NATIONAL Scale Fun-Fly Wil Byers wrote say planning first Scale Sailplane Slope Fun-Fly US coming along nicely dates May 27-29 1988 site near Richland southeast part state Washington Additional details De cember 1987 column definite upswing interest Scale Sailplanes more fliers finding flying big beauties good slope ultimate thrill Fun-Fly will just advertisedno competition Therell just good flying great site good conversa tion old new flying buddies op portunity see Scale ships up close air As bonus will quite few very good raffle prizes Circus Hobbies has donated two JR PCM radios Other sponsors include Wilshire Model Center Viking Models USA Beemer RC Satellite City Model Builder magazine information event can obtained sending SASE Wil Byers 632 Meadows Dr E Richland WA 99352 Wil also said letter am enclosing some pictures Scale Gliders owned Peter Bechtel took Peters home Coeur dAlene ID gor geous say least built semicompleted kits appear readily available easy build 14-scale Ka-6 Speed Astir LS-4 DG-300 Peter bought except DG-300 Wil shire Model Center DG Multiplex kit came Bob Boomer Beemer RC West Also working Salto 14-scale Jerry Slates Viking Models fiberglass fu selage very high quality impressed have also purchased price opinion really quite good $97 fu selage canopy canopy frame plans ship ping Additionally Peter planning buying Hans Muller ASW 22 sports 21-ft span cant wait see ship slope 1988 Canadian Nats Jack Nunn Central Ontario Glider Group COGG wrote tell us Canadian Nats will held Brantford near Hamilton Ontario about 70 miles straight west Niagara Falls dates Au gust 6-8 Jack will CD promises will biggest best Soaring contest ever held Canada Note dates week end following AMA Nats July 23-31 avid Sailplaner could take couple weeks va cation hit two Nats trip SASE Jack Nunn RR 1 Midhurst Ontario LOL iXO Canada will get information Top man 1987 Canadian Nats Leon Kin caid sent photo Florida flying buddy Nelson Montgomery Palm Beach Gardens Nelson flew three classes 87 Canadian Nats took first Two-Meter second Un limited third Standard no overall trophy Nelson would have won Nelsons Two-Meter ship Scooter Unlimited entry Free Spirit Standard-class ship s Sagitta Leon special interest Scooter 10-fl-span Free Spirit because designer both have both appeared magazine construction articles recent being Scooter October 1983 issue Model Avia tion full-size plan No 422 thought Leons let ter about Nelson timely since shows Americans welcome Canadian Nats allowed win letter Terry Edmonds Terry mem ber Eastern Iowa Soaring Society EISS top fliers country won initial Lee Renaud Memorial Trophy Westover Nats 1985 time Terry tells us about Cross-Country Soaring EISS runs relatively large number SoarA gaggle Peter Bechtels 1/4-scale Salipianes L rest lawn home Coeur dAlene ID Front-to-Back Ka-6 Speed Astir LS-4 00-300 beautiful Ka-6 R purchased Wilshire Model Center Los Angeles Peter will flying planes inaugural National Scale Fun Fly end May details column Photos Wil Byers 44 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N Winnebago Dr Sedaila, CO 80135 Nelson Montgomery home Palm Beach FL three planes did very well 87 Canadian Nats Leon Kincaid gives details column well-equipped Cross Country team Terry Edmonds pilot Mark Anderson tends Thermic Sniffler Ryan Cone Anderson seated spotters Lee Nel son driver No dont stand up pickup motion Cover textbook Sailplane design written Dr Ferdi Gale Order copies di rectly him details column ing meets season doing club some times experiments modifications rules intent increasing participation previous three years X-C meet no team completed 22-mile course decided try make event race past rules blend AMA FAI provi sional rules intent establish course length weather conditions day majority teams could complete thus determining winners time rather distance Different course lengths used two days meet scores normalized per day using FM X-C Racing rules formula secondary reason modification rules encourage flying less-than-ideal weather conditions Usually two-day meet day much better other results teams doing much flying poorer day especially bad day second Well seemed plan stirred up controversies before contest received comments both pro con well-known fliers about later First Ill tell what happened five teams seasoned fliers first day signs good X-C day set course 12 miles seemed like relatively short course thought teams would complete least once Wrong Good lift never developed no teams completed point determined set course short enough second day ensure substantial completion race time sec ond day weather low overcast 15-20 mph winds forecast 25-30 mph winds up wind first leg course set course 24 miles Wrong again Never trust weather man afternoon brought lower winds clearing skies good lift result dash best-laid plans Another modification rules start stop times attempt stan/finish line per se watch started chase vehicle began move done Great Race Thus Sailplane could part way down course before time started Continued page 168 4 4 4 4 4 4 4 SCALE WH RADIO CONTROL ROL-UNE 0 VINTAGE 33/4 5 ES/a sizes 4 114 GOLDEN AGE sizes21/2 31/a 133/4 11/443/i 1145 P4514 EELS FREE-FLIGHT NEW BALLOON 2/4/z 314514 3 SCALE PILOTS NDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS [IfLOzA1SSend $3 fully illustrated catalog ot end other kits end accessories DEPT MA 161 PAWNEE ST SAN MARCOS CA 92069 February 1988 45 r NO MORE KICKBACKS THROWN PROPS moss popular bes se ng add gn ton system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 & 4 stroke both single & twin cylinders 4strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-hock throwing props Absolutely no predetonotion deoth 4-stroke engines Much lower priced fuel no rusty beerings commerciol fuel ovailoble Red-Mox Very low 900-1000 rmp relieble idle end easy hand starts con control ignition timing will stop pro-detonation engine will run mudi cooler develop moro power Now available coaletely shielded spark plug bed mad 90 plug cover Chosen TAG Mfg & Byron Originals foi its outateading reliability Send $100 price list newsletter ordering Box 1732 Riverton WY 82501 307 8576897 CH Electronics Inc PlC Video Tape Vol 1 Basics 115 minutes total running time great educattorial value recommended clubs hobbj shop ozuners. Model AviatIon Nov 1987 Only $1795 tax & shipping mci VISA M/C orders call 415 967-5134 Penn International Chemicals 943 Steirlin Rd Mt View CA 3 yr- - SMOOTH CONTOUR 1314 P43 1hz41/z 214514 WRAM SHOW88 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other eshibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swsp Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peekskill NY 10566 day Ticket Two day Ticket under 12 yrs day 4 ElF STATIC COMPETITION AIR models must operable RC controlled Trophies andlor prizes awarded VcRs awarded two categories Best-in-Show flying Best-inShow non-flying Top line Rc Systems 1st place category Trophies other winners wwi SCALE RC POATS FAST awi IMilSaIRI IMilItarRi POST SAwi SCALE RC BOATS Ison-elItarAl INon-MilitarAl PATTERN RACdRS R/ C OSATS SlANT SCAlE STANS-AFE SCALE ALS TIMERS RC CARS 1/12 scar JUN SR ESENTS RC CARS 1/10 scale SPORT RC CARS 110 scale SLIcERS anT atarI IIELCSPTERS tEST-INSRSW brtes mM imtO sue u space aaallabIty obtain pre-registration Static competi tion forms write include self-addressed stamped envelope Allen -Reinhardt 2 Douglas Drive Pleasanfville NY 10570 Judging takes place Sunday afternoon Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-up models Registration models will start 530 am morning SWAP SHOP WRAMs Swap Shop has become major show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregist rat ion forms receive forms send self-addressed stamped envelope John Isbisfer 4 Devon Rd Larchmont NY 10538 SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further jntormat/on write enclose self-addressed stamped envelope call Jerry Judge Nancy Road Brewster NY 10509 914-279-2727 WESTCHESTER RADIO AEROMODELERS INC 21/2D 10 AM 6 PM DIRECTIONS Are Eavlters eavawab Iucaeea Iv sausbeen wesrcresre Avunty alveg eastern yr Nartbbbufld side Sna Tar4 Slase TbasaE il-uni no baurt bail 4 Snevae aad ea 3rd ruStic Iurct Turv left lacer Tbrawavl taunece perk na area PROM THE ROSin 101 CanS Cdt 2 As let eruttia laSt sure rtgbt veneer eatalng assa number P-5 So fact both winning Scale Masters versions stopped moment approached really speaks quality Both Charlie Chambers P-s 1 Piper Cub Glen Roberts built indubitably among favorites championships once again models deserved plauditsand flier trophy op timism esprit de corps RC Soaring/Blakeslee Continued page 45 watch stopped plane touched down designated area field intent avoid timer judgment plane crossed line keep chase vehicles off road until ready roll definitely mis take short course tempted drivers push speed limit chasing fast-moving Sail plane start attempt What did contestants think modi fied rules after flying As things some liked some didnt contest seemed raise basic question about goal X-C generally called racing yet contests distance affair AMA rules encourage setting long courses lessens possibility outcome will de termined speed Perhaps term Racing should deleted rule book concept variable-length course has some merit used both FM rules fullscale Soaring events allows task closely match weather conditions Some points learned contest should consid ered 1 Some method keeping chase vehicles within speed limits paramount importance problem short courses can also problem X-C course 2 Use race start per current AMA rules Having chase vehicle ahead start line lessens initial motoring speeds 3 Make course long enough multi ple thermals required complete several reasons first discourage use Speed-type airplanes compound problem number above second lessen traffic first couple miles course third maintain Thermal-type concept versus all-out speed dash Please understand neither EISS nor self promoting rules changes event run experiment reported manner fliers interested X-C could evaluate what happened new book Dr Ferdinand Gale Dr Gale has flying models since 1934 retired aeromechanical engineer new book Aerody namic Design Radioguided Sailpianes like textbook Sailplaners anything Ive seen extremely comprehensive pretty much explains everything ever wanted know about designing Sailplanes list chapters 1 Elementary Aerodynamics 2 Airfoil 3 Wing 4 Fuselage 5 Empennages 6 Complete Sailplane 7 Longitudinal Static Sta bility 8 Lateral Static Stability 9 Maneuverabil ity 10 Tailless 11 Canard 12 Construction 13 Examples Problems 14 Problem Solu tiOns 15 Math Physics Refresher cover letter Dr Gale Ferdi prefers called gave good explanation book first glance book appears compli cated really follows sug gestion given Preface reading text very first page book written nontechnical modelers am sure will confused go through chapters order doing realizes wealth information usually spread dozens books Included 300 airfoils types flying modelsnot Sallplanes Along correct theoretical fundamentals might appeal mathematically clined designers like understand real reasons what happens Gliders can find lot data graphs practical design applications will help aeromodelers like design models scratch Ferdis book softcover printed both English Italianwith English left side page Italian right Its kind fun glance over Italian see express things Ferdi says American modelers can obtain book directly him sending $48 surface mall four six weeks $53 alr mail Personal checks international money orders welcome ad dress Dr Ferdinand Gale Via Marconi 10 28042 Baveno No Italy As PS Ferdis 1978 book Soarers still available him gives three-views dimen sions performance data 24 full-size Sailplanes extjnt time covers ships remain Scale favorites such Libelle Kestrel 17 ASW 19 21 ASK 21 Janus Nimbus 2 Cirrus 75 SB 10 Jantar HP-18 still valuable book Scale fana tics price $30 plus additional $5 air mail postage 1988 Nats news friend Flying Models magazine Soaring editor Herk Stokely sent letter some good info Soaring 88 Natsso thought youd like see end September first orga nizing meeting 1988 AMA Nats will held right Tidewater during last week July Needless say club will heavily involved management Soaring events fact appears will Event Director Soaring competition Well holding huge farm field about 10 miles Nats operations center Fentress Field field will probably shared Free Flight competition will mean well need lots room parking expecting about 125 Soaring pilots generating nearly 300 en tries due entering multiple events will four days flying Tuesday through Fri day awards banquet Friday evening Hope meet people Ive heard corresponded past come bring mosquito repellent has talk holding 89 Soaring 168 Model Aviation No 578 Schweizer 1-26B $1475 RC Quarter-Scale Sailplane spans 125 Two plan sheets No 579 Lockheed P-38 $1800 CL Precision Scale WW II fighter uses twin 45s spans 55 has operating Fowler flaps retracts throttle Three plan sheets No 580 Parnall Pixie FF Rubber Scale British biplane 112 scale spans 31V2 0 03 0 N N 0 Eo -5 e U zo e 00 o 0 tile 0 0 nil 0 2 3 C50 Ctsil 0 V sI C0 &. z0 Osil CIa U 00 l I 0r. a I STREET uv C 0 Stiletto CL Stont model McDonald winner 1976 1980 1982 FAI World Champs$375 Blue Birds RC Ken Willards formation plane 4-channel 10115 power$375 Crashmester CL Crash-proof trainer twa sizes15/30 35/40 power$125 1930 Fleet Biplane RC Sport Scale tar 35/40 4-channel Wingspan 56 /s Scale Two sheets$625 Drake II AC Ken Willards flying beat tar 3-channel 1 5-power Fly land removable gear$375 Taylor Cub RC Don Srslls Schoelyard-Scale tor 049s 2-3 channel Spans 50 in$350 Zephyr AC Small 2-channel glider tsr hand-launch tow thermal sinpe soaring$2130 Laser 200 RC Sport Scale replica championship Aerobatic tIler Uses 40 power 4-5 channel Two sheets$1075 ElectrIc Sparky AC Electric fun flier 05 motor 3-channel RC scaled-op 1930 mbber-pewer favorite$050 Cavalier AC Old-Timer-like new design has huge wing tar slow easy flights 35 pwr 3 ch Two sheets$1725 1/2A Miss America AC Old-Timer Texaco model 049 glow 2-channels$650 Sweet P30 FF Neat stick-and-tissue Outdoor Robber P-30-ciaao model contest-winner$200 Spectra AC Electric-power tor 05-size motor uses 3 different wings tar sport soaring aembaticsS700 440 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$650 Blue Max II AC Fun-fly sportoter 40-size engines spans 52 Lightweight structure$790 Buttercup AC Cute elfin oportoter sues micro 2-ch AC poise-rudder Spans 27 in. tor 020/035 puwer$300 Weekender AC Low-wing sport tIler 20-sine 4-stroke engine spans 47 in5575 4-60 AC Dec Mathews great sport flier 00-size tour-stroker engine spans 70 Two sheets$1275 Playmate AC Sport fter 3 AC channels 15/25-size engines spans 50 in5650 Extra 230 AC Giant Scale acrobatic plane spans 0 ft uses Doadra engine Twe plan sheets$1650 Henry T AC Spertoner 2-3 channel AC spans 52 has adjustable wing ifapsS475 Comet Jr Clipper Plus 35% AC Old-Timer sportater tar engine 2-ch AC spans 40 in$650 Sorts Pitts AC Reminder-scale bipe 40/60 engines spans 43 two plan sheets$1050 NI-Tech 2002 AC Canard docted-fan tar 45 engines spans 30 Two sheets$1000 Swetlow AC Lightweight hotriogger 40-size tour-stroke engines spans 50 In8025 Terrible Coupe FF Itubber-poweruri Coupe dAiver spans 45 contest-winner$475 Cessna C-37 AC Schoolyard Scale famous 304 plane fur 040/10 power 2-oh spans 42 in$500 1938 Challenger AC /sA Texaco Old-Timer spans 47 tar 040 engine 2-channel AC$550 Atrix AC AMA Class 0 Sailplane spans 110 uses 4-channel AC systemS725 Simitar Slow-MotIon 15 AC Tailless flying wing fur 15 engines spans 60 uses 3-ch AC$350 Parakeet AC Sport biplane fur 15/25 engines 3-channel AC equipment spans 42 in$675 Heron AC Sill Winters spurt Electric tar gearud 075 motor 3 AC ch spans 65 in$575 Midget Mustang AC Sport Scale 40/46 tour-stroke engine spans 54 in$000 Cricket AC Sport scalelike 20-also two- four-stroke engine spans 40 in$675 Eaglet Il/Scresmin Eagles II AC Estra wing other parts conoert Goldberg Eaglet ke biplane5250 Skinny MInnie FF Indoor ROD Stick robber-power plane spans l6/e in$175 BC Airfolter FF Replica sf1046 deSuh Gas plane uses CO2 power spans 22 in$200 Super Doubler AC Sport AerobaticyPylon fur 40146 tour-stroke engine spans 57 in$575 Double Duty AC Basic/advanced trainer 10/15 engines spans either 67 59 iv Two plan sheets$1075 Avro Lancaster FF Rubber Scale bus 4 motors spans 51 Fabulous$650 Wildcat CL Sport prutile 35 engines spans 44 Foam wing$500 Sugar Pup AC Spurtoter tot 10/25 engine Foam wing spans 40 in$550 Low Voltsge AC Electric-power sportoter 035 motor spans 44 inS475 Fierce Arrow 66 CL Delta-wing StonIer 45 power spans 60 has 1200 sq areal Two sheets$1275 Wild Hare AC Tn-motor sportoter spans 63 uses 25 engines Two plan sheets$000 XB-35 CL Reminder-scale flying wing bomber tur two engines spans 47 in$575 AC AMA Class 8 2-Meter Sailplane has 70a/ein.5pan foam wing$725 ThunderbIrd 60 CL Big competition Stunter Tom Dixon fur 45161 engines sparu 61 in$000 Sea Loon AC Pod-and-boom seaplane fur 15 power spans 40 in$675 Ex-Cels 520 FF Campenilion plane spans 65 uses 325/34cc power carbun-hber construction$675 Junkera Ju 6435 Would-Be Scale WIN Il-era fighter spans 47 uses twin hA engines$375 Avro 560 FF Mini-electric Scale 23 Brdish ultralight spans 30 in$200 Electroatmak AC Electric aerobatic plane spans 44 uses 05 motor$550 Busy Bee FF Fee Wee-30 plane 02 power spans 30 hat either Oheet-balsa bsi0-xp surfaces$400 Voyager CL Sorta-Scale A-pawered vemion around-the-world plane spans 46 iv$225 TR-260 AC Sport Scale Aerobatic plane tor 4-otrake 60/00 power spans 66 in$1100 Pink Lady F-40 CL Bill Wisniewskis Formula 40 Speedster tar 40 puwer spasm 27 in$400 Square FF Competition plane Teleco CO2 power spans 22 in$200 ScorpIon 60 AC Fan-tip aembatic plane 60 power spans 58 in$1150 Serendlpltyt ndeer EZB record-bolder spans 17t/s in$325 HattlIte CL Combat plane has foam wing spans 30 in$225 Fcircie numbers plans wish orderI 193 414 490 528 547 557 565 573 239 440 499 531 549 558 566 574 262 447 506 533 550 559 567 575 310 454 512 534 551 560 568 576 314 457 514 535 552 561 569 577 326 460 521 539 554 562 570 578 332 465 522 541 555 563 571 579 Plan price includes first class postage US delivery Which Air Mail over 300 miles 386 478 525 544 556 564 572 580 orders outside US lease add $25U Air Mail $125 surface mail Ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr, Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ _______________________ I I I I World Championships East Coaxo witi Tidewater mentioned possible site FenErest Field would excellent location NaEs Soaring site no sod farm wil probably considered fairly rough mosi fliers good part thaE big enough thai can set up center section ano string winches direction People come Nato will discoves area called Tidewater 16 means hot humid part area heavily pop ulaEed mouquitoes Temperatures late July have running well nineties winds time year predominantly southwest very weak lift winds light well pick up sea breeze southeast about midday strong lift aboul 45 minutes very weak no lift resE day Soartech has too much publicity year am receiving too orders back sues just cant keep up demand printing setup have good doing 15 20 copies time seven issues com pleted now just seem making copies another weekend cut ting building flying time too much think Michael Selig produces airfoil-testing material Ill have initial print ing issue done commercially got letter Michael last week Because high level interest support project able get much capable sophisticated instrumentation initially planned Although will make re sults testing much reliable has also slowed down pretty significantly Mi chael says installation will completed November testing will begin ex pect will well past beginning 1988 before will able publish data Ive also talked David Fraser has providing much asaisoance instru mentation setup David said installation quite good should produce data very high quality have computerized dataacquisition system should speed up both test runs preparation data publication wish contact Michael Selig now Penn State University position allows him go Princeton work wind tunnel project wishes address Penn State Aero Engineering 233 Hammond Bldg University Park PA 16802 Thanks scoop Herk weather forecast holds up windwise 88 Nats will just opposite 87 Might time dig Out ol Windrifter Bob Dodgoon Thermal flying second part advice Bob gives kit purchasersthe essay included back building instructions Winduong Camano Pixy kits first part treatise last months colunm Take away Bob know lift climbing try varying thermal technique find better suited particular thermal Also quick recenter satisfied rate climb altitudes under 30 ft cant afford waste move So losing altitude thermal turn should probably stick times fly out bubble cant find again have altitude try Dont leave produc tive thermal turn especially low altitude general thermal will try turn plane away encounters lift quick 170 Model Aviation No 193 No 239 No 262 No 310 No 314 No 326 No 332 No 386 No 414 No 440 No 447 No 464 No 457 No 460 No 465 No 478 No 490 No 499 No 506 No 512 No 514 No 521 No 522 No 525 No 528 No 531 No 533 No 534 No 535 No 539 No 541 No 544 No 547 No 549 No 550 No 551 No 552 No 554 No 555 No 556 No 557 No 558 No 559 No 560 No 561 No 562 No 563 No 564 No 565 No 566 No 567 No 568 No 569 No 570 No 571 No 572 No 573 No 574 No 575 No 576 No 577 L STATE ______________________________________ ZIP _____________________________ force plane turn back lift may have try several different circle locations before centered thermal Some thermals have centers shift requiring recenter plane several times during ride upward stop climbing try find productive area thermal being careful lose cant better get out dying thermal quickly find other have altitude some occasions fixed area generating lift cant work well type thermal circling Sometimes wave action may produced wind after has blown over hill ridge har monic original air pattern caused bill rate smooth gentle flying min imal control input best way fly type lift weak smooth Fly large fiat turns figure eights stay lift area make few turns possible best type plane Thermal flying de pends upon skill level flier begin ners self-neutralizing polyhedral floater like Gentle Lady good choice As skills increase versatile higher-performance Glid ers called Gliders top Thermal performance scale respective size classes opinion multichannel solid-corewing Windsong represents pinnacle present-day Thermaling machinery 134-in-span plane undercambered Ep pIer 214 alrfoil can float Out air times best polyhedral floaters large enough see fly smoothly great distances has highspeed capabilitythe entire trailing edge reflexes reduce airfoil camber LID coefficient highest ever seen Thermal Dura tion Glider allowing cover much sky possible thermal search pattern coming home Any edge over competition performance Glider point will have favor Having best plane however will little good have mastered ship sophisticated Glider better flier must order harness higher capa bility Become familiar Glider feels like extension yourself shouldnt have think about mechanics flying frees mind help fly lift opportunity almost instinct Thermal ing skills increase Perhaps thing really separates great Thermal fliers OK Thermal fliers ability immediately recognize stay thermal recenter leave times have seen gaggle fliers slowly circling ground air contained thermal minutes before smart fliers left thermal break ing up quickly decisively went search another still high enough thus saving flights great Thermaler encounters sink will recognize immediately will waste pre cious altitude floundering hardest things sink reflex wing trailing edge push Down elevator thus increase apparent sink rate get plane moving fast can fly Out sink quickly possible Fly anywherejust get out down air Whatever though retrace flight path fly through same down air have just flown Anything better Great Thermal fliers decisive smooth attentive can work air within range half mile speeding out sink maximizing form lift great Ther mal flier expects get time whenever goes up doesnt give up until ground Climbing out 15 ft un common feat skilled Thermaler final approach elsewhere common site see great Thermalers like Dave Banks thermal Windsong out hand-toss Once have basic skills best Thermaling machine fly can spend life time improving Thermaling skills will learn work lift could work year beforeor week before will find decision-making improving can now salvage max flights out air eating everyone else alive thrill Thermal compe tition flying no end far can go flight totally new challenge optimized person best optimizes flight opportunity wins contests personal growth Thermal ing skill ultimate ever-new thrill joy Soaring want thank Bob Dodgson permitting piece reprinted column As sald last month think good stuff should made available Sailpianers Bobs final paragraph especially relevant ex presses what hobby/sport about 1988 Segelfiug Bildkalender Most Sailplaners know about Sailplane Picturecalendar im ported Germany has beautiful color pic tures full-size Glider activity matted framed 12 monthly pictures make swell contest awards 88 price $1350 plus $350 UPS postage $450 Canada Get yours Aero Smithing 4420 Darventry Court Charlotte NC 28226 phone 704 365-0621 172 Model Aviation
Edition: Model Aviation - 1988/02
Page Numbers: 44, 45, 168, 170, 172
NATIONAL Scale Fun-Fly Wil Byers wrote say planning first Scale Sailplane Slope Fun-Fly US coming along nicely dates May 27-29 1988 site near Richland southeast part state Washington Additional details De cember 1987 column definite upswing interest Scale Sailplanes more fliers finding flying big beauties good slope ultimate thrill Fun-Fly will just advertisedno competition Therell just good flying great site good conversa tion old new flying buddies op portunity see Scale ships up close air As bonus will quite few very good raffle prizes Circus Hobbies has donated two JR PCM radios Other sponsors include Wilshire Model Center Viking Models USA Beemer RC Satellite City Model Builder magazine information event can obtained sending SASE Wil Byers 632 Meadows Dr E Richland WA 99352 Wil also said letter am enclosing some pictures Scale Gliders owned Peter Bechtel took Peters home Coeur dAlene ID gor geous say least built semicompleted kits appear readily available easy build 14-scale Ka-6 Speed Astir LS-4 DG-300 Peter bought except DG-300 Wil shire Model Center DG Multiplex kit came Bob Boomer Beemer RC West Also working Salto 14-scale Jerry Slates Viking Models fiberglass fu selage very high quality impressed have also purchased price opinion really quite good $97 fu selage canopy canopy frame plans ship ping Additionally Peter planning buying Hans Muller ASW 22 sports 21-ft span cant wait see ship slope 1988 Canadian Nats Jack Nunn Central Ontario Glider Group COGG wrote tell us Canadian Nats will held Brantford near Hamilton Ontario about 70 miles straight west Niagara Falls dates Au gust 6-8 Jack will CD promises will biggest best Soaring contest ever held Canada Note dates week end following AMA Nats July 23-31 avid Sailplaner could take couple weeks va cation hit two Nats trip SASE Jack Nunn RR 1 Midhurst Ontario LOL iXO Canada will get information Top man 1987 Canadian Nats Leon Kin caid sent photo Florida flying buddy Nelson Montgomery Palm Beach Gardens Nelson flew three classes 87 Canadian Nats took first Two-Meter second Un limited third Standard no overall trophy Nelson would have won Nelsons Two-Meter ship Scooter Unlimited entry Free Spirit Standard-class ship s Sagitta Leon special interest Scooter 10-fl-span Free Spirit because designer both have both appeared magazine construction articles recent being Scooter October 1983 issue Model Avia tion full-size plan No 422 thought Leons let ter about Nelson timely since shows Americans welcome Canadian Nats allowed win letter Terry Edmonds Terry mem ber Eastern Iowa Soaring Society EISS top fliers country won initial Lee Renaud Memorial Trophy Westover Nats 1985 time Terry tells us about Cross-Country Soaring EISS runs relatively large number SoarA gaggle Peter Bechtels 1/4-scale Salipianes L rest lawn home Coeur dAlene ID Front-to-Back Ka-6 Speed Astir LS-4 00-300 beautiful Ka-6 R purchased Wilshire Model Center Los Angeles Peter will flying planes inaugural National Scale Fun Fly end May details column Photos Wil Byers 44 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N Winnebago Dr Sedaila, CO 80135 Nelson Montgomery home Palm Beach FL three planes did very well 87 Canadian Nats Leon Kincaid gives details column well-equipped Cross Country team Terry Edmonds pilot Mark Anderson tends Thermic Sniffler Ryan Cone Anderson seated spotters Lee Nel son driver No dont stand up pickup motion Cover textbook Sailplane design written Dr Ferdi Gale Order copies di rectly him details column ing meets season doing club some times experiments modifications rules intent increasing participation previous three years X-C meet no team completed 22-mile course decided try make event race past rules blend AMA FAI provi sional rules intent establish course length weather conditions day majority teams could complete thus determining winners time rather distance Different course lengths used two days meet scores normalized per day using FM X-C Racing rules formula secondary reason modification rules encourage flying less-than-ideal weather conditions Usually two-day meet day much better other results teams doing much flying poorer day especially bad day second Well seemed plan stirred up controversies before contest received comments both pro con well-known fliers about later First Ill tell what happened five teams seasoned fliers first day signs good X-C day set course 12 miles seemed like relatively short course thought teams would complete least once Wrong Good lift never developed no teams completed point determined set course short enough second day ensure substantial completion race time sec ond day weather low overcast 15-20 mph winds forecast 25-30 mph winds up wind first leg course set course 24 miles Wrong again Never trust weather man afternoon brought lower winds clearing skies good lift result dash best-laid plans Another modification rules start stop times attempt stan/finish line per se watch started chase vehicle began move done Great Race Thus Sailplane could part way down course before time started Continued page 168 4 4 4 4 4 4 4 SCALE WH RADIO CONTROL ROL-UNE 0 VINTAGE 33/4 5 ES/a sizes 4 114 GOLDEN AGE sizes21/2 31/a 133/4 11/443/i 1145 P4514 EELS FREE-FLIGHT NEW BALLOON 2/4/z 314514 3 SCALE PILOTS NDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS [IfLOzA1SSend $3 fully illustrated catalog ot end other kits end accessories DEPT MA 161 PAWNEE ST SAN MARCOS CA 92069 February 1988 45 r NO MORE KICKBACKS THROWN PROPS moss popular bes se ng add gn ton system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 & 4 stroke both single & twin cylinders 4strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-hock throwing props Absolutely no predetonotion deoth 4-stroke engines Much lower priced fuel no rusty beerings commerciol fuel ovailoble Red-Mox Very low 900-1000 rmp relieble idle end easy hand starts con control ignition timing will stop pro-detonation engine will run mudi cooler develop moro power Now available coaletely shielded spark plug bed mad 90 plug cover Chosen TAG Mfg & Byron Originals foi its outateading reliability Send $100 price list newsletter ordering Box 1732 Riverton WY 82501 307 8576897 CH Electronics Inc PlC Video Tape Vol 1 Basics 115 minutes total running time great educattorial value recommended clubs hobbj shop ozuners. Model AviatIon Nov 1987 Only $1795 tax & shipping mci VISA M/C orders call 415 967-5134 Penn International Chemicals 943 Steirlin Rd Mt View CA 3 yr- - SMOOTH CONTOUR 1314 P43 1hz41/z 214514 WRAM SHOW88 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other eshibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swsp Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peekskill NY 10566 day Ticket Two day Ticket under 12 yrs day 4 ElF STATIC COMPETITION AIR models must operable RC controlled Trophies andlor prizes awarded VcRs awarded two categories Best-in-Show flying Best-inShow non-flying Top line Rc Systems 1st place category Trophies other winners wwi SCALE RC POATS FAST awi IMilSaIRI IMilItarRi POST SAwi SCALE RC BOATS Ison-elItarAl INon-MilitarAl PATTERN RACdRS R/ C OSATS SlANT SCAlE STANS-AFE SCALE ALS TIMERS RC CARS 1/12 scar JUN SR ESENTS RC CARS 1/10 scale SPORT RC CARS 110 scale SLIcERS anT atarI IIELCSPTERS tEST-INSRSW brtes mM imtO sue u space aaallabIty obtain pre-registration Static competi tion forms write include self-addressed stamped envelope Allen -Reinhardt 2 Douglas Drive Pleasanfville NY 10570 Judging takes place Sunday afternoon Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-up models Registration models will start 530 am morning SWAP SHOP WRAMs Swap Shop has become major show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregist rat ion forms receive forms send self-addressed stamped envelope John Isbisfer 4 Devon Rd Larchmont NY 10538 SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further jntormat/on write enclose self-addressed stamped envelope call Jerry Judge Nancy Road Brewster NY 10509 914-279-2727 WESTCHESTER RADIO AEROMODELERS INC 21/2D 10 AM 6 PM DIRECTIONS Are Eavlters eavawab Iucaeea Iv sausbeen wesrcresre Avunty alveg eastern yr Nartbbbufld side Sna Tar4 Slase TbasaE il-uni no baurt bail 4 Snevae aad ea 3rd ruStic Iurct Turv left lacer Tbrawavl taunece perk na area PROM THE ROSin 101 CanS Cdt 2 As let eruttia laSt sure rtgbt veneer eatalng assa number P-5 So fact both winning Scale Masters versions stopped moment approached really speaks quality Both Charlie Chambers P-s 1 Piper Cub Glen Roberts built indubitably among favorites championships once again models deserved plauditsand flier trophy op timism esprit de corps RC Soaring/Blakeslee Continued page 45 watch stopped plane touched down designated area field intent avoid timer judgment plane crossed line keep chase vehicles off road until ready roll definitely mis take short course tempted drivers push speed limit chasing fast-moving Sail plane start attempt What did contestants think modi fied rules after flying As things some liked some didnt contest seemed raise basic question about goal X-C generally called racing yet contests distance affair AMA rules encourage setting long courses lessens possibility outcome will de termined speed Perhaps term Racing should deleted rule book concept variable-length course has some merit used both FM rules fullscale Soaring events allows task closely match weather conditions Some points learned contest should consid ered 1 Some method keeping chase vehicles within speed limits paramount importance problem short courses can also problem X-C course 2 Use race start per current AMA rules Having chase vehicle ahead start line lessens initial motoring speeds 3 Make course long enough multi ple thermals required complete several reasons first discourage use Speed-type airplanes compound problem number above second lessen traffic first couple miles course third maintain Thermal-type concept versus all-out speed dash Please understand neither EISS nor self promoting rules changes event run experiment reported manner fliers interested X-C could evaluate what happened new book Dr Ferdinand Gale Dr Gale has flying models since 1934 retired aeromechanical engineer new book Aerody namic Design Radioguided Sailpianes like textbook Sailplaners anything Ive seen extremely comprehensive pretty much explains everything ever wanted know about designing Sailplanes list chapters 1 Elementary Aerodynamics 2 Airfoil 3 Wing 4 Fuselage 5 Empennages 6 Complete Sailplane 7 Longitudinal Static Sta bility 8 Lateral Static Stability 9 Maneuverabil ity 10 Tailless 11 Canard 12 Construction 13 Examples Problems 14 Problem Solu tiOns 15 Math Physics Refresher cover letter Dr Gale Ferdi prefers called gave good explanation book first glance book appears compli cated really follows sug gestion given Preface reading text very first page book written nontechnical modelers am sure will confused go through chapters order doing realizes wealth information usually spread dozens books Included 300 airfoils types flying modelsnot Sallplanes Along correct theoretical fundamentals might appeal mathematically clined designers like understand real reasons what happens Gliders can find lot data graphs practical design applications will help aeromodelers like design models scratch Ferdis book softcover printed both English Italianwith English left side page Italian right Its kind fun glance over Italian see express things Ferdi says American modelers can obtain book directly him sending $48 surface mall four six weeks $53 alr mail Personal checks international money orders welcome ad dress Dr Ferdinand Gale Via Marconi 10 28042 Baveno No Italy As PS Ferdis 1978 book Soarers still available him gives three-views dimen sions performance data 24 full-size Sailplanes extjnt time covers ships remain Scale favorites such Libelle Kestrel 17 ASW 19 21 ASK 21 Janus Nimbus 2 Cirrus 75 SB 10 Jantar HP-18 still valuable book Scale fana tics price $30 plus additional $5 air mail postage 1988 Nats news friend Flying Models magazine Soaring editor Herk Stokely sent letter some good info Soaring 88 Natsso thought youd like see end September first orga nizing meeting 1988 AMA Nats will held right Tidewater during last week July Needless say club will heavily involved management Soaring events fact appears will Event Director Soaring competition Well holding huge farm field about 10 miles Nats operations center Fentress Field field will probably shared Free Flight competition will mean well need lots room parking expecting about 125 Soaring pilots generating nearly 300 en tries due entering multiple events will four days flying Tuesday through Fri day awards banquet Friday evening Hope meet people Ive heard corresponded past come bring mosquito repellent has talk holding 89 Soaring 168 Model Aviation No 578 Schweizer 1-26B $1475 RC Quarter-Scale Sailplane spans 125 Two plan sheets No 579 Lockheed P-38 $1800 CL Precision Scale WW II fighter uses twin 45s spans 55 has operating Fowler flaps retracts throttle Three plan sheets No 580 Parnall Pixie FF Rubber Scale British biplane 112 scale spans 31V2 0 03 0 N N 0 Eo -5 e U zo e 00 o 0 tile 0 0 nil 0 2 3 C50 Ctsil 0 V sI C0 &. z0 Osil CIa U 00 l I 0r. a I STREET uv C 0 Stiletto CL Stont model McDonald winner 1976 1980 1982 FAI World Champs$375 Blue Birds RC Ken Willards formation plane 4-channel 10115 power$375 Crashmester CL Crash-proof trainer twa sizes15/30 35/40 power$125 1930 Fleet Biplane RC Sport Scale tar 35/40 4-channel Wingspan 56 /s Scale Two sheets$625 Drake II AC Ken Willards flying beat tar 3-channel 1 5-power Fly land removable gear$375 Taylor Cub RC Don Srslls Schoelyard-Scale tor 049s 2-3 channel Spans 50 in$350 Zephyr AC Small 2-channel glider tsr hand-launch tow thermal sinpe soaring$2130 Laser 200 RC Sport Scale replica championship Aerobatic tIler Uses 40 power 4-5 channel Two sheets$1075 ElectrIc Sparky AC Electric fun flier 05 motor 3-channel RC scaled-op 1930 mbber-pewer favorite$050 Cavalier AC Old-Timer-like new design has huge wing tar slow easy flights 35 pwr 3 ch Two sheets$1725 1/2A Miss America AC Old-Timer Texaco model 049 glow 2-channels$650 Sweet P30 FF Neat stick-and-tissue Outdoor Robber P-30-ciaao model contest-winner$200 Spectra AC Electric-power tor 05-size motor uses 3 different wings tar sport soaring aembaticsS700 440 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$650 Blue Max II AC Fun-fly sportoter 40-size engines spans 52 Lightweight structure$790 Buttercup AC Cute elfin oportoter sues micro 2-ch AC poise-rudder Spans 27 in. tor 020/035 puwer$300 Weekender AC Low-wing sport tIler 20-sine 4-stroke engine spans 47 in5575 4-60 AC Dec Mathews great sport flier 00-size tour-stroker engine spans 70 Two sheets$1275 Playmate AC Sport fter 3 AC channels 15/25-size engines spans 50 in5650 Extra 230 AC Giant Scale acrobatic plane spans 0 ft uses Doadra engine Twe plan sheets$1650 Henry T AC Spertoner 2-3 channel AC spans 52 has adjustable wing ifapsS475 Comet Jr Clipper Plus 35% AC Old-Timer sportater tar engine 2-ch AC spans 40 in$650 Sorts Pitts AC Reminder-scale bipe 40/60 engines spans 43 two plan sheets$1050 NI-Tech 2002 AC Canard docted-fan tar 45 engines spans 30 Two sheets$1000 Swetlow AC Lightweight hotriogger 40-size tour-stroke engines spans 50 In8025 Terrible Coupe FF Itubber-poweruri Coupe dAiver spans 45 contest-winner$475 Cessna C-37 AC Schoolyard Scale famous 304 plane fur 040/10 power 2-oh spans 42 in$500 1938 Challenger AC /sA Texaco Old-Timer spans 47 tar 040 engine 2-channel AC$550 Atrix AC AMA Class 0 Sailplane spans 110 uses 4-channel AC systemS725 Simitar Slow-MotIon 15 AC Tailless flying wing fur 15 engines spans 60 uses 3-ch AC$350 Parakeet AC Sport biplane fur 15/25 engines 3-channel AC equipment spans 42 in$675 Heron AC Sill Winters spurt Electric tar gearud 075 motor 3 AC ch spans 65 in$575 Midget Mustang AC Sport Scale 40/46 tour-stroke engine spans 54 in$000 Cricket AC Sport scalelike 20-also two- four-stroke engine spans 40 in$675 Eaglet Il/Scresmin Eagles II AC Estra wing other parts conoert Goldberg Eaglet ke biplane5250 Skinny MInnie FF Indoor ROD Stick robber-power plane spans l6/e in$175 BC Airfolter FF Replica sf1046 deSuh Gas plane uses CO2 power spans 22 in$200 Super Doubler AC Sport AerobaticyPylon fur 40146 tour-stroke engine spans 57 in$575 Double Duty AC Basic/advanced trainer 10/15 engines spans either 67 59 iv Two plan sheets$1075 Avro Lancaster FF Rubber Scale bus 4 motors spans 51 Fabulous$650 Wildcat CL Sport prutile 35 engines spans 44 Foam wing$500 Sugar Pup AC Spurtoter tot 10/25 engine Foam wing spans 40 in$550 Low Voltsge AC Electric-power sportoter 035 motor spans 44 inS475 Fierce Arrow 66 CL Delta-wing StonIer 45 power spans 60 has 1200 sq areal Two sheets$1275 Wild Hare AC Tn-motor sportoter spans 63 uses 25 engines Two plan sheets$000 XB-35 CL Reminder-scale flying wing bomber tur two engines spans 47 in$575 AC AMA Class 8 2-Meter Sailplane has 70a/ein.5pan foam wing$725 ThunderbIrd 60 CL Big competition Stunter Tom Dixon fur 45161 engines sparu 61 in$000 Sea Loon AC Pod-and-boom seaplane fur 15 power spans 40 in$675 Ex-Cels 520 FF Campenilion plane spans 65 uses 325/34cc power carbun-hber construction$675 Junkera Ju 6435 Would-Be Scale WIN Il-era fighter spans 47 uses twin hA engines$375 Avro 560 FF Mini-electric Scale 23 Brdish ultralight spans 30 in$200 Electroatmak AC Electric aerobatic plane spans 44 uses 05 motor$550 Busy Bee FF Fee Wee-30 plane 02 power spans 30 hat either Oheet-balsa bsi0-xp surfaces$400 Voyager CL Sorta-Scale A-pawered vemion around-the-world plane spans 46 iv$225 TR-260 AC Sport Scale Aerobatic plane tor 4-otrake 60/00 power spans 66 in$1100 Pink Lady F-40 CL Bill Wisniewskis Formula 40 Speedster tar 40 puwer spasm 27 in$400 Square FF Competition plane Teleco CO2 power spans 22 in$200 ScorpIon 60 AC Fan-tip aembatic plane 60 power spans 58 in$1150 Serendlpltyt ndeer EZB record-bolder spans 17t/s in$325 HattlIte CL Combat plane has foam wing spans 30 in$225 Fcircie numbers plans wish orderI 193 414 490 528 547 557 565 573 239 440 499 531 549 558 566 574 262 447 506 533 550 559 567 575 310 454 512 534 551 560 568 576 314 457 514 535 552 561 569 577 326 460 521 539 554 562 570 578 332 465 522 541 555 563 571 579 Plan price includes first class postage US delivery Which Air Mail over 300 miles 386 478 525 544 556 564 572 580 orders outside US lease add $25U Air Mail $125 surface mail Ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr, Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ _______________________ I I I I World Championships East Coaxo witi Tidewater mentioned possible site FenErest Field would excellent location NaEs Soaring site no sod farm wil probably considered fairly rough mosi fliers good part thaE big enough thai can set up center section ano string winches direction People come Nato will discoves area called Tidewater 16 means hot humid part area heavily pop ulaEed mouquitoes Temperatures late July have running well nineties winds time year predominantly southwest very weak lift winds light well pick up sea breeze southeast about midday strong lift aboul 45 minutes very weak no lift resE day Soartech has too much publicity year am receiving too orders back sues just cant keep up demand printing setup have good doing 15 20 copies time seven issues com pleted now just seem making copies another weekend cut ting building flying time too much think Michael Selig produces airfoil-testing material Ill have initial print ing issue done commercially got letter Michael last week Because high level interest support project able get much capable sophisticated instrumentation initially planned Although will make re sults testing much reliable has also slowed down pretty significantly Mi chael says installation will completed November testing will begin ex pect will well past beginning 1988 before will able publish data Ive also talked David Fraser has providing much asaisoance instru mentation setup David said installation quite good should produce data very high quality have computerized dataacquisition system should speed up both test runs preparation data publication wish contact Michael Selig now Penn State University position allows him go Princeton work wind tunnel project wishes address Penn State Aero Engineering 233 Hammond Bldg University Park PA 16802 Thanks scoop Herk weather forecast holds up windwise 88 Nats will just opposite 87 Might time dig Out ol Windrifter Bob Dodgoon Thermal flying second part advice Bob gives kit purchasersthe essay included back building instructions Winduong Camano Pixy kits first part treatise last months colunm Take away Bob know lift climbing try varying thermal technique find better suited particular thermal Also quick recenter satisfied rate climb altitudes under 30 ft cant afford waste move So losing altitude thermal turn should probably stick times fly out bubble cant find again have altitude try Dont leave produc tive thermal turn especially low altitude general thermal will try turn plane away encounters lift quick 170 Model Aviation No 193 No 239 No 262 No 310 No 314 No 326 No 332 No 386 No 414 No 440 No 447 No 464 No 457 No 460 No 465 No 478 No 490 No 499 No 506 No 512 No 514 No 521 No 522 No 525 No 528 No 531 No 533 No 534 No 535 No 539 No 541 No 544 No 547 No 549 No 550 No 551 No 552 No 554 No 555 No 556 No 557 No 558 No 559 No 560 No 561 No 562 No 563 No 564 No 565 No 566 No 567 No 568 No 569 No 570 No 571 No 572 No 573 No 574 No 575 No 576 No 577 L STATE ______________________________________ ZIP _____________________________ force plane turn back lift may have try several different circle locations before centered thermal Some thermals have centers shift requiring recenter plane several times during ride upward stop climbing try find productive area thermal being careful lose cant better get out dying thermal quickly find other have altitude some occasions fixed area generating lift cant work well type thermal circling Sometimes wave action may produced wind after has blown over hill ridge har monic original air pattern caused bill rate smooth gentle flying min imal control input best way fly type lift weak smooth Fly large fiat turns figure eights stay lift area make few turns possible best type plane Thermal flying de pends upon skill level flier begin ners self-neutralizing polyhedral floater like Gentle Lady good choice As skills increase versatile higher-performance Glid ers called Gliders top Thermal performance scale respective size classes opinion multichannel solid-corewing Windsong represents pinnacle present-day Thermaling machinery 134-in-span plane undercambered Ep pIer 214 alrfoil can float Out air times best polyhedral floaters large enough see fly smoothly great distances has highspeed capabilitythe entire trailing edge reflexes reduce airfoil camber LID coefficient highest ever seen Thermal Dura tion Glider allowing cover much sky possible thermal search pattern coming home Any edge over competition performance Glider point will have favor Having best plane however will little good have mastered ship sophisticated Glider better flier must order harness higher capa bility Become familiar Glider feels like extension yourself shouldnt have think about mechanics flying frees mind help fly lift opportunity almost instinct Thermal ing skills increase Perhaps thing really separates great Thermal fliers OK Thermal fliers ability immediately recognize stay thermal recenter leave times have seen gaggle fliers slowly circling ground air contained thermal minutes before smart fliers left thermal break ing up quickly decisively went search another still high enough thus saving flights great Thermaler encounters sink will recognize immediately will waste pre cious altitude floundering hardest things sink reflex wing trailing edge push Down elevator thus increase apparent sink rate get plane moving fast can fly Out sink quickly possible Fly anywherejust get out down air Whatever though retrace flight path fly through same down air have just flown Anything better Great Thermal fliers decisive smooth attentive can work air within range half mile speeding out sink maximizing form lift great Ther mal flier expects get time whenever goes up doesnt give up until ground Climbing out 15 ft un common feat skilled Thermaler final approach elsewhere common site see great Thermalers like Dave Banks thermal Windsong out hand-toss Once have basic skills best Thermaling machine fly can spend life time improving Thermaling skills will learn work lift could work year beforeor week before will find decision-making improving can now salvage max flights out air eating everyone else alive thrill Thermal compe tition flying no end far can go flight totally new challenge optimized person best optimizes flight opportunity wins contests personal growth Thermal ing skill ultimate ever-new thrill joy Soaring want thank Bob Dodgson permitting piece reprinted column As sald last month think good stuff should made available Sailpianers Bobs final paragraph especially relevant ex presses what hobby/sport about 1988 Segelfiug Bildkalender Most Sailplaners know about Sailplane Picturecalendar im ported Germany has beautiful color pic tures full-size Glider activity matted framed 12 monthly pictures make swell contest awards 88 price $1350 plus $350 UPS postage $450 Canada Get yours Aero Smithing 4420 Darventry Court Charlotte NC 28226 phone 704 365-0621 172 Model Aviation
Edition: Model Aviation - 1988/02
Page Numbers: 44, 45, 168, 170, 172
NATIONAL Scale Fun-Fly Wil Byers wrote say planning first Scale Sailplane Slope Fun-Fly US coming along nicely dates May 27-29 1988 site near Richland southeast part state Washington Additional details De cember 1987 column definite upswing interest Scale Sailplanes more fliers finding flying big beauties good slope ultimate thrill Fun-Fly will just advertisedno competition Therell just good flying great site good conversa tion old new flying buddies op portunity see Scale ships up close air As bonus will quite few very good raffle prizes Circus Hobbies has donated two JR PCM radios Other sponsors include Wilshire Model Center Viking Models USA Beemer RC Satellite City Model Builder magazine information event can obtained sending SASE Wil Byers 632 Meadows Dr E Richland WA 99352 Wil also said letter am enclosing some pictures Scale Gliders owned Peter Bechtel took Peters home Coeur dAlene ID gor geous say least built semicompleted kits appear readily available easy build 14-scale Ka-6 Speed Astir LS-4 DG-300 Peter bought except DG-300 Wil shire Model Center DG Multiplex kit came Bob Boomer Beemer RC West Also working Salto 14-scale Jerry Slates Viking Models fiberglass fu selage very high quality impressed have also purchased price opinion really quite good $97 fu selage canopy canopy frame plans ship ping Additionally Peter planning buying Hans Muller ASW 22 sports 21-ft span cant wait see ship slope 1988 Canadian Nats Jack Nunn Central Ontario Glider Group COGG wrote tell us Canadian Nats will held Brantford near Hamilton Ontario about 70 miles straight west Niagara Falls dates Au gust 6-8 Jack will CD promises will biggest best Soaring contest ever held Canada Note dates week end following AMA Nats July 23-31 avid Sailplaner could take couple weeks va cation hit two Nats trip SASE Jack Nunn RR 1 Midhurst Ontario LOL iXO Canada will get information Top man 1987 Canadian Nats Leon Kin caid sent photo Florida flying buddy Nelson Montgomery Palm Beach Gardens Nelson flew three classes 87 Canadian Nats took first Two-Meter second Un limited third Standard no overall trophy Nelson would have won Nelsons Two-Meter ship Scooter Unlimited entry Free Spirit Standard-class ship s Sagitta Leon special interest Scooter 10-fl-span Free Spirit because designer both have both appeared magazine construction articles recent being Scooter October 1983 issue Model Avia tion full-size plan No 422 thought Leons let ter about Nelson timely since shows Americans welcome Canadian Nats allowed win letter Terry Edmonds Terry mem ber Eastern Iowa Soaring Society EISS top fliers country won initial Lee Renaud Memorial Trophy Westover Nats 1985 time Terry tells us about Cross-Country Soaring EISS runs relatively large number SoarA gaggle Peter Bechtels 1/4-scale Salipianes L rest lawn home Coeur dAlene ID Front-to-Back Ka-6 Speed Astir LS-4 00-300 beautiful Ka-6 R purchased Wilshire Model Center Los Angeles Peter will flying planes inaugural National Scale Fun Fly end May details column Photos Wil Byers 44 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N Winnebago Dr Sedaila, CO 80135 Nelson Montgomery home Palm Beach FL three planes did very well 87 Canadian Nats Leon Kincaid gives details column well-equipped Cross Country team Terry Edmonds pilot Mark Anderson tends Thermic Sniffler Ryan Cone Anderson seated spotters Lee Nel son driver No dont stand up pickup motion Cover textbook Sailplane design written Dr Ferdi Gale Order copies di rectly him details column ing meets season doing club some times experiments modifications rules intent increasing participation previous three years X-C meet no team completed 22-mile course decided try make event race past rules blend AMA FAI provi sional rules intent establish course length weather conditions day majority teams could complete thus determining winners time rather distance Different course lengths used two days meet scores normalized per day using FM X-C Racing rules formula secondary reason modification rules encourage flying less-than-ideal weather conditions Usually two-day meet day much better other results teams doing much flying poorer day especially bad day second Well seemed plan stirred up controversies before contest received comments both pro con well-known fliers about later First Ill tell what happened five teams seasoned fliers first day signs good X-C day set course 12 miles seemed like relatively short course thought teams would complete least once Wrong Good lift never developed no teams completed point determined set course short enough second day ensure substantial completion race time sec ond day weather low overcast 15-20 mph winds forecast 25-30 mph winds up wind first leg course set course 24 miles Wrong again Never trust weather man afternoon brought lower winds clearing skies good lift result dash best-laid plans Another modification rules start stop times attempt stan/finish line per se watch started chase vehicle began move done Great Race Thus Sailplane could part way down course before time started Continued page 168 4 4 4 4 4 4 4 SCALE WH RADIO CONTROL ROL-UNE 0 VINTAGE 33/4 5 ES/a sizes 4 114 GOLDEN AGE sizes21/2 31/a 133/4 11/443/i 1145 P4514 EELS FREE-FLIGHT NEW BALLOON 2/4/z 314514 3 SCALE PILOTS NDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS [IfLOzA1SSend $3 fully illustrated catalog ot end other kits end accessories DEPT MA 161 PAWNEE ST SAN MARCOS CA 92069 February 1988 45 r NO MORE KICKBACKS THROWN PROPS moss popular bes se ng add gn ton system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 & 4 stroke both single & twin cylinders 4strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-hock throwing props Absolutely no predetonotion deoth 4-stroke engines Much lower priced fuel no rusty beerings commerciol fuel ovailoble Red-Mox Very low 900-1000 rmp relieble idle end easy hand starts con control ignition timing will stop pro-detonation engine will run mudi cooler develop moro power Now available coaletely shielded spark plug bed mad 90 plug cover Chosen TAG Mfg & Byron Originals foi its outateading reliability Send $100 price list newsletter ordering Box 1732 Riverton WY 82501 307 8576897 CH Electronics Inc PlC Video Tape Vol 1 Basics 115 minutes total running time great educattorial value recommended clubs hobbj shop ozuners. Model AviatIon Nov 1987 Only $1795 tax & shipping mci VISA M/C orders call 415 967-5134 Penn International Chemicals 943 Steirlin Rd Mt View CA 3 yr- - SMOOTH CONTOUR 1314 P43 1hz41/z 214514 WRAM SHOW88 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other eshibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swsp Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peekskill NY 10566 day Ticket Two day Ticket under 12 yrs day 4 ElF STATIC COMPETITION AIR models must operable RC controlled Trophies andlor prizes awarded VcRs awarded two categories Best-in-Show flying Best-inShow non-flying Top line Rc Systems 1st place category Trophies other winners wwi SCALE RC POATS FAST awi IMilSaIRI IMilItarRi POST SAwi SCALE RC BOATS Ison-elItarAl INon-MilitarAl PATTERN RACdRS R/ C OSATS SlANT SCAlE STANS-AFE SCALE ALS TIMERS RC CARS 1/12 scar JUN SR ESENTS RC CARS 1/10 scale SPORT RC CARS 110 scale SLIcERS anT atarI IIELCSPTERS tEST-INSRSW brtes mM imtO sue u space aaallabIty obtain pre-registration Static competi tion forms write include self-addressed stamped envelope Allen -Reinhardt 2 Douglas Drive Pleasanfville NY 10570 Judging takes place Sunday afternoon Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-up models Registration models will start 530 am morning SWAP SHOP WRAMs Swap Shop has become major show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregist rat ion forms receive forms send self-addressed stamped envelope John Isbisfer 4 Devon Rd Larchmont NY 10538 SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further jntormat/on write enclose self-addressed stamped envelope call Jerry Judge Nancy Road Brewster NY 10509 914-279-2727 WESTCHESTER RADIO AEROMODELERS INC 21/2D 10 AM 6 PM DIRECTIONS Are Eavlters eavawab Iucaeea Iv sausbeen wesrcresre Avunty alveg eastern yr Nartbbbufld side Sna Tar4 Slase TbasaE il-uni no baurt bail 4 Snevae aad ea 3rd ruStic Iurct Turv left lacer Tbrawavl taunece perk na area PROM THE ROSin 101 CanS Cdt 2 As let eruttia laSt sure rtgbt veneer eatalng assa number P-5 So fact both winning Scale Masters versions stopped moment approached really speaks quality Both Charlie Chambers P-s 1 Piper Cub Glen Roberts built indubitably among favorites championships once again models deserved plauditsand flier trophy op timism esprit de corps RC Soaring/Blakeslee Continued page 45 watch stopped plane touched down designated area field intent avoid timer judgment plane crossed line keep chase vehicles off road until ready roll definitely mis take short course tempted drivers push speed limit chasing fast-moving Sail plane start attempt What did contestants think modi fied rules after flying As things some liked some didnt contest seemed raise basic question about goal X-C generally called racing yet contests distance affair AMA rules encourage setting long courses lessens possibility outcome will de termined speed Perhaps term Racing should deleted rule book concept variable-length course has some merit used both FM rules fullscale Soaring events allows task closely match weather conditions Some points learned contest should consid ered 1 Some method keeping chase vehicles within speed limits paramount importance problem short courses can also problem X-C course 2 Use race start per current AMA rules Having chase vehicle ahead start line lessens initial motoring speeds 3 Make course long enough multi ple thermals required complete several reasons first discourage use Speed-type airplanes compound problem number above second lessen traffic first couple miles course third maintain Thermal-type concept versus all-out speed dash Please understand neither EISS nor self promoting rules changes event run experiment reported manner fliers interested X-C could evaluate what happened new book Dr Ferdinand Gale Dr Gale has flying models since 1934 retired aeromechanical engineer new book Aerody namic Design Radioguided Sailpianes like textbook Sailplaners anything Ive seen extremely comprehensive pretty much explains everything ever wanted know about designing Sailplanes list chapters 1 Elementary Aerodynamics 2 Airfoil 3 Wing 4 Fuselage 5 Empennages 6 Complete Sailplane 7 Longitudinal Static Sta bility 8 Lateral Static Stability 9 Maneuverabil ity 10 Tailless 11 Canard 12 Construction 13 Examples Problems 14 Problem Solu tiOns 15 Math Physics Refresher cover letter Dr Gale Ferdi prefers called gave good explanation book first glance book appears compli cated really follows sug gestion given Preface reading text very first page book written nontechnical modelers am sure will confused go through chapters order doing realizes wealth information usually spread dozens books Included 300 airfoils types flying modelsnot Sallplanes Along correct theoretical fundamentals might appeal mathematically clined designers like understand real reasons what happens Gliders can find lot data graphs practical design applications will help aeromodelers like design models scratch Ferdis book softcover printed both English Italianwith English left side page Italian right Its kind fun glance over Italian see express things Ferdi says American modelers can obtain book directly him sending $48 surface mall four six weeks $53 alr mail Personal checks international money orders welcome ad dress Dr Ferdinand Gale Via Marconi 10 28042 Baveno No Italy As PS Ferdis 1978 book Soarers still available him gives three-views dimen sions performance data 24 full-size Sailplanes extjnt time covers ships remain Scale favorites such Libelle Kestrel 17 ASW 19 21 ASK 21 Janus Nimbus 2 Cirrus 75 SB 10 Jantar HP-18 still valuable book Scale fana tics price $30 plus additional $5 air mail postage 1988 Nats news friend Flying Models magazine Soaring editor Herk Stokely sent letter some good info Soaring 88 Natsso thought youd like see end September first orga nizing meeting 1988 AMA Nats will held right Tidewater during last week July Needless say club will heavily involved management Soaring events fact appears will Event Director Soaring competition Well holding huge farm field about 10 miles Nats operations center Fentress Field field will probably shared Free Flight competition will mean well need lots room parking expecting about 125 Soaring pilots generating nearly 300 en tries due entering multiple events will four days flying Tuesday through Fri day awards banquet Friday evening Hope meet people Ive heard corresponded past come bring mosquito repellent has talk holding 89 Soaring 168 Model Aviation No 578 Schweizer 1-26B $1475 RC Quarter-Scale Sailplane spans 125 Two plan sheets No 579 Lockheed P-38 $1800 CL Precision Scale WW II fighter uses twin 45s spans 55 has operating Fowler flaps retracts throttle Three plan sheets No 580 Parnall Pixie FF Rubber Scale British biplane 112 scale spans 31V2 0 03 0 N N 0 Eo -5 e U zo e 00 o 0 tile 0 0 nil 0 2 3 C50 Ctsil 0 V sI C0 &. z0 Osil CIa U 00 l I 0r. a I STREET uv C 0 Stiletto CL Stont model McDonald winner 1976 1980 1982 FAI World Champs$375 Blue Birds RC Ken Willards formation plane 4-channel 10115 power$375 Crashmester CL Crash-proof trainer twa sizes15/30 35/40 power$125 1930 Fleet Biplane RC Sport Scale tar 35/40 4-channel Wingspan 56 /s Scale Two sheets$625 Drake II AC Ken Willards flying beat tar 3-channel 1 5-power Fly land removable gear$375 Taylor Cub RC Don Srslls Schoelyard-Scale tor 049s 2-3 channel Spans 50 in$350 Zephyr AC Small 2-channel glider tsr hand-launch tow thermal sinpe soaring$2130 Laser 200 RC Sport Scale replica championship Aerobatic tIler Uses 40 power 4-5 channel Two sheets$1075 ElectrIc Sparky AC Electric fun flier 05 motor 3-channel RC scaled-op 1930 mbber-pewer favorite$050 Cavalier AC Old-Timer-like new design has huge wing tar slow easy flights 35 pwr 3 ch Two sheets$1725 1/2A Miss America AC Old-Timer Texaco model 049 glow 2-channels$650 Sweet P30 FF Neat stick-and-tissue Outdoor Robber P-30-ciaao model contest-winner$200 Spectra AC Electric-power tor 05-size motor uses 3 different wings tar sport soaring aembaticsS700 440 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$650 Blue Max II AC Fun-fly sportoter 40-size engines spans 52 Lightweight structure$790 Buttercup AC Cute elfin oportoter sues micro 2-ch AC poise-rudder Spans 27 in. tor 020/035 puwer$300 Weekender AC Low-wing sport tIler 20-sine 4-stroke engine spans 47 in5575 4-60 AC Dec Mathews great sport flier 00-size tour-stroker engine spans 70 Two sheets$1275 Playmate AC Sport fter 3 AC channels 15/25-size engines spans 50 in5650 Extra 230 AC Giant Scale acrobatic plane spans 0 ft uses Doadra engine Twe plan sheets$1650 Henry T AC Spertoner 2-3 channel AC spans 52 has adjustable wing ifapsS475 Comet Jr Clipper Plus 35% AC Old-Timer sportater tar engine 2-ch AC spans 40 in$650 Sorts Pitts AC Reminder-scale bipe 40/60 engines spans 43 two plan sheets$1050 NI-Tech 2002 AC Canard docted-fan tar 45 engines spans 30 Two sheets$1000 Swetlow AC Lightweight hotriogger 40-size tour-stroke engines spans 50 In8025 Terrible Coupe FF Itubber-poweruri Coupe dAiver spans 45 contest-winner$475 Cessna C-37 AC Schoolyard Scale famous 304 plane fur 040/10 power 2-oh spans 42 in$500 1938 Challenger AC /sA Texaco Old-Timer spans 47 tar 040 engine 2-channel AC$550 Atrix AC AMA Class 0 Sailplane spans 110 uses 4-channel AC systemS725 Simitar Slow-MotIon 15 AC Tailless flying wing fur 15 engines spans 60 uses 3-ch AC$350 Parakeet AC Sport biplane fur 15/25 engines 3-channel AC equipment spans 42 in$675 Heron AC Sill Winters spurt Electric tar gearud 075 motor 3 AC ch spans 65 in$575 Midget Mustang AC Sport Scale 40/46 tour-stroke engine spans 54 in$000 Cricket AC Sport scalelike 20-also two- four-stroke engine spans 40 in$675 Eaglet Il/Scresmin Eagles II AC Estra wing other parts conoert Goldberg Eaglet ke biplane5250 Skinny MInnie FF Indoor ROD Stick robber-power plane spans l6/e in$175 BC Airfolter FF Replica sf1046 deSuh Gas plane uses CO2 power spans 22 in$200 Super Doubler AC Sport AerobaticyPylon fur 40146 tour-stroke engine spans 57 in$575 Double Duty AC Basic/advanced trainer 10/15 engines spans either 67 59 iv Two plan sheets$1075 Avro Lancaster FF Rubber Scale bus 4 motors spans 51 Fabulous$650 Wildcat CL Sport prutile 35 engines spans 44 Foam wing$500 Sugar Pup AC Spurtoter tot 10/25 engine Foam wing spans 40 in$550 Low Voltsge AC Electric-power sportoter 035 motor spans 44 inS475 Fierce Arrow 66 CL Delta-wing StonIer 45 power spans 60 has 1200 sq areal Two sheets$1275 Wild Hare AC Tn-motor sportoter spans 63 uses 25 engines Two plan sheets$000 XB-35 CL Reminder-scale flying wing bomber tur two engines spans 47 in$575 AC AMA Class 8 2-Meter Sailplane has 70a/ein.5pan foam wing$725 ThunderbIrd 60 CL Big competition Stunter Tom Dixon fur 45161 engines sparu 61 in$000 Sea Loon AC Pod-and-boom seaplane fur 15 power spans 40 in$675 Ex-Cels 520 FF Campenilion plane spans 65 uses 325/34cc power carbun-hber construction$675 Junkera Ju 6435 Would-Be Scale WIN Il-era fighter spans 47 uses twin hA engines$375 Avro 560 FF Mini-electric Scale 23 Brdish ultralight spans 30 in$200 Electroatmak AC Electric aerobatic plane spans 44 uses 05 motor$550 Busy Bee FF Fee Wee-30 plane 02 power spans 30 hat either Oheet-balsa bsi0-xp surfaces$400 Voyager CL Sorta-Scale A-pawered vemion around-the-world plane spans 46 iv$225 TR-260 AC Sport Scale Aerobatic plane tor 4-otrake 60/00 power spans 66 in$1100 Pink Lady F-40 CL Bill Wisniewskis Formula 40 Speedster tar 40 puwer spasm 27 in$400 Square FF Competition plane Teleco CO2 power spans 22 in$200 ScorpIon 60 AC Fan-tip aembatic plane 60 power spans 58 in$1150 Serendlpltyt ndeer EZB record-bolder spans 17t/s in$325 HattlIte CL Combat plane has foam wing spans 30 in$225 Fcircie numbers plans wish orderI 193 414 490 528 547 557 565 573 239 440 499 531 549 558 566 574 262 447 506 533 550 559 567 575 310 454 512 534 551 560 568 576 314 457 514 535 552 561 569 577 326 460 521 539 554 562 570 578 332 465 522 541 555 563 571 579 Plan price includes first class postage US delivery Which Air Mail over 300 miles 386 478 525 544 556 564 572 580 orders outside US lease add $25U Air Mail $125 surface mail Ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr, Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ _______________________ I I I I World Championships East Coaxo witi Tidewater mentioned possible site FenErest Field would excellent location NaEs Soaring site no sod farm wil probably considered fairly rough mosi fliers good part thaE big enough thai can set up center section ano string winches direction People come Nato will discoves area called Tidewater 16 means hot humid part area heavily pop ulaEed mouquitoes Temperatures late July have running well nineties winds time year predominantly southwest very weak lift winds light well pick up sea breeze southeast about midday strong lift aboul 45 minutes very weak no lift resE day Soartech has too much publicity year am receiving too orders back sues just cant keep up demand printing setup have good doing 15 20 copies time seven issues com pleted now just seem making copies another weekend cut ting building flying time too much think Michael Selig produces airfoil-testing material Ill have initial print ing issue done commercially got letter Michael last week Because high level interest support project able get much capable sophisticated instrumentation initially planned Although will make re sults testing much reliable has also slowed down pretty significantly Mi chael says installation will completed November testing will begin ex pect will well past beginning 1988 before will able publish data Ive also talked David Fraser has providing much asaisoance instru mentation setup David said installation quite good should produce data very high quality have computerized dataacquisition system should speed up both test runs preparation data publication wish contact Michael Selig now Penn State University position allows him go Princeton work wind tunnel project wishes address Penn State Aero Engineering 233 Hammond Bldg University Park PA 16802 Thanks scoop Herk weather forecast holds up windwise 88 Nats will just opposite 87 Might time dig Out ol Windrifter Bob Dodgoon Thermal flying second part advice Bob gives kit purchasersthe essay included back building instructions Winduong Camano Pixy kits first part treatise last months colunm Take away Bob know lift climbing try varying thermal technique find better suited particular thermal Also quick recenter satisfied rate climb altitudes under 30 ft cant afford waste move So losing altitude thermal turn should probably stick times fly out bubble cant find again have altitude try Dont leave produc tive thermal turn especially low altitude general thermal will try turn plane away encounters lift quick 170 Model Aviation No 193 No 239 No 262 No 310 No 314 No 326 No 332 No 386 No 414 No 440 No 447 No 464 No 457 No 460 No 465 No 478 No 490 No 499 No 506 No 512 No 514 No 521 No 522 No 525 No 528 No 531 No 533 No 534 No 535 No 539 No 541 No 544 No 547 No 549 No 550 No 551 No 552 No 554 No 555 No 556 No 557 No 558 No 559 No 560 No 561 No 562 No 563 No 564 No 565 No 566 No 567 No 568 No 569 No 570 No 571 No 572 No 573 No 574 No 575 No 576 No 577 L STATE ______________________________________ ZIP _____________________________ force plane turn back lift may have try several different circle locations before centered thermal Some thermals have centers shift requiring recenter plane several times during ride upward stop climbing try find productive area thermal being careful lose cant better get out dying thermal quickly find other have altitude some occasions fixed area generating lift cant work well type thermal circling Sometimes wave action may produced wind after has blown over hill ridge har monic original air pattern caused bill rate smooth gentle flying min imal control input best way fly type lift weak smooth Fly large fiat turns figure eights stay lift area make few turns possible best type plane Thermal flying de pends upon skill level flier begin ners self-neutralizing polyhedral floater like Gentle Lady good choice As skills increase versatile higher-performance Glid ers called Gliders top Thermal performance scale respective size classes opinion multichannel solid-corewing Windsong represents pinnacle present-day Thermaling machinery 134-in-span plane undercambered Ep pIer 214 alrfoil can float Out air times best polyhedral floaters large enough see fly smoothly great distances has highspeed capabilitythe entire trailing edge reflexes reduce airfoil camber LID coefficient highest ever seen Thermal Dura tion Glider allowing cover much sky possible thermal search pattern coming home Any edge over competition performance Glider point will have favor Having best plane however will little good have mastered ship sophisticated Glider better flier must order harness higher capa bility Become familiar Glider feels like extension yourself shouldnt have think about mechanics flying frees mind help fly lift opportunity almost instinct Thermal ing skills increase Perhaps thing really separates great Thermal fliers OK Thermal fliers ability immediately recognize stay thermal recenter leave times have seen gaggle fliers slowly circling ground air contained thermal minutes before smart fliers left thermal break ing up quickly decisively went search another still high enough thus saving flights great Thermaler encounters sink will recognize immediately will waste pre cious altitude floundering hardest things sink reflex wing trailing edge push Down elevator thus increase apparent sink rate get plane moving fast can fly Out sink quickly possible Fly anywherejust get out down air Whatever though retrace flight path fly through same down air have just flown Anything better Great Thermal fliers decisive smooth attentive can work air within range half mile speeding out sink maximizing form lift great Ther mal flier expects get time whenever goes up doesnt give up until ground Climbing out 15 ft un common feat skilled Thermaler final approach elsewhere common site see great Thermalers like Dave Banks thermal Windsong out hand-toss Once have basic skills best Thermaling machine fly can spend life time improving Thermaling skills will learn work lift could work year beforeor week before will find decision-making improving can now salvage max flights out air eating everyone else alive thrill Thermal compe tition flying no end far can go flight totally new challenge optimized person best optimizes flight opportunity wins contests personal growth Thermal ing skill ultimate ever-new thrill joy Soaring want thank Bob Dodgson permitting piece reprinted column As sald last month think good stuff should made available Sailpianers Bobs final paragraph especially relevant ex presses what hobby/sport about 1988 Segelfiug Bildkalender Most Sailplaners know about Sailplane Picturecalendar im ported Germany has beautiful color pic tures full-size Glider activity matted framed 12 monthly pictures make swell contest awards 88 price $1350 plus $350 UPS postage $450 Canada Get yours Aero Smithing 4420 Darventry Court Charlotte NC 28226 phone 704 365-0621 172 Model Aviation
Edition: Model Aviation - 1988/02
Page Numbers: 44, 45, 168, 170, 172
NATIONAL Scale Fun-Fly Wil Byers wrote say planning first Scale Sailplane Slope Fun-Fly US coming along nicely dates May 27-29 1988 site near Richland southeast part state Washington Additional details De cember 1987 column definite upswing interest Scale Sailplanes more fliers finding flying big beauties good slope ultimate thrill Fun-Fly will just advertisedno competition Therell just good flying great site good conversa tion old new flying buddies op portunity see Scale ships up close air As bonus will quite few very good raffle prizes Circus Hobbies has donated two JR PCM radios Other sponsors include Wilshire Model Center Viking Models USA Beemer RC Satellite City Model Builder magazine information event can obtained sending SASE Wil Byers 632 Meadows Dr E Richland WA 99352 Wil also said letter am enclosing some pictures Scale Gliders owned Peter Bechtel took Peters home Coeur dAlene ID gor geous say least built semicompleted kits appear readily available easy build 14-scale Ka-6 Speed Astir LS-4 DG-300 Peter bought except DG-300 Wil shire Model Center DG Multiplex kit came Bob Boomer Beemer RC West Also working Salto 14-scale Jerry Slates Viking Models fiberglass fu selage very high quality impressed have also purchased price opinion really quite good $97 fu selage canopy canopy frame plans ship ping Additionally Peter planning buying Hans Muller ASW 22 sports 21-ft span cant wait see ship slope 1988 Canadian Nats Jack Nunn Central Ontario Glider Group COGG wrote tell us Canadian Nats will held Brantford near Hamilton Ontario about 70 miles straight west Niagara Falls dates Au gust 6-8 Jack will CD promises will biggest best Soaring contest ever held Canada Note dates week end following AMA Nats July 23-31 avid Sailplaner could take couple weeks va cation hit two Nats trip SASE Jack Nunn RR 1 Midhurst Ontario LOL iXO Canada will get information Top man 1987 Canadian Nats Leon Kin caid sent photo Florida flying buddy Nelson Montgomery Palm Beach Gardens Nelson flew three classes 87 Canadian Nats took first Two-Meter second Un limited third Standard no overall trophy Nelson would have won Nelsons Two-Meter ship Scooter Unlimited entry Free Spirit Standard-class ship s Sagitta Leon special interest Scooter 10-fl-span Free Spirit because designer both have both appeared magazine construction articles recent being Scooter October 1983 issue Model Avia tion full-size plan No 422 thought Leons let ter about Nelson timely since shows Americans welcome Canadian Nats allowed win letter Terry Edmonds Terry mem ber Eastern Iowa Soaring Society EISS top fliers country won initial Lee Renaud Memorial Trophy Westover Nats 1985 time Terry tells us about Cross-Country Soaring EISS runs relatively large number SoarA gaggle Peter Bechtels 1/4-scale Salipianes L rest lawn home Coeur dAlene ID Front-to-Back Ka-6 Speed Astir LS-4 00-300 beautiful Ka-6 R purchased Wilshire Model Center Los Angeles Peter will flying planes inaugural National Scale Fun Fly end May details column Photos Wil Byers 44 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N Winnebago Dr Sedaila, CO 80135 Nelson Montgomery home Palm Beach FL three planes did very well 87 Canadian Nats Leon Kincaid gives details column well-equipped Cross Country team Terry Edmonds pilot Mark Anderson tends Thermic Sniffler Ryan Cone Anderson seated spotters Lee Nel son driver No dont stand up pickup motion Cover textbook Sailplane design written Dr Ferdi Gale Order copies di rectly him details column ing meets season doing club some times experiments modifications rules intent increasing participation previous three years X-C meet no team completed 22-mile course decided try make event race past rules blend AMA FAI provi sional rules intent establish course length weather conditions day majority teams could complete thus determining winners time rather distance Different course lengths used two days meet scores normalized per day using FM X-C Racing rules formula secondary reason modification rules encourage flying less-than-ideal weather conditions Usually two-day meet day much better other results teams doing much flying poorer day especially bad day second Well seemed plan stirred up controversies before contest received comments both pro con well-known fliers about later First Ill tell what happened five teams seasoned fliers first day signs good X-C day set course 12 miles seemed like relatively short course thought teams would complete least once Wrong Good lift never developed no teams completed point determined set course short enough second day ensure substantial completion race time sec ond day weather low overcast 15-20 mph winds forecast 25-30 mph winds up wind first leg course set course 24 miles Wrong again Never trust weather man afternoon brought lower winds clearing skies good lift result dash best-laid plans Another modification rules start stop times attempt stan/finish line per se watch started chase vehicle began move done Great Race Thus Sailplane could part way down course before time started Continued page 168 4 4 4 4 4 4 4 SCALE WH RADIO CONTROL ROL-UNE 0 VINTAGE 33/4 5 ES/a sizes 4 114 GOLDEN AGE sizes21/2 31/a 133/4 11/443/i 1145 P4514 EELS FREE-FLIGHT NEW BALLOON 2/4/z 314514 3 SCALE PILOTS NDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS [IfLOzA1SSend $3 fully illustrated catalog ot end other kits end accessories DEPT MA 161 PAWNEE ST SAN MARCOS CA 92069 February 1988 45 r NO MORE KICKBACKS THROWN PROPS moss popular bes se ng add gn ton system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 & 4 stroke both single & twin cylinders 4strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-hock throwing props Absolutely no predetonotion deoth 4-stroke engines Much lower priced fuel no rusty beerings commerciol fuel ovailoble Red-Mox Very low 900-1000 rmp relieble idle end easy hand starts con control ignition timing will stop pro-detonation engine will run mudi cooler develop moro power Now available coaletely shielded spark plug bed mad 90 plug cover Chosen TAG Mfg & Byron Originals foi its outateading reliability Send $100 price list newsletter ordering Box 1732 Riverton WY 82501 307 8576897 CH Electronics Inc PlC Video Tape Vol 1 Basics 115 minutes total running time great educattorial value recommended clubs hobbj shop ozuners. Model AviatIon Nov 1987 Only $1795 tax & shipping mci VISA M/C orders call 415 967-5134 Penn International Chemicals 943 Steirlin Rd Mt View CA 3 yr- - SMOOTH CONTOUR 1314 P43 1hz41/z 214514 WRAM SHOW88 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other eshibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swsp Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peekskill NY 10566 day Ticket Two day Ticket under 12 yrs day 4 ElF STATIC COMPETITION AIR models must operable RC controlled Trophies andlor prizes awarded VcRs awarded two categories Best-in-Show flying Best-inShow non-flying Top line Rc Systems 1st place category Trophies other winners wwi SCALE RC POATS FAST awi IMilSaIRI IMilItarRi POST SAwi SCALE RC BOATS Ison-elItarAl INon-MilitarAl PATTERN RACdRS R/ C OSATS SlANT SCAlE STANS-AFE SCALE ALS TIMERS RC CARS 1/12 scar JUN SR ESENTS RC CARS 1/10 scale SPORT RC CARS 110 scale SLIcERS anT atarI IIELCSPTERS tEST-INSRSW brtes mM imtO sue u space aaallabIty obtain pre-registration Static competi tion forms write include self-addressed stamped envelope Allen -Reinhardt 2 Douglas Drive Pleasanfville NY 10570 Judging takes place Sunday afternoon Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-up models Registration models will start 530 am morning SWAP SHOP WRAMs Swap Shop has become major show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregist rat ion forms receive forms send self-addressed stamped envelope John Isbisfer 4 Devon Rd Larchmont NY 10538 SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further jntormat/on write enclose self-addressed stamped envelope call Jerry Judge Nancy Road Brewster NY 10509 914-279-2727 WESTCHESTER RADIO AEROMODELERS INC 21/2D 10 AM 6 PM DIRECTIONS Are Eavlters eavawab Iucaeea Iv sausbeen wesrcresre Avunty alveg eastern yr Nartbbbufld side Sna Tar4 Slase TbasaE il-uni no baurt bail 4 Snevae aad ea 3rd ruStic Iurct Turv left lacer Tbrawavl taunece perk na area PROM THE ROSin 101 CanS Cdt 2 As let eruttia laSt sure rtgbt veneer eatalng assa number P-5 So fact both winning Scale Masters versions stopped moment approached really speaks quality Both Charlie Chambers P-s 1 Piper Cub Glen Roberts built indubitably among favorites championships once again models deserved plauditsand flier trophy op timism esprit de corps RC Soaring/Blakeslee Continued page 45 watch stopped plane touched down designated area field intent avoid timer judgment plane crossed line keep chase vehicles off road until ready roll definitely mis take short course tempted drivers push speed limit chasing fast-moving Sail plane start attempt What did contestants think modi fied rules after flying As things some liked some didnt contest seemed raise basic question about goal X-C generally called racing yet contests distance affair AMA rules encourage setting long courses lessens possibility outcome will de termined speed Perhaps term Racing should deleted rule book concept variable-length course has some merit used both FM rules fullscale Soaring events allows task closely match weather conditions Some points learned contest should consid ered 1 Some method keeping chase vehicles within speed limits paramount importance problem short courses can also problem X-C course 2 Use race start per current AMA rules Having chase vehicle ahead start line lessens initial motoring speeds 3 Make course long enough multi ple thermals required complete several reasons first discourage use Speed-type airplanes compound problem number above second lessen traffic first couple miles course third maintain Thermal-type concept versus all-out speed dash Please understand neither EISS nor self promoting rules changes event run experiment reported manner fliers interested X-C could evaluate what happened new book Dr Ferdinand Gale Dr Gale has flying models since 1934 retired aeromechanical engineer new book Aerody namic Design Radioguided Sailpianes like textbook Sailplaners anything Ive seen extremely comprehensive pretty much explains everything ever wanted know about designing Sailplanes list chapters 1 Elementary Aerodynamics 2 Airfoil 3 Wing 4 Fuselage 5 Empennages 6 Complete Sailplane 7 Longitudinal Static Sta bility 8 Lateral Static Stability 9 Maneuverabil ity 10 Tailless 11 Canard 12 Construction 13 Examples Problems 14 Problem Solu tiOns 15 Math Physics Refresher cover letter Dr Gale Ferdi prefers called gave good explanation book first glance book appears compli cated really follows sug gestion given Preface reading text very first page book written nontechnical modelers am sure will confused go through chapters order doing realizes wealth information usually spread dozens books Included 300 airfoils types flying modelsnot Sallplanes Along correct theoretical fundamentals might appeal mathematically clined designers like understand real reasons what happens Gliders can find lot data graphs practical design applications will help aeromodelers like design models scratch Ferdis book softcover printed both English Italianwith English left side page Italian right Its kind fun glance over Italian see express things Ferdi says American modelers can obtain book directly him sending $48 surface mall four six weeks $53 alr mail Personal checks international money orders welcome ad dress Dr Ferdinand Gale Via Marconi 10 28042 Baveno No Italy As PS Ferdis 1978 book Soarers still available him gives three-views dimen sions performance data 24 full-size Sailplanes extjnt time covers ships remain Scale favorites such Libelle Kestrel 17 ASW 19 21 ASK 21 Janus Nimbus 2 Cirrus 75 SB 10 Jantar HP-18 still valuable book Scale fana tics price $30 plus additional $5 air mail postage 1988 Nats news friend Flying Models magazine Soaring editor Herk Stokely sent letter some good info Soaring 88 Natsso thought youd like see end September first orga nizing meeting 1988 AMA Nats will held right Tidewater during last week July Needless say club will heavily involved management Soaring events fact appears will Event Director Soaring competition Well holding huge farm field about 10 miles Nats operations center Fentress Field field will probably shared Free Flight competition will mean well need lots room parking expecting about 125 Soaring pilots generating nearly 300 en tries due entering multiple events will four days flying Tuesday through Fri day awards banquet Friday evening Hope meet people Ive heard corresponded past come bring mosquito repellent has talk holding 89 Soaring 168 Model Aviation No 578 Schweizer 1-26B $1475 RC Quarter-Scale Sailplane spans 125 Two plan sheets No 579 Lockheed P-38 $1800 CL Precision Scale WW II fighter uses twin 45s spans 55 has operating Fowler flaps retracts throttle Three plan sheets No 580 Parnall Pixie FF Rubber Scale British biplane 112 scale spans 31V2 0 03 0 N N 0 Eo -5 e U zo e 00 o 0 tile 0 0 nil 0 2 3 C50 Ctsil 0 V sI C0 &. z0 Osil CIa U 00 l I 0r. a I STREET uv C 0 Stiletto CL Stont model McDonald winner 1976 1980 1982 FAI World Champs$375 Blue Birds RC Ken Willards formation plane 4-channel 10115 power$375 Crashmester CL Crash-proof trainer twa sizes15/30 35/40 power$125 1930 Fleet Biplane RC Sport Scale tar 35/40 4-channel Wingspan 56 /s Scale Two sheets$625 Drake II AC Ken Willards flying beat tar 3-channel 1 5-power Fly land removable gear$375 Taylor Cub RC Don Srslls Schoelyard-Scale tor 049s 2-3 channel Spans 50 in$350 Zephyr AC Small 2-channel glider tsr hand-launch tow thermal sinpe soaring$2130 Laser 200 RC Sport Scale replica championship Aerobatic tIler Uses 40 power 4-5 channel Two sheets$1075 ElectrIc Sparky AC Electric fun flier 05 motor 3-channel RC scaled-op 1930 mbber-pewer favorite$050 Cavalier AC Old-Timer-like new design has huge wing tar slow easy flights 35 pwr 3 ch Two sheets$1725 1/2A Miss America AC Old-Timer Texaco model 049 glow 2-channels$650 Sweet P30 FF Neat stick-and-tissue Outdoor Robber P-30-ciaao model contest-winner$200 Spectra AC Electric-power tor 05-size motor uses 3 different wings tar sport soaring aembaticsS700 440 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$650 Blue Max II AC Fun-fly sportoter 40-size engines spans 52 Lightweight structure$790 Buttercup AC Cute elfin oportoter sues micro 2-ch AC poise-rudder Spans 27 in. tor 020/035 puwer$300 Weekender AC Low-wing sport tIler 20-sine 4-stroke engine spans 47 in5575 4-60 AC Dec Mathews great sport flier 00-size tour-stroker engine spans 70 Two sheets$1275 Playmate AC Sport fter 3 AC channels 15/25-size engines spans 50 in5650 Extra 230 AC Giant Scale acrobatic plane spans 0 ft uses Doadra engine Twe plan sheets$1650 Henry T AC Spertoner 2-3 channel AC spans 52 has adjustable wing ifapsS475 Comet Jr Clipper Plus 35% AC Old-Timer sportater tar engine 2-ch AC spans 40 in$650 Sorts Pitts AC Reminder-scale bipe 40/60 engines spans 43 two plan sheets$1050 NI-Tech 2002 AC Canard docted-fan tar 45 engines spans 30 Two sheets$1000 Swetlow AC Lightweight hotriogger 40-size tour-stroke engines spans 50 In8025 Terrible Coupe FF Itubber-poweruri Coupe dAiver spans 45 contest-winner$475 Cessna C-37 AC Schoolyard Scale famous 304 plane fur 040/10 power 2-oh spans 42 in$500 1938 Challenger AC /sA Texaco Old-Timer spans 47 tar 040 engine 2-channel AC$550 Atrix AC AMA Class 0 Sailplane spans 110 uses 4-channel AC systemS725 Simitar Slow-MotIon 15 AC Tailless flying wing fur 15 engines spans 60 uses 3-ch AC$350 Parakeet AC Sport biplane fur 15/25 engines 3-channel AC equipment spans 42 in$675 Heron AC Sill Winters spurt Electric tar gearud 075 motor 3 AC ch spans 65 in$575 Midget Mustang AC Sport Scale 40/46 tour-stroke engine spans 54 in$000 Cricket AC Sport scalelike 20-also two- four-stroke engine spans 40 in$675 Eaglet Il/Scresmin Eagles II AC Estra wing other parts conoert Goldberg Eaglet ke biplane5250 Skinny MInnie FF Indoor ROD Stick robber-power plane spans l6/e in$175 BC Airfolter FF Replica sf1046 deSuh Gas plane uses CO2 power spans 22 in$200 Super Doubler AC Sport AerobaticyPylon fur 40146 tour-stroke engine spans 57 in$575 Double Duty AC Basic/advanced trainer 10/15 engines spans either 67 59 iv Two plan sheets$1075 Avro Lancaster FF Rubber Scale bus 4 motors spans 51 Fabulous$650 Wildcat CL Sport prutile 35 engines spans 44 Foam wing$500 Sugar Pup AC Spurtoter tot 10/25 engine Foam wing spans 40 in$550 Low Voltsge AC Electric-power sportoter 035 motor spans 44 inS475 Fierce Arrow 66 CL Delta-wing StonIer 45 power spans 60 has 1200 sq areal Two sheets$1275 Wild Hare AC Tn-motor sportoter spans 63 uses 25 engines Two plan sheets$000 XB-35 CL Reminder-scale flying wing bomber tur two engines spans 47 in$575 AC AMA Class 8 2-Meter Sailplane has 70a/ein.5pan foam wing$725 ThunderbIrd 60 CL Big competition Stunter Tom Dixon fur 45161 engines sparu 61 in$000 Sea Loon AC Pod-and-boom seaplane fur 15 power spans 40 in$675 Ex-Cels 520 FF Campenilion plane spans 65 uses 325/34cc power carbun-hber construction$675 Junkera Ju 6435 Would-Be Scale WIN Il-era fighter spans 47 uses twin hA engines$375 Avro 560 FF Mini-electric Scale 23 Brdish ultralight spans 30 in$200 Electroatmak AC Electric aerobatic plane spans 44 uses 05 motor$550 Busy Bee FF Fee Wee-30 plane 02 power spans 30 hat either Oheet-balsa bsi0-xp surfaces$400 Voyager CL Sorta-Scale A-pawered vemion around-the-world plane spans 46 iv$225 TR-260 AC Sport Scale Aerobatic plane tor 4-otrake 60/00 power spans 66 in$1100 Pink Lady F-40 CL Bill Wisniewskis Formula 40 Speedster tar 40 puwer spasm 27 in$400 Square FF Competition plane Teleco CO2 power spans 22 in$200 ScorpIon 60 AC Fan-tip aembatic plane 60 power spans 58 in$1150 Serendlpltyt ndeer EZB record-bolder spans 17t/s in$325 HattlIte CL Combat plane has foam wing spans 30 in$225 Fcircie numbers plans wish orderI 193 414 490 528 547 557 565 573 239 440 499 531 549 558 566 574 262 447 506 533 550 559 567 575 310 454 512 534 551 560 568 576 314 457 514 535 552 561 569 577 326 460 521 539 554 562 570 578 332 465 522 541 555 563 571 579 Plan price includes first class postage US delivery Which Air Mail over 300 miles 386 478 525 544 556 564 572 580 orders outside US lease add $25U Air Mail $125 surface mail Ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr, Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ _______________________ I I I I World Championships East Coaxo witi Tidewater mentioned possible site FenErest Field would excellent location NaEs Soaring site no sod farm wil probably considered fairly rough mosi fliers good part thaE big enough thai can set up center section ano string winches direction People come Nato will discoves area called Tidewater 16 means hot humid part area heavily pop ulaEed mouquitoes Temperatures late July have running well nineties winds time year predominantly southwest very weak lift winds light well pick up sea breeze southeast about midday strong lift aboul 45 minutes very weak no lift resE day Soartech has too much publicity year am receiving too orders back sues just cant keep up demand printing setup have good doing 15 20 copies time seven issues com pleted now just seem making copies another weekend cut ting building flying time too much think Michael Selig produces airfoil-testing material Ill have initial print ing issue done commercially got letter Michael last week Because high level interest support project able get much capable sophisticated instrumentation initially planned Although will make re sults testing much reliable has also slowed down pretty significantly Mi chael says installation will completed November testing will begin ex pect will well past beginning 1988 before will able publish data Ive also talked David Fraser has providing much asaisoance instru mentation setup David said installation quite good should produce data very high quality have computerized dataacquisition system should speed up both test runs preparation data publication wish contact Michael Selig now Penn State University position allows him go Princeton work wind tunnel project wishes address Penn State Aero Engineering 233 Hammond Bldg University Park PA 16802 Thanks scoop Herk weather forecast holds up windwise 88 Nats will just opposite 87 Might time dig Out ol Windrifter Bob Dodgoon Thermal flying second part advice Bob gives kit purchasersthe essay included back building instructions Winduong Camano Pixy kits first part treatise last months colunm Take away Bob know lift climbing try varying thermal technique find better suited particular thermal Also quick recenter satisfied rate climb altitudes under 30 ft cant afford waste move So losing altitude thermal turn should probably stick times fly out bubble cant find again have altitude try Dont leave produc tive thermal turn especially low altitude general thermal will try turn plane away encounters lift quick 170 Model Aviation No 193 No 239 No 262 No 310 No 314 No 326 No 332 No 386 No 414 No 440 No 447 No 464 No 457 No 460 No 465 No 478 No 490 No 499 No 506 No 512 No 514 No 521 No 522 No 525 No 528 No 531 No 533 No 534 No 535 No 539 No 541 No 544 No 547 No 549 No 550 No 551 No 552 No 554 No 555 No 556 No 557 No 558 No 559 No 560 No 561 No 562 No 563 No 564 No 565 No 566 No 567 No 568 No 569 No 570 No 571 No 572 No 573 No 574 No 575 No 576 No 577 L STATE ______________________________________ ZIP _____________________________ force plane turn back lift may have try several different circle locations before centered thermal Some thermals have centers shift requiring recenter plane several times during ride upward stop climbing try find productive area thermal being careful lose cant better get out dying thermal quickly find other have altitude some occasions fixed area generating lift cant work well type thermal circling Sometimes wave action may produced wind after has blown over hill ridge har monic original air pattern caused bill rate smooth gentle flying min imal control input best way fly type lift weak smooth Fly large fiat turns figure eights stay lift area make few turns possible best type plane Thermal flying de pends upon skill level flier begin ners self-neutralizing polyhedral floater like Gentle Lady good choice As skills increase versatile higher-performance Glid ers called Gliders top Thermal performance scale respective size classes opinion multichannel solid-corewing Windsong represents pinnacle present-day Thermaling machinery 134-in-span plane undercambered Ep pIer 214 alrfoil can float Out air times best polyhedral floaters large enough see fly smoothly great distances has highspeed capabilitythe entire trailing edge reflexes reduce airfoil camber LID coefficient highest ever seen Thermal Dura tion Glider allowing cover much sky possible thermal search pattern coming home Any edge over competition performance Glider point will have favor Having best plane however will little good have mastered ship sophisticated Glider better flier must order harness higher capa bility Become familiar Glider feels like extension yourself shouldnt have think about mechanics flying frees mind help fly lift opportunity almost instinct Thermal ing skills increase Perhaps thing really separates great Thermal fliers OK Thermal fliers ability immediately recognize stay thermal recenter leave times have seen gaggle fliers slowly circling ground air contained thermal minutes before smart fliers left thermal break ing up quickly decisively went search another still high enough thus saving flights great Thermaler encounters sink will recognize immediately will waste pre cious altitude floundering hardest things sink reflex wing trailing edge push Down elevator thus increase apparent sink rate get plane moving fast can fly Out sink quickly possible Fly anywherejust get out down air Whatever though retrace flight path fly through same down air have just flown Anything better Great Thermal fliers decisive smooth attentive can work air within range half mile speeding out sink maximizing form lift great Ther mal flier expects get time whenever goes up doesnt give up until ground Climbing out 15 ft un common feat skilled Thermaler final approach elsewhere common site see great Thermalers like Dave Banks thermal Windsong out hand-toss Once have basic skills best Thermaling machine fly can spend life time improving Thermaling skills will learn work lift could work year beforeor week before will find decision-making improving can now salvage max flights out air eating everyone else alive thrill Thermal compe tition flying no end far can go flight totally new challenge optimized person best optimizes flight opportunity wins contests personal growth Thermal ing skill ultimate ever-new thrill joy Soaring want thank Bob Dodgson permitting piece reprinted column As sald last month think good stuff should made available Sailpianers Bobs final paragraph especially relevant ex presses what hobby/sport about 1988 Segelfiug Bildkalender Most Sailplaners know about Sailplane Picturecalendar im ported Germany has beautiful color pic tures full-size Glider activity matted framed 12 monthly pictures make swell contest awards 88 price $1350 plus $350 UPS postage $450 Canada Get yours Aero Smithing 4420 Darventry Court Charlotte NC 28226 phone 704 365-0621 172 Model Aviation
Edition: Model Aviation - 1988/02
Page Numbers: 44, 45, 168, 170, 172
NATIONAL Scale Fun-Fly Wil Byers wrote say planning first Scale Sailplane Slope Fun-Fly US coming along nicely dates May 27-29 1988 site near Richland southeast part state Washington Additional details De cember 1987 column definite upswing interest Scale Sailplanes more fliers finding flying big beauties good slope ultimate thrill Fun-Fly will just advertisedno competition Therell just good flying great site good conversa tion old new flying buddies op portunity see Scale ships up close air As bonus will quite few very good raffle prizes Circus Hobbies has donated two JR PCM radios Other sponsors include Wilshire Model Center Viking Models USA Beemer RC Satellite City Model Builder magazine information event can obtained sending SASE Wil Byers 632 Meadows Dr E Richland WA 99352 Wil also said letter am enclosing some pictures Scale Gliders owned Peter Bechtel took Peters home Coeur dAlene ID gor geous say least built semicompleted kits appear readily available easy build 14-scale Ka-6 Speed Astir LS-4 DG-300 Peter bought except DG-300 Wil shire Model Center DG Multiplex kit came Bob Boomer Beemer RC West Also working Salto 14-scale Jerry Slates Viking Models fiberglass fu selage very high quality impressed have also purchased price opinion really quite good $97 fu selage canopy canopy frame plans ship ping Additionally Peter planning buying Hans Muller ASW 22 sports 21-ft span cant wait see ship slope 1988 Canadian Nats Jack Nunn Central Ontario Glider Group COGG wrote tell us Canadian Nats will held Brantford near Hamilton Ontario about 70 miles straight west Niagara Falls dates Au gust 6-8 Jack will CD promises will biggest best Soaring contest ever held Canada Note dates week end following AMA Nats July 23-31 avid Sailplaner could take couple weeks va cation hit two Nats trip SASE Jack Nunn RR 1 Midhurst Ontario LOL iXO Canada will get information Top man 1987 Canadian Nats Leon Kin caid sent photo Florida flying buddy Nelson Montgomery Palm Beach Gardens Nelson flew three classes 87 Canadian Nats took first Two-Meter second Un limited third Standard no overall trophy Nelson would have won Nelsons Two-Meter ship Scooter Unlimited entry Free Spirit Standard-class ship s Sagitta Leon special interest Scooter 10-fl-span Free Spirit because designer both have both appeared magazine construction articles recent being Scooter October 1983 issue Model Avia tion full-size plan No 422 thought Leons let ter about Nelson timely since shows Americans welcome Canadian Nats allowed win letter Terry Edmonds Terry mem ber Eastern Iowa Soaring Society EISS top fliers country won initial Lee Renaud Memorial Trophy Westover Nats 1985 time Terry tells us about Cross-Country Soaring EISS runs relatively large number SoarA gaggle Peter Bechtels 1/4-scale Salipianes L rest lawn home Coeur dAlene ID Front-to-Back Ka-6 Speed Astir LS-4 00-300 beautiful Ka-6 R purchased Wilshire Model Center Los Angeles Peter will flying planes inaugural National Scale Fun Fly end May details column Photos Wil Byers 44 Model Aviation Radio Conoi Soaring Byron Blakeslee 3134 N Winnebago Dr Sedaila, CO 80135 Nelson Montgomery home Palm Beach FL three planes did very well 87 Canadian Nats Leon Kincaid gives details column well-equipped Cross Country team Terry Edmonds pilot Mark Anderson tends Thermic Sniffler Ryan Cone Anderson seated spotters Lee Nel son driver No dont stand up pickup motion Cover textbook Sailplane design written Dr Ferdi Gale Order copies di rectly him details column ing meets season doing club some times experiments modifications rules intent increasing participation previous three years X-C meet no team completed 22-mile course decided try make event race past rules blend AMA FAI provi sional rules intent establish course length weather conditions day majority teams could complete thus determining winners time rather distance Different course lengths used two days meet scores normalized per day using FM X-C Racing rules formula secondary reason modification rules encourage flying less-than-ideal weather conditions Usually two-day meet day much better other results teams doing much flying poorer day especially bad day second Well seemed plan stirred up controversies before contest received comments both pro con well-known fliers about later First Ill tell what happened five teams seasoned fliers first day signs good X-C day set course 12 miles seemed like relatively short course thought teams would complete least once Wrong Good lift never developed no teams completed point determined set course short enough second day ensure substantial completion race time sec ond day weather low overcast 15-20 mph winds forecast 25-30 mph winds up wind first leg course set course 24 miles Wrong again Never trust weather man afternoon brought lower winds clearing skies good lift result dash best-laid plans Another modification rules start stop times attempt stan/finish line per se watch started chase vehicle began move done Great Race Thus Sailplane could part way down course before time started Continued page 168 4 4 4 4 4 4 4 SCALE WH RADIO CONTROL ROL-UNE 0 VINTAGE 33/4 5 ES/a sizes 4 114 GOLDEN AGE sizes21/2 31/a 133/4 11/443/i 1145 P4514 EELS FREE-FLIGHT NEW BALLOON 2/4/z 314514 3 SCALE PILOTS NDERS ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS [IfLOzA1SSend $3 fully illustrated catalog ot end other kits end accessories DEPT MA 161 PAWNEE ST SAN MARCOS CA 92069 February 1988 45 r NO MORE KICKBACKS THROWN PROPS moss popular bes se ng add gn ton system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 & 4 stroke both single & twin cylinders 4strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-hock throwing props Absolutely no predetonotion deoth 4-stroke engines Much lower priced fuel no rusty beerings commerciol fuel ovailoble Red-Mox Very low 900-1000 rmp relieble idle end easy hand starts con control ignition timing will stop pro-detonation engine will run mudi cooler develop moro power Now available coaletely shielded spark plug bed mad 90 plug cover Chosen TAG Mfg & Byron Originals foi its outateading reliability Send $100 price list newsletter ordering Box 1732 Riverton WY 82501 307 8576897 CH Electronics Inc PlC Video Tape Vol 1 Basics 115 minutes total running time great educattorial value recommended clubs hobbj shop ozuners. Model AviatIon Nov 1987 Only $1795 tax & shipping mci VISA M/C orders call 415 967-5134 Penn International Chemicals 943 Steirlin Rd Mt View CA 3 yr- - SMOOTH CONTOUR 1314 P43 1hz41/z 214514 WRAM SHOW88 1988 will once again present RC Plane Car Boat Show Yonkers Raceway mited parking Its 20th annual show its sure biggest ever years WRAM Show going largest yet Well over 150 manufacturers other eshibitors have already signed up bring everything thats new hobby . kits engines radios accessories everything between famous Swsp Shop will full operation thousands items including built-up planes cars boats almost new radios engines something just about everyone ADVANCED TICKET SALES Save time order tickets now send check money order made payable WRAM Inc allow 3 weeks check clearance selfaddressed stamped envelope Ed Alexis 21 Pamela Road Peekskill NY 10566 day Ticket Two day Ticket under 12 yrs day 4 ElF STATIC COMPETITION AIR models must operable RC controlled Trophies andlor prizes awarded VcRs awarded two categories Best-in-Show flying Best-inShow non-flying Top line Rc Systems 1st place category Trophies other winners wwi SCALE RC POATS FAST awi IMilSaIRI IMilItarRi POST SAwi SCALE RC BOATS Ison-elItarAl INon-MilitarAl PATTERN RACdRS R/ C OSATS SlANT SCAlE STANS-AFE SCALE ALS TIMERS RC CARS 1/12 scar JUN SR ESENTS RC CARS 1/10 scale SPORT RC CARS 110 scale SLIcERS anT atarI IIELCSPTERS tEST-INSRSW brtes mM imtO sue u space aaallabIty obtain pre-registration Static competi tion forms write include self-addressed stamped envelope Allen -Reinhardt 2 Douglas Drive Pleasanfville NY 10570 Judging takes place Sunday afternoon Entries accepted until 12 Noon Sunday Special admission area will provided both days static display con testants built-up models Registration models will start 530 am morning SWAP SHOP WRAMs Swap Shop has become major show attractions thousands individual items changing hands help eliminate registration crush Swap Shop will provide preregist rat ion forms receive forms send self-addressed stamped envelope John Isbisfer 4 Devon Rd Larchmont NY 10538 SPECIAL NOTE year will no restrictions number built-up models regis trant may place Swap Shop further jntormat/on write enclose self-addressed stamped envelope call Jerry Judge Nancy Road Brewster NY 10509 914-279-2727 WESTCHESTER RADIO AEROMODELERS INC 21/2D 10 AM 6 PM DIRECTIONS Are Eavlters eavawab Iucaeea Iv sausbeen wesrcresre Avunty alveg eastern yr Nartbbbufld side Sna Tar4 Slase TbasaE il-uni no baurt bail 4 Snevae aad ea 3rd ruStic Iurct Turv left lacer Tbrawavl taunece perk na area PROM THE ROSin 101 CanS Cdt 2 As let eruttia laSt sure rtgbt veneer eatalng assa number P-5 So fact both winning Scale Masters versions stopped moment approached really speaks quality Both Charlie Chambers P-s 1 Piper Cub Glen Roberts built indubitably among favorites championships once again models deserved plauditsand flier trophy op timism esprit de corps RC Soaring/Blakeslee Continued page 45 watch stopped plane touched down designated area field intent avoid timer judgment plane crossed line keep chase vehicles off road until ready roll definitely mis take short course tempted drivers push speed limit chasing fast-moving Sail plane start attempt What did contestants think modi fied rules after flying As things some liked some didnt contest seemed raise basic question about goal X-C generally called racing yet contests distance affair AMA rules encourage setting long courses lessens possibility outcome will de termined speed Perhaps term Racing should deleted rule book concept variable-length course has some merit used both FM rules fullscale Soaring events allows task closely match weather conditions Some points learned contest should consid ered 1 Some method keeping chase vehicles within speed limits paramount importance problem short courses can also problem X-C course 2 Use race start per current AMA rules Having chase vehicle ahead start line lessens initial motoring speeds 3 Make course long enough multi ple thermals required complete several reasons first discourage use Speed-type airplanes compound problem number above second lessen traffic first couple miles course third maintain Thermal-type concept versus all-out speed dash Please understand neither EISS nor self promoting rules changes event run experiment reported manner fliers interested X-C could evaluate what happened new book Dr Ferdinand Gale Dr Gale has flying models since 1934 retired aeromechanical engineer new book Aerody namic Design Radioguided Sailpianes like textbook Sailplaners anything Ive seen extremely comprehensive pretty much explains everything ever wanted know about designing Sailplanes list chapters 1 Elementary Aerodynamics 2 Airfoil 3 Wing 4 Fuselage 5 Empennages 6 Complete Sailplane 7 Longitudinal Static Sta bility 8 Lateral Static Stability 9 Maneuverabil ity 10 Tailless 11 Canard 12 Construction 13 Examples Problems 14 Problem Solu tiOns 15 Math Physics Refresher cover letter Dr Gale Ferdi prefers called gave good explanation book first glance book appears compli cated really follows sug gestion given Preface reading text very first page book written nontechnical modelers am sure will confused go through chapters order doing realizes wealth information usually spread dozens books Included 300 airfoils types flying modelsnot Sallplanes Along correct theoretical fundamentals might appeal mathematically clined designers like understand real reasons what happens Gliders can find lot data graphs practical design applications will help aeromodelers like design models scratch Ferdis book softcover printed both English Italianwith English left side page Italian right Its kind fun glance over Italian see express things Ferdi says American modelers can obtain book directly him sending $48 surface mall four six weeks $53 alr mail Personal checks international money orders welcome ad dress Dr Ferdinand Gale Via Marconi 10 28042 Baveno No Italy As PS Ferdis 1978 book Soarers still available him gives three-views dimen sions performance data 24 full-size Sailplanes extjnt time covers ships remain Scale favorites such Libelle Kestrel 17 ASW 19 21 ASK 21 Janus Nimbus 2 Cirrus 75 SB 10 Jantar HP-18 still valuable book Scale fana tics price $30 plus additional $5 air mail postage 1988 Nats news friend Flying Models magazine Soaring editor Herk Stokely sent letter some good info Soaring 88 Natsso thought youd like see end September first orga nizing meeting 1988 AMA Nats will held right Tidewater during last week July Needless say club will heavily involved management Soaring events fact appears will Event Director Soaring competition Well holding huge farm field about 10 miles Nats operations center Fentress Field field will probably shared Free Flight competition will mean well need lots room parking expecting about 125 Soaring pilots generating nearly 300 en tries due entering multiple events will four days flying Tuesday through Fri day awards banquet Friday evening Hope meet people Ive heard corresponded past come bring mosquito repellent has talk holding 89 Soaring 168 Model Aviation No 578 Schweizer 1-26B $1475 RC Quarter-Scale Sailplane spans 125 Two plan sheets No 579 Lockheed P-38 $1800 CL Precision Scale WW II fighter uses twin 45s spans 55 has operating Fowler flaps retracts throttle Three plan sheets No 580 Parnall Pixie FF Rubber Scale British biplane 112 scale spans 31V2 0 03 0 N N 0 Eo -5 e U zo e 00 o 0 tile 0 0 nil 0 2 3 C50 Ctsil 0 V sI C0 &. z0 Osil CIa U 00 l I 0r. a I STREET uv C 0 Stiletto CL Stont model McDonald winner 1976 1980 1982 FAI World Champs$375 Blue Birds RC Ken Willards formation plane 4-channel 10115 power$375 Crashmester CL Crash-proof trainer twa sizes15/30 35/40 power$125 1930 Fleet Biplane RC Sport Scale tar 35/40 4-channel Wingspan 56 /s Scale Two sheets$625 Drake II AC Ken Willards flying beat tar 3-channel 1 5-power Fly land removable gear$375 Taylor Cub RC Don Srslls Schoelyard-Scale tor 049s 2-3 channel Spans 50 in$350 Zephyr AC Small 2-channel glider tsr hand-launch tow thermal sinpe soaring$2130 Laser 200 RC Sport Scale replica championship Aerobatic tIler Uses 40 power 4-5 channel Two sheets$1075 ElectrIc Sparky AC Electric fun flier 05 motor 3-channel RC scaled-op 1930 mbber-pewer favorite$050 Cavalier AC Old-Timer-like new design has huge wing tar slow easy flights 35 pwr 3 ch Two sheets$1725 1/2A Miss America AC Old-Timer Texaco model 049 glow 2-channels$650 Sweet P30 FF Neat stick-and-tissue Outdoor Robber P-30-ciaao model contest-winner$200 Spectra AC Electric-power tor 05-size motor uses 3 different wings tar sport soaring aembaticsS700 440 AC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels$650 Blue Max II AC Fun-fly sportoter 40-size engines spans 52 Lightweight structure$790 Buttercup AC Cute elfin oportoter sues micro 2-ch AC poise-rudder Spans 27 in. tor 020/035 puwer$300 Weekender AC Low-wing sport tIler 20-sine 4-stroke engine spans 47 in5575 4-60 AC Dec Mathews great sport flier 00-size tour-stroker engine spans 70 Two sheets$1275 Playmate AC Sport fter 3 AC channels 15/25-size engines spans 50 in5650 Extra 230 AC Giant Scale acrobatic plane spans 0 ft uses Doadra engine Twe plan sheets$1650 Henry T AC Spertoner 2-3 channel AC spans 52 has adjustable wing ifapsS475 Comet Jr Clipper Plus 35% AC Old-Timer sportater tar engine 2-ch AC spans 40 in$650 Sorts Pitts AC Reminder-scale bipe 40/60 engines spans 43 two plan sheets$1050 NI-Tech 2002 AC Canard docted-fan tar 45 engines spans 30 Two sheets$1000 Swetlow AC Lightweight hotriogger 40-size tour-stroke engines spans 50 In8025 Terrible Coupe FF Itubber-poweruri Coupe dAiver spans 45 contest-winner$475 Cessna C-37 AC Schoolyard Scale famous 304 plane fur 040/10 power 2-oh spans 42 in$500 1938 Challenger AC /sA Texaco Old-Timer spans 47 tar 040 engine 2-channel AC$550 Atrix AC AMA Class 0 Sailplane spans 110 uses 4-channel AC systemS725 Simitar Slow-MotIon 15 AC Tailless flying wing fur 15 engines spans 60 uses 3-ch AC$350 Parakeet AC Sport biplane fur 15/25 engines 3-channel AC equipment spans 42 in$675 Heron AC Sill Winters spurt Electric tar gearud 075 motor 3 AC ch spans 65 in$575 Midget Mustang AC Sport Scale 40/46 tour-stroke engine spans 54 in$000 Cricket AC Sport scalelike 20-also two- four-stroke engine spans 40 in$675 Eaglet Il/Scresmin Eagles II AC Estra wing other parts conoert Goldberg Eaglet ke biplane5250 Skinny MInnie FF Indoor ROD Stick robber-power plane spans l6/e in$175 BC Airfolter FF Replica sf1046 deSuh Gas plane uses CO2 power spans 22 in$200 Super Doubler AC Sport AerobaticyPylon fur 40146 tour-stroke engine spans 57 in$575 Double Duty AC Basic/advanced trainer 10/15 engines spans either 67 59 iv Two plan sheets$1075 Avro Lancaster FF Rubber Scale bus 4 motors spans 51 Fabulous$650 Wildcat CL Sport prutile 35 engines spans 44 Foam wing$500 Sugar Pup AC Spurtoter tot 10/25 engine Foam wing spans 40 in$550 Low Voltsge AC Electric-power sportoter 035 motor spans 44 inS475 Fierce Arrow 66 CL Delta-wing StonIer 45 power spans 60 has 1200 sq areal Two sheets$1275 Wild Hare AC Tn-motor sportoter spans 63 uses 25 engines Two plan sheets$000 XB-35 CL Reminder-scale flying wing bomber tur two engines spans 47 in$575 AC AMA Class 8 2-Meter Sailplane has 70a/ein.5pan foam wing$725 ThunderbIrd 60 CL Big competition Stunter Tom Dixon fur 45161 engines sparu 61 in$000 Sea Loon AC Pod-and-boom seaplane fur 15 power spans 40 in$675 Ex-Cels 520 FF Campenilion plane spans 65 uses 325/34cc power carbun-hber construction$675 Junkera Ju 6435 Would-Be Scale WIN Il-era fighter spans 47 uses twin hA engines$375 Avro 560 FF Mini-electric Scale 23 Brdish ultralight spans 30 in$200 Electroatmak AC Electric aerobatic plane spans 44 uses 05 motor$550 Busy Bee FF Fee Wee-30 plane 02 power spans 30 hat either Oheet-balsa bsi0-xp surfaces$400 Voyager CL Sorta-Scale A-pawered vemion around-the-world plane spans 46 iv$225 TR-260 AC Sport Scale Aerobatic plane tor 4-otrake 60/00 power spans 66 in$1100 Pink Lady F-40 CL Bill Wisniewskis Formula 40 Speedster tar 40 puwer spasm 27 in$400 Square FF Competition plane Teleco CO2 power spans 22 in$200 ScorpIon 60 AC Fan-tip aembatic plane 60 power spans 58 in$1150 Serendlpltyt ndeer EZB record-bolder spans 17t/s in$325 HattlIte CL Combat plane has foam wing spans 30 in$225 Fcircie numbers plans wish orderI 193 414 490 528 547 557 565 573 239 440 499 531 549 558 566 574 262 447 506 533 550 559 567 575 310 454 512 534 551 560 568 576 314 457 514 535 552 561 569 577 326 460 521 539 554 562 570 578 332 465 522 541 555 563 571 579 Plan price includes first class postage US delivery Which Air Mail over 300 miles 386 478 525 544 556 564 572 580 orders outside US lease add $25U Air Mail $125 surface mail Ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr, Reston VA 22090 Please allow 3 6 Weeks delivery Please print carefullyEnclosed $ _______________________ I I I I World Championships East Coaxo witi Tidewater mentioned possible site FenErest Field would excellent location NaEs Soaring site no sod farm wil probably considered fairly rough mosi fliers good part thaE big enough thai can set up center section ano string winches direction People come Nato will discoves area called Tidewater 16 means hot humid part area heavily pop ulaEed mouquitoes Temperatures late July have running well nineties winds time year predominantly southwest very weak lift winds light well pick up sea breeze southeast about midday strong lift aboul 45 minutes very weak no lift resE day Soartech has too much publicity year am receiving too orders back sues just cant keep up demand printing setup have good doing 15 20 copies time seven issues com pleted now just seem making copies another weekend cut ting building flying time too much think Michael Selig produces airfoil-testing material Ill have initial print ing issue done commercially got letter Michael last week Because high level interest support project able get much capable sophisticated instrumentation initially planned Although will make re sults testing much reliable has also slowed down pretty significantly Mi chael says installation will completed November testing will begin ex pect will well past beginning 1988 before will able publish data Ive also talked David Fraser has providing much asaisoance instru mentation setup David said installation quite good should produce data very high quality have computerized dataacquisition system should speed up both test runs preparation data publication wish contact Michael Selig now Penn State University position allows him go Princeton work wind tunnel project wishes address Penn State Aero Engineering 233 Hammond Bldg University Park PA 16802 Thanks scoop Herk weather forecast holds up windwise 88 Nats will just opposite 87 Might time dig Out ol Windrifter Bob Dodgoon Thermal flying second part advice Bob gives kit purchasersthe essay included back building instructions Winduong Camano Pixy kits first part treatise last months colunm Take away Bob know lift climbing try varying thermal technique find better suited particular thermal Also quick recenter satisfied rate climb altitudes under 30 ft cant afford waste move So losing altitude thermal turn should probably stick times fly out bubble cant find again have altitude try Dont leave produc tive thermal turn especially low altitude general thermal will try turn plane away encounters lift quick 170 Model Aviation No 193 No 239 No 262 No 310 No 314 No 326 No 332 No 386 No 414 No 440 No 447 No 464 No 457 No 460 No 465 No 478 No 490 No 499 No 506 No 512 No 514 No 521 No 522 No 525 No 528 No 531 No 533 No 534 No 535 No 539 No 541 No 544 No 547 No 549 No 550 No 551 No 552 No 554 No 555 No 556 No 557 No 558 No 559 No 560 No 561 No 562 No 563 No 564 No 565 No 566 No 567 No 568 No 569 No 570 No 571 No 572 No 573 No 574 No 575 No 576 No 577 L STATE ______________________________________ ZIP _____________________________ force plane turn back lift may have try several different circle locations before centered thermal Some thermals have centers shift requiring recenter plane several times during ride upward stop climbing try find productive area thermal being careful lose cant better get out dying thermal quickly find other have altitude some occasions fixed area generating lift cant work well type thermal circling Sometimes wave action may produced wind after has blown over hill ridge har monic original air pattern caused bill rate smooth gentle flying min imal control input best way fly type lift weak smooth Fly large fiat turns figure eights stay lift area make few turns possible best type plane Thermal flying de pends upon skill level flier begin ners self-neutralizing polyhedral floater like Gentle Lady good choice As skills increase versatile higher-performance Glid ers called Gliders top Thermal performance scale respective size classes opinion multichannel solid-corewing Windsong represents pinnacle present-day Thermaling machinery 134-in-span plane undercambered Ep pIer 214 alrfoil can float Out air times best polyhedral floaters large enough see fly smoothly great distances has highspeed capabilitythe entire trailing edge reflexes reduce airfoil camber LID coefficient highest ever seen Thermal Dura tion Glider allowing cover much sky possible thermal search pattern coming home Any edge over competition performance Glider point will have favor Having best plane however will little good have mastered ship sophisticated Glider better flier must order harness higher capa bility Become familiar Glider feels like extension yourself shouldnt have think about mechanics flying frees mind help fly lift opportunity almost instinct Thermal ing skills increase Perhaps thing really separates great Thermal fliers OK Thermal fliers ability immediately recognize stay thermal recenter leave times have seen gaggle fliers slowly circling ground air contained thermal minutes before smart fliers left thermal break ing up quickly decisively went search another still high enough thus saving flights great Thermaler encounters sink will recognize immediately will waste pre cious altitude floundering hardest things sink reflex wing trailing edge push Down elevator thus increase apparent sink rate get plane moving fast can fly Out sink quickly possible Fly anywherejust get out down air Whatever though retrace flight path fly through same down air have just flown Anything better Great Thermal fliers decisive smooth attentive can work air within range half mile speeding out sink maximizing form lift great Ther mal flier expects get time whenever goes up doesnt give up until ground Climbing out 15 ft un common feat skilled Thermaler final approach elsewhere common site see great Thermalers like Dave Banks thermal Windsong out hand-toss Once have basic skills best Thermaling machine fly can spend life time improving Thermaling skills will learn work lift could work year beforeor week before will find decision-making improving can now salvage max flights out air eating everyone else alive thrill Thermal compe tition flying no end far can go flight totally new challenge optimized person best optimizes flight opportunity wins contests personal growth Thermal ing skill ultimate ever-new thrill joy Soaring want thank Bob Dodgson permitting piece reprinted column As sald last month think good stuff should made available Sailpianers Bobs final paragraph especially relevant ex presses what hobby/sport about 1988 Segelfiug Bildkalender Most Sailplaners know about Sailplane Picturecalendar im ported Germany has beautiful color pic tures full-size Glider activity matted framed 12 monthly pictures make swell contest awards 88 price $1350 plus $350 UPS postage $450 Canada Get yours Aero Smithing 4420 Darventry Court Charlotte NC 28226 phone 704 365-0621 172 Model Aviation