Products 1120 Wrigley Way Milpitas CA 95035 call 408 946-4751 122 Model Aviation REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII IMMEDIATE SHIPMENT VISA/MC 60 PAGE INSTRUCTION MANUAL ENLARGABLE PLANS & FULL SIZED PART PATTERNS TO BUILD 4 CHANNEL 05 ELECTRIC MOTOR POWERED RC DUCT FAN MIG 15 MODEL 4 SIZES OF FREE FLIGHT MIG 15 DUCT FAN MODELS & RUBBER POWERED FREE FLIGHT MODE Retail price $2400 Shipping handling fee $400 Dealer inquires invited Ferrell Papic 300 W Lincoln #82 Orange Ca 92665 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING BUILD & FLY THE mirtiMAX YoURSELF X r IU- uompuiw erve urana InampIon uiiralightPart 103 UltralightEasy construction 1989 Sun-N-Fun Fly-InWood constructionVideOAvaiIsbIs information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 65-5397 Aerotowing Joe McClure Memphis Tennessee kind enough write interesting report read aerotowing piece July column have admit dont read often am general sport flier mostly power fly am president White Haven R/C Tale Draggers have towing several years have good time fact flying tow plane almost much fun flying glider like tow 60-powered Great Planes Trainer 60 90-powered Big Stick have towed small 25-powered ARF trainer must say real hoot watch little trainer tug Sig Riser 100 500 feet sky have six seven club members have sailpianes releasable hooks located up close nose Some actuated up elevator some have separate servo Gliders range TwoMeter Spirit up Legend towed Hoby Hawk Klingberg Wing use 100 feet string ring end sailplane several number 64 bands tow plane shock absorption just wanted let readers know others doing too Thanks letter Joe appreciated receiving because hadnt heard towing gliders small TwoMeters normally think big Scale gliders discuss twing So its good know least club likes think small Joe didnt cover item thats imperative youre thinking about towing gliders yourself tow plane must fitted servo-actuated towline release device Its quite possible gliders towhook malfunction glider get unusual position imperils tow plane So tug pilot should able unhook towlineand glider cale/Warner Continued page 108 Want build model will confound guys field have never seen anything esoteric P-S iD two one-page three-view drawings 1924 Dietrich-Gobiet flying flivvers superb photographs range framework Kaz Suzukis Japan SR-7 1 rubber-powered ducted-fan model Doug McHard s incredible compressed-air Waterman Aerobile will love slick little book enough buy two use loaner make converts cause Its priced $995 Just getting started FF Scale month get letters guys getting interested what like think hard core hobby FF Scale Great recommend just place get everything need would certainly Peck-Polymers Sandy Peck daughter Vera work hard keep latest stuff need stock beginners books building materials CO2 motors FF Scale plans Zap razor planes cant imagine modeleroriented supplier catalog $4 Peck Polymers PO Box 710399 Santee CA 92072-0399 Rubber Scale kits cost too much recently heard guy complained about rubber kit costing ten bucks talked manufacturer kit found after paying materials plan printing boxing labor health plan employees rent phone electricity advertising office computer expenses machinery print wood etc etc firm making less twenty cents kit sold safe distance stand winding motor equal square knots motor Words wisdom Ken Sykoras 1930s model shop BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane TaIk nc accessory shop Tech Info 714-650-5004 Orders 800-795-5008 Pa Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airboe Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 30 Seconds Strap onto Aircraft Test Flown S mall 35 Size Air p lane We Personalize SOS Ynii NRTIA PW1ntAA Tt BALES ND SERVICE POR EVERYTHING B/C AFT MIDWEST INC. 116 EAST MAIN NORTNVILLB IdICmGAI 48187 313-3480085 FAX 8133484175 RF M*JE 923fl2 72Mhz 923/75 75Mhz 14923153 53Mhz 923/50 50Mhz 14923/27 27Mhz SMALL SIZE X 100 X 100 SHOWS ANTENNAS RFOUTPUT FITS ALL DIAMETER ANTENNAS WORKS WITH AM FM OR PCM SIMPLE SNAP-ON MOUNTING 881993 RELERSEM*TE Servo reversing module fits between Rx Servo Adjusts/sets neutral reverses servo direction Supplied wires add servo leads $1995 SAE foi ER VWE atalog ACE* AIRTRONICS* ARISTO CRAFT CIRRUS EK FUTABA HEATHKIT HITEC* HOBBY SHACK JR* KLINE* KC PROPO* KRAFT* NOVAK PRO LINE RCD* ROYAL TOWEP HOBBIES WORLD ENGINES ETC. * FACTORY TRAiNED ANL UTHORIZED* RCMA #21 February 1994 123 REIJYS QUALITY MODEL PRODUCTS GIANT SCALE SPECIAlISTS Zenoah Quadra Sales Parts -Service 1/4 1/3 scale kits Ercoupe Tomahawk -J3 Kitten Kinner -Taylorcraft Quartermaster 16 Main St Phelps NY 14532 Catalog $100 315-548-3779