NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... REALISTIC wejass Less Halt Oaece.. 5. year Dealer er Add tee Cellar tsr No 3081/8 Scale eSas No 3C7 1/7 Scale s6 NYOkStRSldflO U 315Y~ 3] i [el ORDERS ONLY 1-800-633-7556CODs IN ALABAMA 347-3525 COLLECTWELCOME TOP QUALITY FUEL FOR EXPERT OR BEGINNER NO RE-CLAIMED ALCOHOL O METHANE ONLY IS USED Designed tested give top performance both 2-cycle 4-cycle engines ringed Except engines requiring low lubricant content CONTAINS NEW TRULY SPACE AGE ADDITIVE developed outer space vacuum Thia new additive attaches internal metal parts ot engine will reduce triction much 80% reduces heat wear absolute minimum WE HAVE 3 LUBRICANT BLENDS ALL SYNTHETIC OR SYNTHETIC BLEND CASTOR castor new high purity much cleaner burning castor ALL OUR FUELS CONTAIN ANTI-FOAMERS PREVENTERS WEAR ADDITIVES fuel developed priced individual club direct sales market dealer inquiries invited Order tram en gallon up Mix OK 4 gallon cease up ALL FUEL EXCEPT 54 GALLON DRUMS SHIPPED FREIGHT PRE-PAID Only Centlnentel USA jTo 3 GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF Controller Power save weight ye high effleleney 0061 loss 20 Size 22xt3x63 Add $100 shippiog ColiIooio cosideots add 05% $163 Tao send Cheek money order come wit,ttIHigh Sky Fotahneonneocoe3929 Kansas St #9 San DlegoCA 92104 * FINEST QUALITY MASKING KIT ON THE MARKET * LOWTACK LEAKPROOF ADHESIVE TAPE * EACH KIT CONTAINS * THREE 36 YD ROLLS OF VINYL MASK 2 /e & 72YD ROLLS OF POLY MASK & % * THREE 6OYD ROLLS OF FINE-LINE MASK Ye // * FINE-LINECRISPEDGE CUT STRIPING & DESIGN * CONFORMITY TO ALL MASKING SITUATIONS * FOR USE WITH NITRATE & BUTYRATE DOPES EPOXY PAINT POLY-U AND ENAMEUS MAKE YOUR PAINT JOB COME ALIVE WITH THE BEST MASKING AND FINE-LINE TAPE EVER AVAILABLE TO MODEL BUILDERS L 014 KIT PRICESEND TOSATISFACTION OLIARANTIED $ 2525 OR MO TECHTAPE CMASKJING P0 BOX 230 DEALER INQUIRIES HAND INCLUDED TECHNILOGY LIVINGSTON NJ 07039 WELCOME £1I 209 645 5535 GOLDEN GATE HOBBIES PO BOX 27001 FRESNO CAUFORNIA 93729 M/CVlSA OR COD HA TORI RA DIQICON IMMSK HATORI BLUEPRINT SHOWS ALL EXHAUST ITEMS FULL SIZE 2FT X 4FT $ 5 WE WANT NEW DEALERS ! HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! FOR REAL FUN IN THE SUN TRY STREAM CONVERTIBLE CNVERTS IN LESS THAN 10 JIN ON FLOATS OR WHEELS ITS THE BEST FLYING MODEL OF THE 90S FOE45/8O2Sfl0KE0R80/804STRODENGINES SPAN 51 ARR& 600 SQ IN 1ZNTH 4 TEIGHT 5/7O Ii SO YOU TIIOUGHT IT 1AS JUST FLOATPLANE riinn VISA OR MASTERCARD ACCEPTED S 1IAM INC 81 BLUE CRAB Rb SUiX C NEWPORT S 87-604 DEALER INQUIRIES INVITED December 1990 167 IBIs FAN FUNFLY PILOTS CHOICE AWARDS
Edition: Model Aviation - 1990/12
Page Numbers: 56, 57, 163, 164, 165, 166, 167
NEW Dodgson Designs Saber Any new design Bob Dodgson has got big news us Soaring freaks Bobs latest 121-in-span Saber should avail able about $300 time read ship looks especially exciting because bears family resemblance Bobs existing line contest kits Pixy Camano Lovesong also possesses up-to-date features should make much easier build very com petitive both Thermal dare say Sportsman Multi-Task events hear story straight horses mouth speak heres Bobs unabridged letter describing lat est creation Introducing Saber Bob Dodgson alone belief thermal competition performance Lovesong still unmatched industry ter reigning su preme unchallenged eight years since 1982 form Windsong Lovesong claim further backed up com puter-generated plots derived Princeton wind tunnel test data show Lovesong kit have far best maximum LID lift over dragBR among lowest low est minimum sink rates kit readily avail able US includes latest wave so-called high-tech kit entries have aware some time ever people willing/able vest 75 hours time takes get Mighty Lovesong air Others capable kind craftsmanship demands now evident ever since people ever have transitioning multichannel Soaring quasi-polyhedral transition designs combine multichannel controls poly hedral tips-up tips have given timorous heart training wheels6they have needed der make jump to\ serious straight-wing multichannel ships goal designing Saber make multichannel Glider could match nearly match thermal competition performance Lovesong light lift match nearly match its maximum LID nearly 261 offer bet ter performance top end construct half time tall order fill no has able after eight years try ing airfoil order come close matching minimum sinking speed Lovesong choice airfoils very limited tripped Eppler 214 possibly best airfoil available carrying weight well still offering low est minimum sinking speed possible also among best airfoils comes offering best maximum LID new airfoil however nearly matches minimum sink ing speed tripped E214 offers maxi mum LID thats least goodthe unheralded 5D7037 E214 versatile airfoilit can reflexed offers good speed range 5D7037 offers better performance high-speed end fact 5D7037 offers highspeed performance nearly matches faster sinking airfoils like 53021 designed primarily high-speed performance Surprisingly Princeton tests totally omit ted testing 5D7037 TE camber change opting extensively test poorer per forming 5D7032 computer projections field experience appears Left Lovely Megan Dodgson proudly displays father Bobs latest Saber Right Dodgsons nimble-looking bird spans 121 weighs 70 oz uses new SD7037 airfoil Computer transmmers control four servos wings ailerons flaps plus elevator rudder ThIs ships quick easy build up-to-the-minute features thatii give edge Thermal Sportsman Multi-Task events Left The British contingent poses First F3J Thermal Soaring Convention held Amay Belgium Ships much same seen US Thermal contests Photo Jack Right E-Z LAM epoxy laminating resin now available Aerospace Composite Prod ucts Especially good glass cloth/foam applications product both easy use sand info column 56 Model Aviation Radio Control Soaring Byron Blakeslee 3134 N Winnebago Dr Sedalla CO 80135 two three degrees reflex SD7037 will match high-end performance thicker less versatile 53021 clearly leaves SD7032 dust also appears about two degrees positive camber SD7037 s minimum sinking speed can im proved Therefore seems SD7037 soundly outperforms current darling press S3021 minimum sinking speed maximum L/D can match high-end speed just performance envelope looking fuselage linkages decided save much construction time possible fully formed joined fiberglass fuselage must disadvantage filly formed fiber glass fuselage opposed standard taco shell approach no access fuselage provide pushrod support install complex linkages therefore decided Saber would designed computer radio installation flap aileron servos wings eliminates need linkage access also saves construction time setting up adjusting linkages yet own want own new computer radio like Airtronics Vision recommend Lovesong can still everything mechanically Now still sticky problem sup porting elevator rudder pushrods no access fuselage three conventional choices 1 Use arrow-shaft control rods re quire support work fine weigh almost ounce adding dead tail weight 2 Use flexible cable carbon steel rod sheath also work must secured along fuselage elaborate meansclearly simple solution 3 Use pull/pull cables cord system can work fine requires fiddling hate trust elevator control Saber solved pushrod problem inventing two-in-one system use arrow shaft elevator pushrod rudder pushrod simply old reli able A6-in steel pushrod slips inside ele Continued page 163 Large selection 70-page catalog latest greatest kits Friendly advice before after sale NSP customert Gift certificates holidays NorthEast Sailplane Products 16 KIrby Lane Williston Vermont 05495 602 658-9482 II Paper Flying Scale Model Airplane $8 *1tJ PARTS PRE-CUT & PREPAINTED BUILD & FLY IN TWO HOURS PAPER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA Vol I/Cat *1500 REVISED & EXPANDEDI Contains over 2000 airplanes postage stamp size 6 ft wing span RCl Gliders rubber powered Die-cut you-cut Largest known source paper airplanes woridl Cost catalog deducted 1st order over *2500 ASTOUNDING Vol I/Cat CORSAIR gaper airplane above $1800 plus $250 postage PO Box 16621 Dept R Irvine CA 92714 714 250-1107 FskkRiitCoaiWisd 1/4 Scale Kits $12995 Epoxy/Glass/Foam construction Drawingi Data Formula 120 Pylon Sport Standoff ScaleKit Price ping credit Cards WelcomedOhio Residents Add 7% December 1990 57 Looking RC Sailplane CALL NSP Michael Fonster shows off all-molded fi berglass Yahoo Sailplane F38-lIke intended club-level multitask compe tition CARBON FIBER LAMINATES Aerospace Composite Products offers var ety r g d Ca bon f ber/epoxy sheets add stiffness almost mater al f berg ass foam ba sawood laminates can used reinforce foam wings leading trailing edges wing spars Carbon Fiber bonds easily slow setting cyanoacrylates 5-minute epoxies laminate can stripped narrower widths CL-i 007 thick 1x48-$500 1x72-$700 CL-2 014 thick 1x48-$800 1x72-$1100 Send SASE information additional sizes products Add $300 shipping handling Calif residents add 6% taxLarger sizes Overseas orders add 15%-Order COD oravailableA TyPIcAL INSTALLATION send check money order W r IiIiiFJZMiiJnI1ILiI 5tJIIIII4I source lightweight materials AT LAST An Effective High Tech Engine Cleaner RIC Engines Removes BurnedOn Fuel Residue Encrusted Carbon anteed ONLY $695 Add $200 S res add 725% Sax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 DEALERS INQUIRES WELCOME Does fly bet test SX tracked per fectly first lift off Because used Tech Spe cialties pitch gauge adjusted pitch ramp match instructions SX flew perfectly allowing loops rolls autos first tank initial reaction SX very smooth groovy ship goes exactly put Hovering precise aerobatic moves aggressive positive SX has good disc ri gidity does pitch up buzz thrown around nutshell like As SXs capa bilities think anyone attended Kyosho 30-size meet will attest no heli ma neuver wont Kyosho pilot gave dazz ling aerobatic display stock SX will held back SX guarantee go 30 SX ul timate Concept Well 30-size maybe what take everything learned Concept SX dropped 60 guess ultimate Concept will 60-powered big brother SX Well just have wait see meantime Id like thank folks Great Planes made review possible Theyve done great job supporting heli fliers directly through dealers Tim Lampe has doing super job Con cept 30 Connection newsletter thats sent out warranted Concept owners finally found out what youre supposed cards Anyway send yours will receive Tims newsletter Its full good ideas up dates Concept BCNU RC Soaring/Blakeslee Continued page 57 vator arrow shaft its dowel end plugs Thus elevator arrow shaft provides its own support also supports rudder pushrod eavier two supported /6-in steel pushrods requires no outside support stalls minutes very reliable solid designing fiberglass fuselage shape wanted canopy opening nose ex tremely strong both compression torsion servo tray installation Thus canopy starts quite high fuselage Uti lizes unique curved lip inside canopy open ing provides strength similar what can achieved using solid cone nose no opening canopy carefully fitted molded recess provide smooth airflow As other kits wing saddle por tion fuselage matches wing contour eliminating entire wing-to-fuselage intersec tion its related drag cloth lay-up care fully graduated great strength minimum weight engineered fuselage mainte nance free under consistently hard contest landings has wood wing support molded place Saber fuselage strong pushrod stallation snap fuselage complete ready prime paint Oh yes other kits fuselage wing location designed have flaps fully deployed extend below bottom fuselage simple design necessity has tally eluded recent entries multichannel Glider kit market Other designers must think reasonable require pull up flaps single time before land ing Otherwise youll land flaps instead fuselage causes sorts prob lems may know youve flown half-baked designs wings entire wing can built very quickly using UFO CyA glues dont attack foam five-minute epoxy sheeting transfer tape epoxy UFO really boon foam wing construction Since 5D7037 airfoil very thin 92% thick have employ carbon fiber spar order achieve kind strength wanted have however utilized such way becomes integral part spar easy apply does complicate construc tion significantly provide accurately cut foam cores spar slots precut speed ease construction have eliminated sheeting splicing providing full-size obechi sheeting can applied piece side wing panel sheeting can ap plied either transfer tape method other kits epoxy wings require mess around vacuumbagging other tedious building processes can vacuum-bag want trailing edge straight trouble-free obechi sheeting no further reinforcement required simplifying construction further Low-temperature covering such Black Bar film used cover obechi goes easily covering balsa-sheeted wings put pinholes covering same sheet over balsa sheeting obechi sta ble TE stays truer appears less maintenance necessary covering wing surface comes out truer smoother too Surprisingly finished wing panels servos installed weigh 15 16 oz Saber has total wing area 1030 sq span 121 total flying weight about 70 oz carries 20 oz ballast ease wing planform similar old Maestro Megan Maestro Caliente multichannel Gliders kitted 1970s planform has since become known modified Schuemann planform employed Saber same reason used Megan Caliente get center-of-gravity rearward fuselage minimize amount nose weight required balance plane Schuemann modified Schue mann-winged Gliders have serious tip stall problems require performance-eating tip washout am happy report design Saber eliminates both tip stall tendency need tip washout Saber uses %-in-diameter wing rod provide rigid center section good zoom launching minimum flexing really solid-feeling ship speeds stabs/rudder stab utilizes quick easy foam core construction new 5D8020 airfoil fully sheeted requires no TE rein forcing stabs can built flash lightweight extremely strong flutter free rudder also foam core sheeted A2 balsa Controls Flaps ailerons crow full trailing edge camber both positive negative rudder elevator computer radio required plans show Airtronics Vision radio installation Performance Light-lift low-altitude thermal ing ability similar Lovesong best business maximum LID nearly high Lovesong over 251 compared tips-up gaggle Glid rs max LID about 221 wing camber reflex mode has top end similar faster sinking Gliders using S3021 airfoil short Saber combines unmatched blend minimum sinking speed max L/D highspeed performance rest Highly detailed computer-drawn plans plus complete building instructions covering aspect construction down wing servo mounting electrical wing servo hookup included Also included devises pushrods control horns etc believe will able include fuselage-to wing four-pin plug wiring make up wing servo extensions Without doubt com pared what included other kits what getting end product Saber real value Just going specs appearance looks ol Bob has come up another win ner Saber beautifully proportioned nice handy size has modem features should put winners circle long time Its wing area 45 fewer squares Lovesong has 132-in span Aspect ra tio 142 compared 167 Song 70 oz wing loading 98 oz/sq ft Adding 20 ounces suggested Bob will bring up 126 oz/sq ft $300 kit price need computer radio will course limit market ship Serious Soaring set seeking infamous competitive edge Saber bears definite consideration Actually kit price $70 Lovesong Saber should build twice fast Windsong makes money well spent far Im concerned Im fast builder two Windsongs built must have taken three times longer 75 hours Bob mentioned Its worth though because Song very tough beat Thermal Duration events December 1990 163 y-1HIn~ 1I Use CA Adhesives Hinges full 15 Mils thick 4 mu Ihicker clher Ieadin brands * Better CA Penetration * Added Strength * Extra Long Life , - S HOBBY HINGES P0 BOX 31064-M Billings MT 59107 Dealer Inquiries Invitedl However have gut feeling Saber will turn Out fun Glider fly just looks sporty Youll always better plane enjoy flying practicing Contact Bob Dodgson Designs 21230 Damson Road Bothell WA 98021 tel 1-206/776-8067 Send two stamps brochure SD7037 per Selig Donovan Fraser save having pull out Soartech #8 read Airfoils Low Speeds what authors said about new 5D7037 5D7037 thinner decambered SD7032 As would expected drag low er polar shifted downward lift lift range less increase lift range flaps would useful relatively low drag C1 near 03 offers good L/D performance together low drag high lift should make SD7037 pop ular airfoil especially Thermal Duration fly ing weak thermal conditions common East Coast Soaring US 5D7037 would make excellent cross-country airfoil flaps case almost essential im prove high-speed between-thermal performance As 5D7032 trips little benefit Yahoo Michael Forester designed model couple years ago member South Bay club California has now moved Salt Lake City Mike says though its F3B type ship designed club-style multitask events actual F3B competition However model too heavy Sportsman Multi-Task class flying Ya hoo has 114-in span weighs 96 oz has 145-oz/sq-ft wing loading Whats unique about ship its all-molded fiberglass construction top bot tom pieces wings made molds joined together other US-made Sailplane constructed way Rich Spicers Synergy III Mike friend Mark Allen designer now well known Falcon 880 em ployed design rules similar used Mark Falcon Mike said indepen dently came select same S3021/S3014 root/tip combination airfoils Mark uses Falcon two similarly sized Gliders Yahoo quite bit heavier has T tail fixed stab elevator Mike flew Yahoo Denver club F3B contests everyone impressed its high-quality construction nice flying characteristics extremely pretty rugged ship should lot fun fly interested having Yahoo Mike prepared make copies about $650 What get professionally built completely finished airplane except installation pushrods radio Contact Mike 11165 Yar row Highland UT 84003 tel 1-801/756-7763 First F3J Thermal Soaring Convention billing F3J contest held Amay Belgium late June As probably know F3J provisional event FAI Ther mal Duration competition F3B being estab lished event Multi-Task Soaring number international contests must held before FAI will accept F3J official event provisional event uses Percentage Slot rules developed BARCS British Association RC Soarers equivalent NSS over years Percentage Slot features six eight LANDER INDUST 1005 19TH ST CTVISA HAVRE MONTANA 59501 406265-6529 BUILDING BOARD 24 x 48 5 mci rt 30 x 48 5 mci Frt 24 x 66 5 mci FrI 24 x 72 5 net FrI CANADIAN ORDERS ADD 25% Build straight spending fortune durable high density 1/2' pin surface bonded 3/4' heavy warp tree base straight true work surface will last years years pilots flying against other 10-minute time period called slot flier longest flight plus landing points slot gets 1000 points others receive percentage slot winners 1000 points based rel ative flight times thing about F3J thats bound cause concern country hand towing allowed confess have zero experience hand towing Im told really isnt bad sounds Well seet Jack Sue 27-year USAF veteran de cided stay Suffolk England took retirement very active British Soaring fact met because Jack recently replaced Bernard Henwood editor fine BARCS journal Soarer Jack attended Amay contest report fantastic time Belgium flying against seven other countries went BARCS member flew US team Bel gians excellent hosts clubhouse photos mementoseven flag Sacramento Belgians bit differ ent running comp provided flags nations competing wore comp numbers F3B English team 17-strong far biggest team 63 entrants Everyone impressed Czechs models have strong F3B influence opposed big poly ships common Britain mod els off-the-shelf types Sagitta Bird Time Cumic Pantera some very nice own-design ships too Saturday thermal breezes nightmare tow persons some really great thermaling seen Conditions changed Saturdays hot humid wind164 Model Aviation 0I monthly publication covering International RC Soaring Scene USA $19 yr $261yr 1st Class Canadsillsxlco $261yr US funds Asia & PaclIc $421yr US funds Europe & UK $361yr US funds Surface Ihi Fomlgn $221yr US funds R/C SOARING DIGEST PO Box 6660 Concord CA 94524 r Plot Accurate Wing Sections Laserwriter Input table data Templates supplied several popular sections Requires knowledge EXCEL EXCEL v22 Macintosh Laserwriter diskette & 16 page manual send $1500 $1609 Cal John MacDougall 110 North Gordon Way Los Altos CA 94022 or info send SASE TRANSMrrrER CASES $2995 plus $300 S&H Great protection affordable pricel Fits 2 transminers wlcharging units High impact luggage grade materials engineered resist dast & moisture e pieces protective foam can removed cat hold variety items Built lockable handles 18 5 12 5 Direct sales t Christmas gift ideell Florlo Flyer Corporation 837 Johnaonburg Rd Sn Marys PA 16857 18141834-2586 VISA MC Accept ae add 5% sales tax NGGNC WOODVILLE OHIO 43409 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS 13 KITS AND 85 PLANS SEND $150 FOR COMPLETE CATALOG LATEST 1/24 SCALE SliCK MODEL KITS NOW AVAJLABLE WITH DECALS PRINP#OOD CANOPIES ErC FROM THE BOOK #11 GRUMMAN F4F WILDCAT 19 KIT #12 GRUMMAN F6F HELLCAT 20 KIT #13 VOUGHT F4U CORSAIR $20 PLUS S250 SHIPPING EACH KIT Jet U Lighteat PILOT BUST has Modern Jet Helmet Face Mask Oxygen ... 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GalITo 23 GaljTO 63 GalITo 127 GalI Up jFreight collect 1 Gal I4Gal24 Gal /64 Gal J128 Gal al Drum 50/c10950700 .55057518500 121/cO/o .14g5.95090085077528000 25/o .14501400 1350127547500 50/o .2895 .2250 2200.2150 78000 Manufactured MACH-7 PO Box 1201 Enterprise Alabama 36330 less conditions Sundays windy 35-plus mphgood hear about international camaraderie inhigh-strength gloss finish sands easily weather severe thunderstorms wereour great sport Jack also sent along short trea-ideal use 58-oz fiberglass cloth over conditions understanding thetise hand towing Ill print upcomingbalsa-sheeted foam wings use 2-oz Brits came own launch savecolumn because well need learn ropes Itglass cloth over bare molded Styrofoam bagged wings hang wind What liftappears certainty F3J will sup-wings E-Z LAM may thinned 99% isowe overshadowed some mostported enough countries make officialpropyl alcohol applications lower viapowerful sinl have ever seen Well after someFAI World Championship event couple ofcosity desired changeable trying conditions oneyears Whos ready start practicing make could imagine Brits took six 12 flyofffirst US F3J team quote marks above indicate simply places followed two Dutch three Czechscopied Aerospaces news release about E-Z LAM German German name MarkusE-Z LAM Heres recently introduced offeringHow does stuff really work Joe Wurts says Koepe wonfrom Aerospace Composites manufacturerits best epoxy resin hes used Joe builds final analysis superb competi-claims E-Z LAM first epoxy laminat-about planes Boeing what says tion lots information generously ex-ing resin specially formulated modelis like word God What works Joe changed Unbeatable hospitality some theaircraft use two-part 21 mix resin andgood enough toughest weather have seen Above thehardener specially blended use light- 1 -pint E-Z LAM kit $18 1-quart kit spirit cooperation friendliness thereweight fiberglass carbon fiber Kevlar clothis $26 Call write Aerospace Composite ProdIts low viscosity allows flow easily ucts PO Box 16621 Irvine CA 92714 Thanks Jack excellent report Always weave cloth E-Z LAM cures hard company can reached 1-714/250-1107 SCRATCHBUILD 14 SCALE PLANS 6PS efleetc pj5 CESSNA AG WAGON 123-5 4 CESSNA U206TU206 107-52 5 CESSNA 152 AEROBAT 99-5 3 PIPER PAWNEEios$ 4 TRANSA VIA AIRTRUK 117-5 5 EDO FLOATS[v32]T5a 2 EDO AMPHIB FLOATS i 40Z Surface Mail P & P VISA & MASTERCARD Welcome SEaS INS5 aS iSR CSMPEETE LiSTiNG SF ALL PLASS eaSes PASSSCTS SERVICES FREE WiTH SiL SR5RR5 cS6OOO S65-OC s55-oo s60-oo r565-OC S39-OC S49-OO PRODUCTS i-Mg flICEERMIUH2 Mf5flEI PU Complete Line Exhaust Systems Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter Ball Mufflers Specialized Exhaust Systems UnhurpeS old timer perfectly proportioned modeling Curtiss Robin 049 Engines -Channel RIC 41 Wingspan Electric Power Optional 811*5 TI 003 Very Few iou scaie aircraft en idealiy nailed Ic mSdei flight appeallag aid curtias Rabie hors iii spruce man age baaluixiiy propertisned br rubber Cieclric giSw engisen Cany acid ian baud traiseriihe perlormance Flyiise MSdeis cataioe hOt PVons 7031 273w93 INE MODELS INC PO Box 2136 Falrtex VirgInia 22031 USA December 1990 165 NEW ZEALAND AERO PRODUCTS 34 WARE PARASE STiRLiNS P5011 BLSFF SEW ZEALANS TAPE PROUDLY PRESENTS c7VIASICING 0711A STEJiJ info Thermal Hunting Part Two Bob Mc Gowan Part Bobs article appeared September column following sec ond half piece originally appeared Diablo Valley SS newsletter edited Greg Vasgerdsian Thermal Hunting Part described look Now lets make kill Recognizing lift hit takes trained eye need observe attitude change watching plane relationship ground also need observe subtle changes way plane flying lift may cause plane change its apparent speed pitch attitude control responsiveness could say plane becomes alive Practice learn particular plane will act lift Stand still focus attention watch lift Once its located can relax As youre searching lift raises just wings can conclude center thermal side flight path gin thermal turn side always turn same direction break habit plane rises evenly encounter lift flying straight center thermal Keep going long lift getting stronger soon intensity peaks starts back down begin thermal turn Start grabbing altitude right away dont thing might cause lose contact thermal circling take note lift strongest move circle way flying straight little resuming turn rising equally throughout circle have thermal centered Its usually best change turning direction after youve started circling unless need major recenter ing liftor avoid potential midalr Keeping steep bank angle will help prevent get ting tossed out strong violent thermal weak thermal will require very gentle flying shallow bank angle Stay loose let Sailplane drift lift Concentrate flying nlce evenly banked constant-alrspeed circle dont worry about drifting ground cir cle may appear drift wind go As climb higher try widenlng circle lessenlng bank angle will find point rate climb will optimized particular thermal Constantly watch ing climb rate around circle re center thermal necessary make climb rate should ride lift Sailplanes minimum sink speed use some up trim periodically pull little up stick keep speed just right polyhedral ship use rudder keep constant bank angle have ailerons try use hold undercamber inside slower wing reflex outside wing Falcon 800 Falcon 880 groove nicely some planes need some opposite rudder keep nose turned circle cross controlling have flaps can put little undercamber will slow sink rate allowing slower tighter turns Airtronlcs Vision ra dio can mix little undercamber give up elevator works well strong small ther mals youre steeply banked may encounter thermal its develop ing stage low altitude air will feel unsta ble plane will giving signs lift will still Coming down slowly can hang out long enough thermal will break loose take up Just need learn stick around also need learn leave Its easy find yourself low circling sink because didnt notice thermal die As soon stop climbing quick search immediate area cant relocate lift move still have altitude flying downwind side field try make possible centering errors downwind side thermal way miss lose lift will way back upwind Dont afraid keep drifting down wind weak thermal will almost al ways grow boomers daring enough stay Ive drifted far dare get speed up still lift exit IIII1FOAMAIREEl 10 SPAN 30-33 LBSPOWER 74 IN WING SPAN 6-7 LBS 45-60 POWER10 SPAN 1935-42 CC POWER 5-10 LB PAYLOAD OPTIONAL SPREADER4 CH PLY FOAM AND BALSA WOODCHOOSE 30k i UM SLOW AND STABLE KIT $26995 SPDKIT$1995KIT $69953 CH $14995 4 CH $16495 SEND $100 FOR CATALOGRT 1 NEODESHA KS 66757 OF SAC KITS AND ACC ..JIIv 325-2821 FREE SHIPPING ON KIT ORDERS~pIwi Company ISA TERCARD 166 Model Aviation Electric Flight off Controller Perfect 05 Motors 510 cells month Han Brake Lightweight 12 00money back Adjustable switching pointguarantee terminal ror easy hsokop $2495 ON/OFF 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HATORI 650 LONG PIPE $4350 TO DEALERS CATALOG $ 200 OR FREE WITH ORDERS thermal cruising speed head straight back field Sometimes will encounter thermal doesnt seem follow rules Wind shears version layers turbulence affect ther mals once saw dust devil thermal went straight up made sharp 9fl0 turn horizontally make another sharp 900 turn go straight up again could ride something like Watch soaring birds circle Sometimes will appear centered climbing nicely will move over 50 yards go up better will fly straight away climbing way know watching can learn lot defi nitely masters amateurs need thank guys like Bob Fred Weaver giving us secrets Well maybe definitely speeds up learning process have better idea what look steer Glider around THE 23rd ANNUAL THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PR ES ENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION TAN6EIUNE ALE SPORTSMAN EXPERT GIANT FUN SCALE RACING FORMULA 1/4 MIDGET SPORT PYLON EAIIBN NOVICE SPORTSMAN ADVANCED ESPERT TURNAROUND MASTERS FAI F3A UELUQEaR ILLELX NOVICEAWARDS FOR BEST INTERMEDIATE TS BEST FAI IGHT SCALE LIII j FT R 6IFCFMRSR RANYM TTFRS I MIJ T HAVE URRENT K ES NO I~ONE sky want warn about relaxing find thermal Maybe its OK Cali fornia seems time find ther mal relax next thing know Glider falling like stone Im wondering darned thermal went prove Bob knows what hes talking about season has won both NSS Mas ters contest big Western States contest Modesto Falcons Bob says Fal con 800 100-in span flies just well 112in-span Falcon 880 easier land Accord ing Bob California pilots get time always comes down hitting spot consistently Practice practicethats secret RC Scale/Foley Continued page 59 working very fast result well SATURDAYSUNDAYMONDAY SITEDEC 22ndDEC 234DEC 2415 CPATIERNPATlERNPATTERN AALLALLALL Li CLASSES CLASSES CLASSES THURSDAYFRIDAYSATURDAYSUNDAYMONDAYTUESDAY SITEDEC 2715DEC IRISDEC29 IhDEC 3511DEC 311JAN 191 B1/4 MIDGET SCALE CF AORMULA IRACINGSPORTSTATICSCALESCALE RACINGPYLONJUDGING CNIGHT FLY JETSjETS F HELICOPTER SCHEDULE NOT VET DETERMINED CONTACT CLIFF HIATT FOR INFO 14076565553 II worth effort As far type glue use RC-56 thinned slightly water works best Im also experi menting new similar glue soon mar keted Sig Manufacturing Co Inc Watch released soon Once have rivets applied clean model thoroughly remove china marker lines fingerprints etc may sitting looking thinking worth extra work Believe paint applied detail brought out rubbing steel wool wont able believe did will cover proper painting weathering techniques emphasize detail future column Now time plan next seasons travel schedule missed first two Top Gun Invitational Scale meets shame con test has quickly joined Nats Scalemasters Continued page 171 THE SCHNEIDER SPORTNO THE CbASS OF THE CbASS ! 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