Radio Control Scale Bob Dolly Wischer PARIS FAI MEETING annual trek Paris rules technical specifications finished brought back some rather astonishing re suits years have heard lament US competitors FAI model specifica tions too restrictive particularly engine displacements generally agreed day single 60 two-stroke engine Scale model long since thing past yet FAI rule book persisted upper limit restraining limit imposed originally because suspected unreliability earlier radio equipment because general regard safety days models could lethal missiles hands novice pilots Actually some conditions may continue exist has become increasingly apparent old restrictions somewhat antiquated stifling competition Scale Subcommittee members come realize engine size model now probably never truly limiting factor reference engine displacement being eliminated FAI RC Scale rules beginning January 1988 Total flying weight model dummy pilot fuel has now increased six kilograms seven kilograms 1543 lb becomes true limiting factor example seven-kilogram airplane four engines displacing three cubic inches couldnt exist because engines alone would over weight limit elimination engine dis placement limit first proposed mid-1986 Mick Reeves England really no hope such proposal slight chance acceptance because basic FAI rules state spe cifically limits must placed everything order aircraft qualify model now recognized underpowered model truly unsafe fly prone accident recent past have aircraft flown World Championships marginal weight Large models built up weight limit primarily because large size has pronounced beneficial effect scalelike flight Two other limits continue imposed total horizontal area wing plus stabilizer now increased 250 square decimeters 269 sq ftwhich very large indeed necessary increase area order accommodate new Latest masterpiece Merritt Zimmerman this-scaie deHavilland 60 Moth powered fantastic handmade scaieCirrus engine 45 Cu dispiacement modei scratch-buiit inciuding tires lathe-turned soiid rubber weighs 26 ib Fuseiage piywood prototype wings taii covered Coverite Antique Soild rubber type used punch-press cushions Ailan Cooks Zippy SportL uitraiight is1/-scaie weighs oniy5 ib Engine OS 60 four-stroker Finish isCoverite Biack Baron fiim paint atest Eiectric piane Keith Shaw Ziin 526 R having 68-in span weightof oniy7 lb Power isan Astro cobaiteo 24-1200 mAh ceiis prop 12 x 9 turns 9500 rpm Scaie pliot Shaw iook-aiikel 44 Model Aviation Aibert Straubs Osprey Ii built 1/B scaic Structure spruce baisa Fabricote wings Fuselage covered giass cloth epoxy Engine 40 weight limit would have exceeding safe wing loadings second limitation maximum wing loading 100 grams per square decimeter 3277 oz per sq ft total horizontal area wing plus stab World Championship experi ence have never seen specification checked contest officials take word competitor model meets specs ac tual practice model weight area must given specification certificate wit nessed US AMA Contest Director day strategically built model take full advantage overly generous complexity bonus system supposedly comes end January 1988 date actually July 1987 contenders US Scale team selection program precedes Lincoln Nats schedule bonuses has reduced now very unlikely anyone can reach 20% maximum bonus limit multiengine models will now held down 15% remains exception new schedule tail-dragger triplane 20% airplane modem radio control triplane no complex build operate other con figurations probably doesnt deserve high bonus can see some con troversy continues exist present revision bonus system compromise will need further debate amongst national aero clubs subject complexity models itself has hidden complexities example truly complex aircraft may immense multi-engine type wealth detail both exterior interior Building monstrosity large weight limit permits find detail becomes such small size almost impossible reproduce model complex sub ject actually becomes simple rendtion cause great reduction size Would anyone like estimate what happens static score such aircraft now know experience its low static score defi nite detriment constestant still faced prospect having fly /16-scale monster something remotely approaching scale speed scalelike maneuvering prob lem goes back team selection ten dency judges swept enthusiasm multi-engine model meets noticeable indifference performs World Championship unreasonable expect judges unemotional awarding scores effect emotional judging will some what diminished future World Championships introduction new rule high low flight scores will deleted rule actu ally intended help eliminate national bias judging course result judges emotional tendency see great merit coun trymans performance Deletion high low scores tried first time Giant Sport Scale classes Scale Nats 1986 Lake Charles really successful judges need separated some distance suggested Paris meeting flight judges separated avoid conversation Consistency flight will rewarded decision revise scoring system averaging two best flight scores past pos sible single lucky flight made under ideal weather wind conditions endow con testant unbeatable score World Cham pionships have won lost because luck factor rule change will help mini mize chance element success World Championships also won lost takeoff landing maneuvers K Continued page 143 U Lets enjoy outdoors ort 9 jjj%Your Little World Comfort Hot Burning Summer Days Convenient Size Portable Shade Thats Ouick Set up Change instantly Give Protection Weather Size 72 s120 60 sq ft Add units double triple etc size PortsShade available Add units can used trailer awnings patio covers etc PortaShade convenient size has no center pole useable space can straddle picnic table model airplane small vehicle canopy strong heat reflecting waterproof material white top side unique tear proof corner fittings no grommets stands almost 7 tall strong 1 aluminum poles can stand work play under comfort wind resistant ed 40 MPH PortsShade very last easy install beach picnic mountains anywhere want protection elements Set up very quick person can about 5 minutes can adjusted easily tilt against sun can set up vertically windbreak Master CardVisaMoney OrdersChecks Dealer Inquiries Invited 4M Co Dept M N Shawnee Sportsman Model/PFR4-60 $3995 PS y OK 74029 Economy Model/EPFR4-60 $3295 PS UW Phone 918-534-2244 August 1987 45 Three indispensable references for only modelers . shown Two large volumes Approx 800 photos new color Large format 300 plus phof os nearly 100 defaifed shots us seo 2 4 large color prints aces 3-views uS$4oincludingpostandabeautifulwallchart aircraft Bank authorized check 1MG please color Bank authorized check 1MG please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenong 3175 VictorIa Australia U OPS Special plug U control free flight RC boats high nitro use$290 OPS RC-250 plug RC engines out tuned pipes 09 60 size $400 RC-300 spectatular RC plug ducted fans piped pattern engines racing boats RC cars. $450 OPS Glow Plugs Are Available Local Hobby Shop TX Setupprises pleasant ones Continued page 139 correct transmitter setup par ticular model about flown method use recommend make up reasonably accurate drawings of transmitter control panels showing ALL preset switches potentiometers pots draw ings make several reduced-sized photo copies put together small booklet transmitter happy programming transmitter particular plane dedicate page booklet model Mark carefully position switch pot date label page way have accurate reference can carry right flight box can say good-bye attempts rely memory twenty-three adjustments Also may find seeing booklet flight box sometimes serves remind transmitter needs resetting before starting fly related problem became apparent making transmitter sketches Some pots used RC equipment have pointer index mark visible just screwdriver slot unfortunately makes actual setting pot am biguous see fig 1 instance servothrow pots World Engines Expert Mk 9 transmitter dual-rate presets Airtronics CS7P type controls seems essential index mark some kind provided Make center mark pot using indelible marker dab paint using setup guide will have reference point Figure 2 shows drawings used two transmitters mentioned above combined onto sheet save money photocopying cut apart make separate booklets Happy flyingand may sur Call Parts Peopof PO BOX 26247 New Orleans LA 70186 00-535-2568 RC Scale/Wischers Continued page 45 factors 10 nine effort make high point spot landing within 35-meter circle has spoiled otherwise high-scoring flights e pecially gusty wind conditions necessaiy plan approach model landed across widest part circle gain full advantage competition often deteriorated spot landing contest far demonstration scalelike flight Special effort hit circle spoiled landings improve quality landings de cided change 35-meter circle space marked parallel lines across runway placed 100 meters 328 ft apart landing will now graded quality alone should possible contestants touch down within highK- factor landing zone pilot now also has choice direction taxi takeoff landing eliminates need land across narrow runway wind no run-out space because rough ground conditons along runway boundaries Contestants formerly permitted two tempts official flight abuse privilege led time delays between flights attempt called contestant lost position flight order moved end round reason existence attempt permit second chance com plete flight case engine radio trouble either ground within first 60 seconds flight current reliability com ponents really no valid reason continue practice compensate loss tempt contestant now permitted seven minutes connection glow plug until takeoff 14 minutes total flight time additional minute extra engine Some abuses old attempt rule quite flagrant contestant didnt like wind velocity direction time asked perform attempt called sumption weather conditions would liking rounds end rule also applied Nats FAI flights con testant used so-called faulty plug wasnt excuse make final flight meet wind diminished high score flight finished first place Some would call gamesmanship another name 1986 Oslo Scale World Championship too attempts called trivial reasons result flight time seri ously prolonged Such bending rules team individual gain now terminated On-board ignition June column mention scheme install switch glow battery model heat engines August 1987 143 Its Time Put Plug 1D37 W TI. i h KIT ONLY $895 - - PKE MODELS REAM V 30 ULVI - MANY HARD TO FIND ITEMS FOR RUBBER MODELS -- ceaPL1rEcd4Lu$2ee~ Peck-PeIpmes -7 J BOX 2498 -MA LA MESA CA 92044 E 16191 448-IBIS R RIC PRODUCTS PLUGIN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket $695 TRANSMITTER CASE An inexpensive tugged molded case prorect expensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim arid locking clasp S 1895 WING TUBE & SOCKETS Alumsxjm alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size mudels 7l8diax2S 895 Ii/diax2$995 li/s diax3$2495 feather Ilte glass cloth 7 ozI sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions SS95 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily out damage new 60s 17MM rear bearings ASleeve Puller$ 795 Bearing Puller$ 695 BnthFor$1395 IVANS MAGIC GADGET prctrac device used Ivan Kristensen acoirately measure aileron elevator rudder throw Takes iess work out trimming out airplane qiality tool complete instructions log book canying case5795 NEWI WING MOUNTING SET wing mounting system developed Ron Chidgey fast neat accixate stays tight Three nylon brackets saews machined wood wing blocks included S 595 glow plug low throttle systems always needed extra switch breaking Circuit battery safeguard against inadvertently turning off receiver switch throttle closed such case switch glow plug quickly kills battery Joe Utasi Jomar Products Corp has devised On-Board Power Switch eliminates requirement external switch Its small circuit board about x aining circuitry MOSFET transistor will switch glow plug off desired point throttle servo travel either receiver transmitter switched off Power Switch deactivates connection between battery glow plug small potentiometer board adjustment point power applied plug load limit live amperes heat sink MOSFET heat sink avail able Radio Shack can used loads over five ampsto operate two glow plugs exam ple Power Switch can also used separate receiver channel switching appli cation such smoke system pump landing lights video camera us involved Scale models recognize vast difference value between aircraft average sport model differ ence largely effort expended during construc tion finishing may 10 times great receiver battery pack dies flight have lot lose Jomar Products has Solid State Battery Backer will switch second set batteries main pack drops below safe voltage can used model capable carrying extra weight another four-cell pack cells can capac ity Paris Hobby Show As always arrival Paris annual trip several days early recover symptoms jet lag year visit coincided Paris Hobby Show held large complex exhibition buildings southern fringes city Exposition Park attended show expecting find French equivalent Toledo admission fee first large difference encountered equivalent about $7 show completely contained building about 400 ft square expected find display superior French Scale models Actually really fine example RC Scale McDonnell Douglas F-IS Eagle Philip Avonds come Belgium model equipped US-made K&B 75 engines Turbax fans French modelers apparently reluc tant dispaly aircraft highest quality Near Scale area large rectangular space surrounded coarse netting extended upward almost high ceiling Within enclosure model Helicopters being flown indoors apparent ventilation using standard two-stroke model engines space also flying site rubber-powered Peanut Scale models often ended flights becoming enmeshed four-inch-square open sngs net Retrieval wasnt easy requiring ladders long poles major disappointment airplane ac cessories manufacturers exhibits absence display Kavans new 55-pound-thrust gas turbine exhibits hobby dealers rather manufacturers distinct difference between Paris show what normally seen Toledo As might expected Europe greatest portion displays radio-controlled surface vehicles rather aircraft Much interest centered about large serpentine track model race cars again using standard two-stroke engines methanol fuel Exhaust smoke noise pervaded region Electrically driven cars shared track As US model cars extremely popular France display couple immense semi-trailer trucks about six seven feet length highly detailed excellent finish powered two-stroke 60-size engines mov ing van type tanker large open area show center occu pied live steam model railroad track about 45- 5-in gauge freight train rounding circuit radio controlled no way us determine channels being used operation suspect throttle operator could have bit uneasy about range problems because usually walked alongside locomotive pall smoke hov ered over exhibit partially contributed A-scale steam engine appeared driving French equivalent threshing machine About third hobby show devoted model railroads enjoy overwhelming popu larity Europe compared model air craft Another large portion included surface craft boats cars Boats operated im mense lake contained plastic-lined tank Four days after return Paris Toledo direct comparison between two shows US Scale modelers fortunate indeed Any dozens Scale models displayed Toledo would have received top interest Paris show nothing compare Merritt Zimmermans prize-winning deHavilland 60 Moth its handmade four-cylinder fourstroke Cirrus engine no doubt minds top-quality models exist France WV BEGINNER RACES 3J 0-500 * FORM-i FAt lid ructions c Club Programs NORTH EAST PYLON RACING ORGANIZATION 1l9 Informatlob Contact DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 A RACE NORTHEAST AREA 144 Model Aviation An new Tiger Tail 120 four strokes pipeo oci two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area -860 sq Complete Delus Kit$15995 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 ox * 595 Kwik Set 6 Minute 10028 995 Giont Kwik Set 6 Minute 16 ox *1 395 Half Fast 10 Minute 10028 895 GMP AIRCRAFT INSTRUMENTS 80 3116114318112$ 149 40 3/4 inch $ 149 EASY OFF PULLER rhe proper tool removing drive washeraand flywheels* 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 513 385-7398 00 sO yew dodee order heel Poet odd $150 See Dealer Order Direct Include $2 Per Item UPS GATOR RIC PRODUCTS 3723 Pompano Dr Pensacola FL 32514 1 476-8639 didnt appear exhibit Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Soaring/Blakeslee Continued page 47 Flying 205Part 2 continuation article written Larry Jolly began last months issue youre still thermal left last month models probably getting pretty high Lets think about before leave thermal remember Thomburgs rule know always leave exit thermal back side Thats because since sink follows lift want get flying start scoot through patches bad air let Sailplane come wind commence circle down wind reach back side circle turn nose wind give opposite rudder aircrafts nose now pointed wind hopefully back field Note leave Up elevator trim transmitter alone model will now begin porpoise because must reduce angular difference decalage between wing stabilizer allow model cruise very important bring elevator trim back neutral can cover maximum amount real estate enabling reach next thermal common pitfalls area per formance too much Up trim causing model lose energy its climbs dives other extreme too much Down trim causing over-diving reason use 205 because its excellent L/D lfi-to-drag ratio editor too much compromise other areas airfoil performance Observe tendency airfoil show its point maximum L/D carefully applying Down trim click time will able see point model exhibits its best ground-covering ten dencies click model just builds up speed L/D goes trash have read article point should able summarize follows 1 must build true model maximum performance 2 must fly model observe iden tify two major points its performance curve first point amount tailplane deflection will need best climb performance ther mal second point tailplane setting will give maximum glide angle Matcnea rrmanu TOPFORMAIdL K&B ENGINtS AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER POXY PRIMER K&B SUPER FOXY FAINT K&B MIXING CUPS brief summary essence arti cle point did forget tell maximum climb position elevator trim also position will yield highest tow During normal contest flight check elevator trim properly set healthy toss will ensure model reaches necessary flying speed will need case have line break zoom-launch will find necessary hold excessive Down stick during actual zoom overcome Up trim Once launch com plete immediately trim maximum cruise lift encountered trim maximum climb Several have already figured out basically fly elevator two trim modes true reason efficiency figure aircraft has much potential energy maximum its its launch height force gravity given condition thingother atmospheric conditionsthat will bring model down faster-than-expected rate creasing its drag control deflection causes drag important Sailplane will exhibit specific behavior given tailplane setting have observed model carefully remember way behaves will have basis make in-flight judgments Instance youre maximum cruise mode suddenly models tail raises its speed creases Now know didnt give model elevator command can pretty well guess model has entered better air about start climbing basis decision-making extremely important contest pilot following part article landing dont want pass up because us know modern Sailplane contests won ground times have seen guys come smoking through landing cir cle cartwheeling model hitting timer bad luck no matter much might complain blown approach yields very predictable blown landing Lets launch 205-equipped Sailplane again Thats good amount line tension Now throw model As model climbs pull some Upstretch line As start round over top some pulsing winch pedal could prove prudent Now let off Up elevator tap winch last timehard pull Up elevator get off winch pedal same time may need little Down round over top glide guys launching much better started Now lets concentrate landing thing hope currently have some sort Continued page 148 1000 ToOls FREE Catalog MicroMark, Small Tool Speolahala ii paula munnaur louIs palall find idaMaaiq WhaM mar maw MICIOMARK catalog Mny tools brd-lo-IInd . HUGE DISCOUNTS No narelaing hue stare Now nueptlalag pan toed s clone pour malibu Ssoo tIme save memyl 0I 20 use thin coupon send name address Micro-Mark Box 5112-39624 E Main SI Clinton NJ 08809 I I carearnrt...aI L O,r,de USA edS2OOtoArMapoVg I 3 PRICE 299 379 479 689 989 SLRItY 11/LI THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 12B6/z778 13677/s8 146778 1567 16878 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION lOTO 2O/e INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 5/a34149 634149 72833456179 833/,4568189 845881/a199 9456677/e199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 11/67239 124W279 125W279 1256279 1356349 1456459 1556659 1641/aN969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/aN279 84 6/,7/a78 299 SERIES 400C 8 6/a677/a7289 977/a7289 *W WIDE BLADE EW EXTRA WIDE N NARROW August 1987 145 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE
Edition: Model Aviation - 1987/08
Page Numbers: 44, 45, 143, 144, 145
Radio Control Scale Bob Dolly Wischer PARIS FAI MEETING annual trek Paris rules technical specifications finished brought back some rather astonishing re suits years have heard lament US competitors FAI model specifica tions too restrictive particularly engine displacements generally agreed day single 60 two-stroke engine Scale model long since thing past yet FAI rule book persisted upper limit restraining limit imposed originally because suspected unreliability earlier radio equipment because general regard safety days models could lethal missiles hands novice pilots Actually some conditions may continue exist has become increasingly apparent old restrictions somewhat antiquated stifling competition Scale Subcommittee members come realize engine size model now probably never truly limiting factor reference engine displacement being eliminated FAI RC Scale rules beginning January 1988 Total flying weight model dummy pilot fuel has now increased six kilograms seven kilograms 1543 lb becomes true limiting factor example seven-kilogram airplane four engines displacing three cubic inches couldnt exist because engines alone would over weight limit elimination engine dis placement limit first proposed mid-1986 Mick Reeves England really no hope such proposal slight chance acceptance because basic FAI rules state spe cifically limits must placed everything order aircraft qualify model now recognized underpowered model truly unsafe fly prone accident recent past have aircraft flown World Championships marginal weight Large models built up weight limit primarily because large size has pronounced beneficial effect scalelike flight Two other limits continue imposed total horizontal area wing plus stabilizer now increased 250 square decimeters 269 sq ftwhich very large indeed necessary increase area order accommodate new Latest masterpiece Merritt Zimmerman this-scaie deHavilland 60 Moth powered fantastic handmade scaieCirrus engine 45 Cu dispiacement modei scratch-buiit inciuding tires lathe-turned soiid rubber weighs 26 ib Fuseiage piywood prototype wings taii covered Coverite Antique Soild rubber type used punch-press cushions Ailan Cooks Zippy SportL uitraiight is1/-scaie weighs oniy5 ib Engine OS 60 four-stroker Finish isCoverite Biack Baron fiim paint atest Eiectric piane Keith Shaw Ziin 526 R having 68-in span weightof oniy7 lb Power isan Astro cobaiteo 24-1200 mAh ceiis prop 12 x 9 turns 9500 rpm Scaie pliot Shaw iook-aiikel 44 Model Aviation Aibert Straubs Osprey Ii built 1/B scaic Structure spruce baisa Fabricote wings Fuselage covered giass cloth epoxy Engine 40 weight limit would have exceeding safe wing loadings second limitation maximum wing loading 100 grams per square decimeter 3277 oz per sq ft total horizontal area wing plus stab World Championship experi ence have never seen specification checked contest officials take word competitor model meets specs ac tual practice model weight area must given specification certificate wit nessed US AMA Contest Director day strategically built model take full advantage overly generous complexity bonus system supposedly comes end January 1988 date actually July 1987 contenders US Scale team selection program precedes Lincoln Nats schedule bonuses has reduced now very unlikely anyone can reach 20% maximum bonus limit multiengine models will now held down 15% remains exception new schedule tail-dragger triplane 20% airplane modem radio control triplane no complex build operate other con figurations probably doesnt deserve high bonus can see some con troversy continues exist present revision bonus system compromise will need further debate amongst national aero clubs subject complexity models itself has hidden complexities example truly complex aircraft may immense multi-engine type wealth detail both exterior interior Building monstrosity large weight limit permits find detail becomes such small size almost impossible reproduce model complex sub ject actually becomes simple rendtion cause great reduction size Would anyone like estimate what happens static score such aircraft now know experience its low static score defi nite detriment constestant still faced prospect having fly /16-scale monster something remotely approaching scale speed scalelike maneuvering prob lem goes back team selection ten dency judges swept enthusiasm multi-engine model meets noticeable indifference performs World Championship unreasonable expect judges unemotional awarding scores effect emotional judging will some what diminished future World Championships introduction new rule high low flight scores will deleted rule actu ally intended help eliminate national bias judging course result judges emotional tendency see great merit coun trymans performance Deletion high low scores tried first time Giant Sport Scale classes Scale Nats 1986 Lake Charles really successful judges need separated some distance suggested Paris meeting flight judges separated avoid conversation Consistency flight will rewarded decision revise scoring system averaging two best flight scores past pos sible single lucky flight made under ideal weather wind conditions endow con testant unbeatable score World Cham pionships have won lost because luck factor rule change will help mini mize chance element success World Championships also won lost takeoff landing maneuvers K Continued page 143 U Lets enjoy outdoors ort 9 jjj%Your Little World Comfort Hot Burning Summer Days Convenient Size Portable Shade Thats Ouick Set up Change instantly Give Protection Weather Size 72 s120 60 sq ft Add units double triple etc size PortsShade available Add units can used trailer awnings patio covers etc PortaShade convenient size has no center pole useable space can straddle picnic table model airplane small vehicle canopy strong heat reflecting waterproof material white top side unique tear proof corner fittings no grommets stands almost 7 tall strong 1 aluminum poles can stand work play under comfort wind resistant ed 40 MPH PortsShade very last easy install beach picnic mountains anywhere want protection elements Set up very quick person can about 5 minutes can adjusted easily tilt against sun can set up vertically windbreak Master CardVisaMoney OrdersChecks Dealer Inquiries Invited 4M Co Dept M N Shawnee Sportsman Model/PFR4-60 $3995 PS y OK 74029 Economy Model/EPFR4-60 $3295 PS UW Phone 918-534-2244 August 1987 45 Three indispensable references for only modelers . shown Two large volumes Approx 800 photos new color Large format 300 plus phof os nearly 100 defaifed shots us seo 2 4 large color prints aces 3-views uS$4oincludingpostandabeautifulwallchart aircraft Bank authorized check 1MG please color Bank authorized check 1MG please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenong 3175 VictorIa Australia U OPS Special plug U control free flight RC boats high nitro use$290 OPS RC-250 plug RC engines out tuned pipes 09 60 size $400 RC-300 spectatular RC plug ducted fans piped pattern engines racing boats RC cars. $450 OPS Glow Plugs Are Available Local Hobby Shop TX Setupprises pleasant ones Continued page 139 correct transmitter setup par ticular model about flown method use recommend make up reasonably accurate drawings of transmitter control panels showing ALL preset switches potentiometers pots draw ings make several reduced-sized photo copies put together small booklet transmitter happy programming transmitter particular plane dedicate page booklet model Mark carefully position switch pot date label page way have accurate reference can carry right flight box can say good-bye attempts rely memory twenty-three adjustments Also may find seeing booklet flight box sometimes serves remind transmitter needs resetting before starting fly related problem became apparent making transmitter sketches Some pots used RC equipment have pointer index mark visible just screwdriver slot unfortunately makes actual setting pot am biguous see fig 1 instance servothrow pots World Engines Expert Mk 9 transmitter dual-rate presets Airtronics CS7P type controls seems essential index mark some kind provided Make center mark pot using indelible marker dab paint using setup guide will have reference point Figure 2 shows drawings used two transmitters mentioned above combined onto sheet save money photocopying cut apart make separate booklets Happy flyingand may sur Call Parts Peopof PO BOX 26247 New Orleans LA 70186 00-535-2568 RC Scale/Wischers Continued page 45 factors 10 nine effort make high point spot landing within 35-meter circle has spoiled otherwise high-scoring flights e pecially gusty wind conditions necessaiy plan approach model landed across widest part circle gain full advantage competition often deteriorated spot landing contest far demonstration scalelike flight Special effort hit circle spoiled landings improve quality landings de cided change 35-meter circle space marked parallel lines across runway placed 100 meters 328 ft apart landing will now graded quality alone should possible contestants touch down within highK- factor landing zone pilot now also has choice direction taxi takeoff landing eliminates need land across narrow runway wind no run-out space because rough ground conditons along runway boundaries Contestants formerly permitted two tempts official flight abuse privilege led time delays between flights attempt called contestant lost position flight order moved end round reason existence attempt permit second chance com plete flight case engine radio trouble either ground within first 60 seconds flight current reliability com ponents really no valid reason continue practice compensate loss tempt contestant now permitted seven minutes connection glow plug until takeoff 14 minutes total flight time additional minute extra engine Some abuses old attempt rule quite flagrant contestant didnt like wind velocity direction time asked perform attempt called sumption weather conditions would liking rounds end rule also applied Nats FAI flights con testant used so-called faulty plug wasnt excuse make final flight meet wind diminished high score flight finished first place Some would call gamesmanship another name 1986 Oslo Scale World Championship too attempts called trivial reasons result flight time seri ously prolonged Such bending rules team individual gain now terminated On-board ignition June column mention scheme install switch glow battery model heat engines August 1987 143 Its Time Put Plug 1D37 W TI. i h KIT ONLY $895 - - PKE MODELS REAM V 30 ULVI - MANY HARD TO FIND ITEMS FOR RUBBER MODELS -- ceaPL1rEcd4Lu$2ee~ Peck-PeIpmes -7 J BOX 2498 -MA LA MESA CA 92044 E 16191 448-IBIS R RIC PRODUCTS PLUGIN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket $695 TRANSMITTER CASE An inexpensive tugged molded case prorect expensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim arid locking clasp S 1895 WING TUBE & SOCKETS Alumsxjm alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size mudels 7l8diax2S 895 Ii/diax2$995 li/s diax3$2495 feather Ilte glass cloth 7 ozI sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions SS95 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily out damage new 60s 17MM rear bearings ASleeve Puller$ 795 Bearing Puller$ 695 BnthFor$1395 IVANS MAGIC GADGET prctrac device used Ivan Kristensen acoirately measure aileron elevator rudder throw Takes iess work out trimming out airplane qiality tool complete instructions log book canying case5795 NEWI WING MOUNTING SET wing mounting system developed Ron Chidgey fast neat accixate stays tight Three nylon brackets saews machined wood wing blocks included S 595 glow plug low throttle systems always needed extra switch breaking Circuit battery safeguard against inadvertently turning off receiver switch throttle closed such case switch glow plug quickly kills battery Joe Utasi Jomar Products Corp has devised On-Board Power Switch eliminates requirement external switch Its small circuit board about x aining circuitry MOSFET transistor will switch glow plug off desired point throttle servo travel either receiver transmitter switched off Power Switch deactivates connection between battery glow plug small potentiometer board adjustment point power applied plug load limit live amperes heat sink MOSFET heat sink avail able Radio Shack can used loads over five ampsto operate two glow plugs exam ple Power Switch can also used separate receiver channel switching appli cation such smoke system pump landing lights video camera us involved Scale models recognize vast difference value between aircraft average sport model differ ence largely effort expended during construc tion finishing may 10 times great receiver battery pack dies flight have lot lose Jomar Products has Solid State Battery Backer will switch second set batteries main pack drops below safe voltage can used model capable carrying extra weight another four-cell pack cells can capac ity Paris Hobby Show As always arrival Paris annual trip several days early recover symptoms jet lag year visit coincided Paris Hobby Show held large complex exhibition buildings southern fringes city Exposition Park attended show expecting find French equivalent Toledo admission fee first large difference encountered equivalent about $7 show completely contained building about 400 ft square expected find display superior French Scale models Actually really fine example RC Scale McDonnell Douglas F-IS Eagle Philip Avonds come Belgium model equipped US-made K&B 75 engines Turbax fans French modelers apparently reluc tant dispaly aircraft highest quality Near Scale area large rectangular space surrounded coarse netting extended upward almost high ceiling Within enclosure model Helicopters being flown indoors apparent ventilation using standard two-stroke model engines space also flying site rubber-powered Peanut Scale models often ended flights becoming enmeshed four-inch-square open sngs net Retrieval wasnt easy requiring ladders long poles major disappointment airplane ac cessories manufacturers exhibits absence display Kavans new 55-pound-thrust gas turbine exhibits hobby dealers rather manufacturers distinct difference between Paris show what normally seen Toledo As might expected Europe greatest portion displays radio-controlled surface vehicles rather aircraft Much interest centered about large serpentine track model race cars again using standard two-stroke engines methanol fuel Exhaust smoke noise pervaded region Electrically driven cars shared track As US model cars extremely popular France display couple immense semi-trailer trucks about six seven feet length highly detailed excellent finish powered two-stroke 60-size engines mov ing van type tanker large open area show center occu pied live steam model railroad track about 45- 5-in gauge freight train rounding circuit radio controlled no way us determine channels being used operation suspect throttle operator could have bit uneasy about range problems because usually walked alongside locomotive pall smoke hov ered over exhibit partially contributed A-scale steam engine appeared driving French equivalent threshing machine About third hobby show devoted model railroads enjoy overwhelming popu larity Europe compared model air craft Another large portion included surface craft boats cars Boats operated im mense lake contained plastic-lined tank Four days after return Paris Toledo direct comparison between two shows US Scale modelers fortunate indeed Any dozens Scale models displayed Toledo would have received top interest Paris show nothing compare Merritt Zimmermans prize-winning deHavilland 60 Moth its handmade four-cylinder fourstroke Cirrus engine no doubt minds top-quality models exist France WV BEGINNER RACES 3J 0-500 * FORM-i FAt lid ructions c Club Programs NORTH EAST PYLON RACING ORGANIZATION 1l9 Informatlob Contact DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 A RACE NORTHEAST AREA 144 Model Aviation An new Tiger Tail 120 four strokes pipeo oci two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area -860 sq Complete Delus Kit$15995 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 ox * 595 Kwik Set 6 Minute 10028 995 Giont Kwik Set 6 Minute 16 ox *1 395 Half Fast 10 Minute 10028 895 GMP AIRCRAFT INSTRUMENTS 80 3116114318112$ 149 40 3/4 inch $ 149 EASY OFF PULLER rhe proper tool removing drive washeraand flywheels* 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 513 385-7398 00 sO yew dodee order heel Poet odd $150 See Dealer Order Direct Include $2 Per Item UPS GATOR RIC PRODUCTS 3723 Pompano Dr Pensacola FL 32514 1 476-8639 didnt appear exhibit Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Soaring/Blakeslee Continued page 47 Flying 205Part 2 continuation article written Larry Jolly began last months issue youre still thermal left last month models probably getting pretty high Lets think about before leave thermal remember Thomburgs rule know always leave exit thermal back side Thats because since sink follows lift want get flying start scoot through patches bad air let Sailplane come wind commence circle down wind reach back side circle turn nose wind give opposite rudder aircrafts nose now pointed wind hopefully back field Note leave Up elevator trim transmitter alone model will now begin porpoise because must reduce angular difference decalage between wing stabilizer allow model cruise very important bring elevator trim back neutral can cover maximum amount real estate enabling reach next thermal common pitfalls area per formance too much Up trim causing model lose energy its climbs dives other extreme too much Down trim causing over-diving reason use 205 because its excellent L/D lfi-to-drag ratio editor too much compromise other areas airfoil performance Observe tendency airfoil show its point maximum L/D carefully applying Down trim click time will able see point model exhibits its best ground-covering ten dencies click model just builds up speed L/D goes trash have read article point should able summarize follows 1 must build true model maximum performance 2 must fly model observe iden tify two major points its performance curve first point amount tailplane deflection will need best climb performance ther mal second point tailplane setting will give maximum glide angle Matcnea rrmanu TOPFORMAIdL K&B ENGINtS AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER POXY PRIMER K&B SUPER FOXY FAINT K&B MIXING CUPS brief summary essence arti cle point did forget tell maximum climb position elevator trim also position will yield highest tow During normal contest flight check elevator trim properly set healthy toss will ensure model reaches necessary flying speed will need case have line break zoom-launch will find necessary hold excessive Down stick during actual zoom overcome Up trim Once launch com plete immediately trim maximum cruise lift encountered trim maximum climb Several have already figured out basically fly elevator two trim modes true reason efficiency figure aircraft has much potential energy maximum its its launch height force gravity given condition thingother atmospheric conditionsthat will bring model down faster-than-expected rate creasing its drag control deflection causes drag important Sailplane will exhibit specific behavior given tailplane setting have observed model carefully remember way behaves will have basis make in-flight judgments Instance youre maximum cruise mode suddenly models tail raises its speed creases Now know didnt give model elevator command can pretty well guess model has entered better air about start climbing basis decision-making extremely important contest pilot following part article landing dont want pass up because us know modern Sailplane contests won ground times have seen guys come smoking through landing cir cle cartwheeling model hitting timer bad luck no matter much might complain blown approach yields very predictable blown landing Lets launch 205-equipped Sailplane again Thats good amount line tension Now throw model As model climbs pull some Upstretch line As start round over top some pulsing winch pedal could prove prudent Now let off Up elevator tap winch last timehard pull Up elevator get off winch pedal same time may need little Down round over top glide guys launching much better started Now lets concentrate landing thing hope currently have some sort Continued page 148 1000 ToOls FREE Catalog MicroMark, Small Tool Speolahala ii paula munnaur louIs palall find idaMaaiq WhaM mar maw MICIOMARK catalog Mny tools brd-lo-IInd . HUGE DISCOUNTS No narelaing hue stare Now nueptlalag pan toed s clone pour malibu Ssoo tIme save memyl 0I 20 use thin coupon send name address Micro-Mark Box 5112-39624 E Main SI Clinton NJ 08809 I I carearnrt...aI L O,r,de USA edS2OOtoArMapoVg I 3 PRICE 299 379 479 689 989 SLRItY 11/LI THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 12B6/z778 13677/s8 146778 1567 16878 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION lOTO 2O/e INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 5/a34149 634149 72833456179 833/,4568189 845881/a199 9456677/e199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 11/67239 124W279 125W279 1256279 1356349 1456459 1556659 1641/aN969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/aN279 84 6/,7/a78 299 SERIES 400C 8 6/a677/a7289 977/a7289 *W WIDE BLADE EW EXTRA WIDE N NARROW August 1987 145 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE
Edition: Model Aviation - 1987/08
Page Numbers: 44, 45, 143, 144, 145
Radio Control Scale Bob Dolly Wischer PARIS FAI MEETING annual trek Paris rules technical specifications finished brought back some rather astonishing re suits years have heard lament US competitors FAI model specifica tions too restrictive particularly engine displacements generally agreed day single 60 two-stroke engine Scale model long since thing past yet FAI rule book persisted upper limit restraining limit imposed originally because suspected unreliability earlier radio equipment because general regard safety days models could lethal missiles hands novice pilots Actually some conditions may continue exist has become increasingly apparent old restrictions somewhat antiquated stifling competition Scale Subcommittee members come realize engine size model now probably never truly limiting factor reference engine displacement being eliminated FAI RC Scale rules beginning January 1988 Total flying weight model dummy pilot fuel has now increased six kilograms seven kilograms 1543 lb becomes true limiting factor example seven-kilogram airplane four engines displacing three cubic inches couldnt exist because engines alone would over weight limit elimination engine dis placement limit first proposed mid-1986 Mick Reeves England really no hope such proposal slight chance acceptance because basic FAI rules state spe cifically limits must placed everything order aircraft qualify model now recognized underpowered model truly unsafe fly prone accident recent past have aircraft flown World Championships marginal weight Large models built up weight limit primarily because large size has pronounced beneficial effect scalelike flight Two other limits continue imposed total horizontal area wing plus stabilizer now increased 250 square decimeters 269 sq ftwhich very large indeed necessary increase area order accommodate new Latest masterpiece Merritt Zimmerman this-scaie deHavilland 60 Moth powered fantastic handmade scaieCirrus engine 45 Cu dispiacement modei scratch-buiit inciuding tires lathe-turned soiid rubber weighs 26 ib Fuseiage piywood prototype wings taii covered Coverite Antique Soild rubber type used punch-press cushions Ailan Cooks Zippy SportL uitraiight is1/-scaie weighs oniy5 ib Engine OS 60 four-stroker Finish isCoverite Biack Baron fiim paint atest Eiectric piane Keith Shaw Ziin 526 R having 68-in span weightof oniy7 lb Power isan Astro cobaiteo 24-1200 mAh ceiis prop 12 x 9 turns 9500 rpm Scaie pliot Shaw iook-aiikel 44 Model Aviation Aibert Straubs Osprey Ii built 1/B scaic Structure spruce baisa Fabricote wings Fuselage covered giass cloth epoxy Engine 40 weight limit would have exceeding safe wing loadings second limitation maximum wing loading 100 grams per square decimeter 3277 oz per sq ft total horizontal area wing plus stab World Championship experi ence have never seen specification checked contest officials take word competitor model meets specs ac tual practice model weight area must given specification certificate wit nessed US AMA Contest Director day strategically built model take full advantage overly generous complexity bonus system supposedly comes end January 1988 date actually July 1987 contenders US Scale team selection program precedes Lincoln Nats schedule bonuses has reduced now very unlikely anyone can reach 20% maximum bonus limit multiengine models will now held down 15% remains exception new schedule tail-dragger triplane 20% airplane modem radio control triplane no complex build operate other con figurations probably doesnt deserve high bonus can see some con troversy continues exist present revision bonus system compromise will need further debate amongst national aero clubs subject complexity models itself has hidden complexities example truly complex aircraft may immense multi-engine type wealth detail both exterior interior Building monstrosity large weight limit permits find detail becomes such small size almost impossible reproduce model complex sub ject actually becomes simple rendtion cause great reduction size Would anyone like estimate what happens static score such aircraft now know experience its low static score defi nite detriment constestant still faced prospect having fly /16-scale monster something remotely approaching scale speed scalelike maneuvering prob lem goes back team selection ten dency judges swept enthusiasm multi-engine model meets noticeable indifference performs World Championship unreasonable expect judges unemotional awarding scores effect emotional judging will some what diminished future World Championships introduction new rule high low flight scores will deleted rule actu ally intended help eliminate national bias judging course result judges emotional tendency see great merit coun trymans performance Deletion high low scores tried first time Giant Sport Scale classes Scale Nats 1986 Lake Charles really successful judges need separated some distance suggested Paris meeting flight judges separated avoid conversation Consistency flight will rewarded decision revise scoring system averaging two best flight scores past pos sible single lucky flight made under ideal weather wind conditions endow con testant unbeatable score World Cham pionships have won lost because luck factor rule change will help mini mize chance element success World Championships also won lost takeoff landing maneuvers K Continued page 143 U Lets enjoy outdoors ort 9 jjj%Your Little World Comfort Hot Burning Summer Days Convenient Size Portable Shade Thats Ouick Set up Change instantly Give Protection Weather Size 72 s120 60 sq ft Add units double triple etc size PortsShade available Add units can used trailer awnings patio covers etc PortaShade convenient size has no center pole useable space can straddle picnic table model airplane small vehicle canopy strong heat reflecting waterproof material white top side unique tear proof corner fittings no grommets stands almost 7 tall strong 1 aluminum poles can stand work play under comfort wind resistant ed 40 MPH PortsShade very last easy install beach picnic mountains anywhere want protection elements Set up very quick person can about 5 minutes can adjusted easily tilt against sun can set up vertically windbreak Master CardVisaMoney OrdersChecks Dealer Inquiries Invited 4M Co Dept M N Shawnee Sportsman Model/PFR4-60 $3995 PS y OK 74029 Economy Model/EPFR4-60 $3295 PS UW Phone 918-534-2244 August 1987 45 Three indispensable references for only modelers . shown Two large volumes Approx 800 photos new color Large format 300 plus phof os nearly 100 defaifed shots us seo 2 4 large color prints aces 3-views uS$4oincludingpostandabeautifulwallchart aircraft Bank authorized check 1MG please color Bank authorized check 1MG please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenong 3175 VictorIa Australia U OPS Special plug U control free flight RC boats high nitro use$290 OPS RC-250 plug RC engines out tuned pipes 09 60 size $400 RC-300 spectatular RC plug ducted fans piped pattern engines racing boats RC cars. $450 OPS Glow Plugs Are Available Local Hobby Shop TX Setupprises pleasant ones Continued page 139 correct transmitter setup par ticular model about flown method use recommend make up reasonably accurate drawings of transmitter control panels showing ALL preset switches potentiometers pots draw ings make several reduced-sized photo copies put together small booklet transmitter happy programming transmitter particular plane dedicate page booklet model Mark carefully position switch pot date label page way have accurate reference can carry right flight box can say good-bye attempts rely memory twenty-three adjustments Also may find seeing booklet flight box sometimes serves remind transmitter needs resetting before starting fly related problem became apparent making transmitter sketches Some pots used RC equipment have pointer index mark visible just screwdriver slot unfortunately makes actual setting pot am biguous see fig 1 instance servothrow pots World Engines Expert Mk 9 transmitter dual-rate presets Airtronics CS7P type controls seems essential index mark some kind provided Make center mark pot using indelible marker dab paint using setup guide will have reference point Figure 2 shows drawings used two transmitters mentioned above combined onto sheet save money photocopying cut apart make separate booklets Happy flyingand may sur Call Parts Peopof PO BOX 26247 New Orleans LA 70186 00-535-2568 RC Scale/Wischers Continued page 45 factors 10 nine effort make high point spot landing within 35-meter circle has spoiled otherwise high-scoring flights e pecially gusty wind conditions necessaiy plan approach model landed across widest part circle gain full advantage competition often deteriorated spot landing contest far demonstration scalelike flight Special effort hit circle spoiled landings improve quality landings de cided change 35-meter circle space marked parallel lines across runway placed 100 meters 328 ft apart landing will now graded quality alone should possible contestants touch down within highK- factor landing zone pilot now also has choice direction taxi takeoff landing eliminates need land across narrow runway wind no run-out space because rough ground conditons along runway boundaries Contestants formerly permitted two tempts official flight abuse privilege led time delays between flights attempt called contestant lost position flight order moved end round reason existence attempt permit second chance com plete flight case engine radio trouble either ground within first 60 seconds flight current reliability com ponents really no valid reason continue practice compensate loss tempt contestant now permitted seven minutes connection glow plug until takeoff 14 minutes total flight time additional minute extra engine Some abuses old attempt rule quite flagrant contestant didnt like wind velocity direction time asked perform attempt called sumption weather conditions would liking rounds end rule also applied Nats FAI flights con testant used so-called faulty plug wasnt excuse make final flight meet wind diminished high score flight finished first place Some would call gamesmanship another name 1986 Oslo Scale World Championship too attempts called trivial reasons result flight time seri ously prolonged Such bending rules team individual gain now terminated On-board ignition June column mention scheme install switch glow battery model heat engines August 1987 143 Its Time Put Plug 1D37 W TI. i h KIT ONLY $895 - - PKE MODELS REAM V 30 ULVI - MANY HARD TO FIND ITEMS FOR RUBBER MODELS -- ceaPL1rEcd4Lu$2ee~ Peck-PeIpmes -7 J BOX 2498 -MA LA MESA CA 92044 E 16191 448-IBIS R RIC PRODUCTS PLUGIN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket $695 TRANSMITTER CASE An inexpensive tugged molded case prorect expensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim arid locking clasp S 1895 WING TUBE & SOCKETS Alumsxjm alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size mudels 7l8diax2S 895 Ii/diax2$995 li/s diax3$2495 feather Ilte glass cloth 7 ozI sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions SS95 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily out damage new 60s 17MM rear bearings ASleeve Puller$ 795 Bearing Puller$ 695 BnthFor$1395 IVANS MAGIC GADGET prctrac device used Ivan Kristensen acoirately measure aileron elevator rudder throw Takes iess work out trimming out airplane qiality tool complete instructions log book canying case5795 NEWI WING MOUNTING SET wing mounting system developed Ron Chidgey fast neat accixate stays tight Three nylon brackets saews machined wood wing blocks included S 595 glow plug low throttle systems always needed extra switch breaking Circuit battery safeguard against inadvertently turning off receiver switch throttle closed such case switch glow plug quickly kills battery Joe Utasi Jomar Products Corp has devised On-Board Power Switch eliminates requirement external switch Its small circuit board about x aining circuitry MOSFET transistor will switch glow plug off desired point throttle servo travel either receiver transmitter switched off Power Switch deactivates connection between battery glow plug small potentiometer board adjustment point power applied plug load limit live amperes heat sink MOSFET heat sink avail able Radio Shack can used loads over five ampsto operate two glow plugs exam ple Power Switch can also used separate receiver channel switching appli cation such smoke system pump landing lights video camera us involved Scale models recognize vast difference value between aircraft average sport model differ ence largely effort expended during construc tion finishing may 10 times great receiver battery pack dies flight have lot lose Jomar Products has Solid State Battery Backer will switch second set batteries main pack drops below safe voltage can used model capable carrying extra weight another four-cell pack cells can capac ity Paris Hobby Show As always arrival Paris annual trip several days early recover symptoms jet lag year visit coincided Paris Hobby Show held large complex exhibition buildings southern fringes city Exposition Park attended show expecting find French equivalent Toledo admission fee first large difference encountered equivalent about $7 show completely contained building about 400 ft square expected find display superior French Scale models Actually really fine example RC Scale McDonnell Douglas F-IS Eagle Philip Avonds come Belgium model equipped US-made K&B 75 engines Turbax fans French modelers apparently reluc tant dispaly aircraft highest quality Near Scale area large rectangular space surrounded coarse netting extended upward almost high ceiling Within enclosure model Helicopters being flown indoors apparent ventilation using standard two-stroke model engines space also flying site rubber-powered Peanut Scale models often ended flights becoming enmeshed four-inch-square open sngs net Retrieval wasnt easy requiring ladders long poles major disappointment airplane ac cessories manufacturers exhibits absence display Kavans new 55-pound-thrust gas turbine exhibits hobby dealers rather manufacturers distinct difference between Paris show what normally seen Toledo As might expected Europe greatest portion displays radio-controlled surface vehicles rather aircraft Much interest centered about large serpentine track model race cars again using standard two-stroke engines methanol fuel Exhaust smoke noise pervaded region Electrically driven cars shared track As US model cars extremely popular France display couple immense semi-trailer trucks about six seven feet length highly detailed excellent finish powered two-stroke 60-size engines mov ing van type tanker large open area show center occu pied live steam model railroad track about 45- 5-in gauge freight train rounding circuit radio controlled no way us determine channels being used operation suspect throttle operator could have bit uneasy about range problems because usually walked alongside locomotive pall smoke hov ered over exhibit partially contributed A-scale steam engine appeared driving French equivalent threshing machine About third hobby show devoted model railroads enjoy overwhelming popu larity Europe compared model air craft Another large portion included surface craft boats cars Boats operated im mense lake contained plastic-lined tank Four days after return Paris Toledo direct comparison between two shows US Scale modelers fortunate indeed Any dozens Scale models displayed Toledo would have received top interest Paris show nothing compare Merritt Zimmermans prize-winning deHavilland 60 Moth its handmade four-cylinder fourstroke Cirrus engine no doubt minds top-quality models exist France WV BEGINNER RACES 3J 0-500 * FORM-i FAt lid ructions c Club Programs NORTH EAST PYLON RACING ORGANIZATION 1l9 Informatlob Contact DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 A RACE NORTHEAST AREA 144 Model Aviation An new Tiger Tail 120 four strokes pipeo oci two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area -860 sq Complete Delus Kit$15995 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 ox * 595 Kwik Set 6 Minute 10028 995 Giont Kwik Set 6 Minute 16 ox *1 395 Half Fast 10 Minute 10028 895 GMP AIRCRAFT INSTRUMENTS 80 3116114318112$ 149 40 3/4 inch $ 149 EASY OFF PULLER rhe proper tool removing drive washeraand flywheels* 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 513 385-7398 00 sO yew dodee order heel Poet odd $150 See Dealer Order Direct Include $2 Per Item UPS GATOR RIC PRODUCTS 3723 Pompano Dr Pensacola FL 32514 1 476-8639 didnt appear exhibit Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Soaring/Blakeslee Continued page 47 Flying 205Part 2 continuation article written Larry Jolly began last months issue youre still thermal left last month models probably getting pretty high Lets think about before leave thermal remember Thomburgs rule know always leave exit thermal back side Thats because since sink follows lift want get flying start scoot through patches bad air let Sailplane come wind commence circle down wind reach back side circle turn nose wind give opposite rudder aircrafts nose now pointed wind hopefully back field Note leave Up elevator trim transmitter alone model will now begin porpoise because must reduce angular difference decalage between wing stabilizer allow model cruise very important bring elevator trim back neutral can cover maximum amount real estate enabling reach next thermal common pitfalls area per formance too much Up trim causing model lose energy its climbs dives other extreme too much Down trim causing over-diving reason use 205 because its excellent L/D lfi-to-drag ratio editor too much compromise other areas airfoil performance Observe tendency airfoil show its point maximum L/D carefully applying Down trim click time will able see point model exhibits its best ground-covering ten dencies click model just builds up speed L/D goes trash have read article point should able summarize follows 1 must build true model maximum performance 2 must fly model observe iden tify two major points its performance curve first point amount tailplane deflection will need best climb performance ther mal second point tailplane setting will give maximum glide angle Matcnea rrmanu TOPFORMAIdL K&B ENGINtS AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER POXY PRIMER K&B SUPER FOXY FAINT K&B MIXING CUPS brief summary essence arti cle point did forget tell maximum climb position elevator trim also position will yield highest tow During normal contest flight check elevator trim properly set healthy toss will ensure model reaches necessary flying speed will need case have line break zoom-launch will find necessary hold excessive Down stick during actual zoom overcome Up trim Once launch com plete immediately trim maximum cruise lift encountered trim maximum climb Several have already figured out basically fly elevator two trim modes true reason efficiency figure aircraft has much potential energy maximum its its launch height force gravity given condition thingother atmospheric conditionsthat will bring model down faster-than-expected rate creasing its drag control deflection causes drag important Sailplane will exhibit specific behavior given tailplane setting have observed model carefully remember way behaves will have basis make in-flight judgments Instance youre maximum cruise mode suddenly models tail raises its speed creases Now know didnt give model elevator command can pretty well guess model has entered better air about start climbing basis decision-making extremely important contest pilot following part article landing dont want pass up because us know modern Sailplane contests won ground times have seen guys come smoking through landing cir cle cartwheeling model hitting timer bad luck no matter much might complain blown approach yields very predictable blown landing Lets launch 205-equipped Sailplane again Thats good amount line tension Now throw model As model climbs pull some Upstretch line As start round over top some pulsing winch pedal could prove prudent Now let off Up elevator tap winch last timehard pull Up elevator get off winch pedal same time may need little Down round over top glide guys launching much better started Now lets concentrate landing thing hope currently have some sort Continued page 148 1000 ToOls FREE Catalog MicroMark, Small Tool Speolahala ii paula munnaur louIs palall find idaMaaiq WhaM mar maw MICIOMARK catalog Mny tools brd-lo-IInd . HUGE DISCOUNTS No narelaing hue stare Now nueptlalag pan toed s clone pour malibu Ssoo tIme save memyl 0I 20 use thin coupon send name address Micro-Mark Box 5112-39624 E Main SI Clinton NJ 08809 I I carearnrt...aI L O,r,de USA edS2OOtoArMapoVg I 3 PRICE 299 379 479 689 989 SLRItY 11/LI THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 12B6/z778 13677/s8 146778 1567 16878 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION lOTO 2O/e INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 5/a34149 634149 72833456179 833/,4568189 845881/a199 9456677/e199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 11/67239 124W279 125W279 1256279 1356349 1456459 1556659 1641/aN969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/aN279 84 6/,7/a78 299 SERIES 400C 8 6/a677/a7289 977/a7289 *W WIDE BLADE EW EXTRA WIDE N NARROW August 1987 145 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE
Edition: Model Aviation - 1987/08
Page Numbers: 44, 45, 143, 144, 145
Radio Control Scale Bob Dolly Wischer PARIS FAI MEETING annual trek Paris rules technical specifications finished brought back some rather astonishing re suits years have heard lament US competitors FAI model specifica tions too restrictive particularly engine displacements generally agreed day single 60 two-stroke engine Scale model long since thing past yet FAI rule book persisted upper limit restraining limit imposed originally because suspected unreliability earlier radio equipment because general regard safety days models could lethal missiles hands novice pilots Actually some conditions may continue exist has become increasingly apparent old restrictions somewhat antiquated stifling competition Scale Subcommittee members come realize engine size model now probably never truly limiting factor reference engine displacement being eliminated FAI RC Scale rules beginning January 1988 Total flying weight model dummy pilot fuel has now increased six kilograms seven kilograms 1543 lb becomes true limiting factor example seven-kilogram airplane four engines displacing three cubic inches couldnt exist because engines alone would over weight limit elimination engine dis placement limit first proposed mid-1986 Mick Reeves England really no hope such proposal slight chance acceptance because basic FAI rules state spe cifically limits must placed everything order aircraft qualify model now recognized underpowered model truly unsafe fly prone accident recent past have aircraft flown World Championships marginal weight Large models built up weight limit primarily because large size has pronounced beneficial effect scalelike flight Two other limits continue imposed total horizontal area wing plus stabilizer now increased 250 square decimeters 269 sq ftwhich very large indeed necessary increase area order accommodate new Latest masterpiece Merritt Zimmerman this-scaie deHavilland 60 Moth powered fantastic handmade scaieCirrus engine 45 Cu dispiacement modei scratch-buiit inciuding tires lathe-turned soiid rubber weighs 26 ib Fuseiage piywood prototype wings taii covered Coverite Antique Soild rubber type used punch-press cushions Ailan Cooks Zippy SportL uitraiight is1/-scaie weighs oniy5 ib Engine OS 60 four-stroker Finish isCoverite Biack Baron fiim paint atest Eiectric piane Keith Shaw Ziin 526 R having 68-in span weightof oniy7 lb Power isan Astro cobaiteo 24-1200 mAh ceiis prop 12 x 9 turns 9500 rpm Scaie pliot Shaw iook-aiikel 44 Model Aviation Aibert Straubs Osprey Ii built 1/B scaic Structure spruce baisa Fabricote wings Fuselage covered giass cloth epoxy Engine 40 weight limit would have exceeding safe wing loadings second limitation maximum wing loading 100 grams per square decimeter 3277 oz per sq ft total horizontal area wing plus stab World Championship experi ence have never seen specification checked contest officials take word competitor model meets specs ac tual practice model weight area must given specification certificate wit nessed US AMA Contest Director day strategically built model take full advantage overly generous complexity bonus system supposedly comes end January 1988 date actually July 1987 contenders US Scale team selection program precedes Lincoln Nats schedule bonuses has reduced now very unlikely anyone can reach 20% maximum bonus limit multiengine models will now held down 15% remains exception new schedule tail-dragger triplane 20% airplane modem radio control triplane no complex build operate other con figurations probably doesnt deserve high bonus can see some con troversy continues exist present revision bonus system compromise will need further debate amongst national aero clubs subject complexity models itself has hidden complexities example truly complex aircraft may immense multi-engine type wealth detail both exterior interior Building monstrosity large weight limit permits find detail becomes such small size almost impossible reproduce model complex sub ject actually becomes simple rendtion cause great reduction size Would anyone like estimate what happens static score such aircraft now know experience its low static score defi nite detriment constestant still faced prospect having fly /16-scale monster something remotely approaching scale speed scalelike maneuvering prob lem goes back team selection ten dency judges swept enthusiasm multi-engine model meets noticeable indifference performs World Championship unreasonable expect judges unemotional awarding scores effect emotional judging will some what diminished future World Championships introduction new rule high low flight scores will deleted rule actu ally intended help eliminate national bias judging course result judges emotional tendency see great merit coun trymans performance Deletion high low scores tried first time Giant Sport Scale classes Scale Nats 1986 Lake Charles really successful judges need separated some distance suggested Paris meeting flight judges separated avoid conversation Consistency flight will rewarded decision revise scoring system averaging two best flight scores past pos sible single lucky flight made under ideal weather wind conditions endow con testant unbeatable score World Cham pionships have won lost because luck factor rule change will help mini mize chance element success World Championships also won lost takeoff landing maneuvers K Continued page 143 U Lets enjoy outdoors ort 9 jjj%Your Little World Comfort Hot Burning Summer Days Convenient Size Portable Shade Thats Ouick Set up Change instantly Give Protection Weather Size 72 s120 60 sq ft Add units double triple etc size PortsShade available Add units can used trailer awnings patio covers etc PortaShade convenient size has no center pole useable space can straddle picnic table model airplane small vehicle canopy strong heat reflecting waterproof material white top side unique tear proof corner fittings no grommets stands almost 7 tall strong 1 aluminum poles can stand work play under comfort wind resistant ed 40 MPH PortsShade very last easy install beach picnic mountains anywhere want protection elements Set up very quick person can about 5 minutes can adjusted easily tilt against sun can set up vertically windbreak Master CardVisaMoney OrdersChecks Dealer Inquiries Invited 4M Co Dept M N Shawnee Sportsman Model/PFR4-60 $3995 PS y OK 74029 Economy Model/EPFR4-60 $3295 PS UW Phone 918-534-2244 August 1987 45 Three indispensable references for only modelers . shown Two large volumes Approx 800 photos new color Large format 300 plus phof os nearly 100 defaifed shots us seo 2 4 large color prints aces 3-views uS$4oincludingpostandabeautifulwallchart aircraft Bank authorized check 1MG please color Bank authorized check 1MG please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenong 3175 VictorIa Australia U OPS Special plug U control free flight RC boats high nitro use$290 OPS RC-250 plug RC engines out tuned pipes 09 60 size $400 RC-300 spectatular RC plug ducted fans piped pattern engines racing boats RC cars. $450 OPS Glow Plugs Are Available Local Hobby Shop TX Setupprises pleasant ones Continued page 139 correct transmitter setup par ticular model about flown method use recommend make up reasonably accurate drawings of transmitter control panels showing ALL preset switches potentiometers pots draw ings make several reduced-sized photo copies put together small booklet transmitter happy programming transmitter particular plane dedicate page booklet model Mark carefully position switch pot date label page way have accurate reference can carry right flight box can say good-bye attempts rely memory twenty-three adjustments Also may find seeing booklet flight box sometimes serves remind transmitter needs resetting before starting fly related problem became apparent making transmitter sketches Some pots used RC equipment have pointer index mark visible just screwdriver slot unfortunately makes actual setting pot am biguous see fig 1 instance servothrow pots World Engines Expert Mk 9 transmitter dual-rate presets Airtronics CS7P type controls seems essential index mark some kind provided Make center mark pot using indelible marker dab paint using setup guide will have reference point Figure 2 shows drawings used two transmitters mentioned above combined onto sheet save money photocopying cut apart make separate booklets Happy flyingand may sur Call Parts Peopof PO BOX 26247 New Orleans LA 70186 00-535-2568 RC Scale/Wischers Continued page 45 factors 10 nine effort make high point spot landing within 35-meter circle has spoiled otherwise high-scoring flights e pecially gusty wind conditions necessaiy plan approach model landed across widest part circle gain full advantage competition often deteriorated spot landing contest far demonstration scalelike flight Special effort hit circle spoiled landings improve quality landings de cided change 35-meter circle space marked parallel lines across runway placed 100 meters 328 ft apart landing will now graded quality alone should possible contestants touch down within highK- factor landing zone pilot now also has choice direction taxi takeoff landing eliminates need land across narrow runway wind no run-out space because rough ground conditons along runway boundaries Contestants formerly permitted two tempts official flight abuse privilege led time delays between flights attempt called contestant lost position flight order moved end round reason existence attempt permit second chance com plete flight case engine radio trouble either ground within first 60 seconds flight current reliability com ponents really no valid reason continue practice compensate loss tempt contestant now permitted seven minutes connection glow plug until takeoff 14 minutes total flight time additional minute extra engine Some abuses old attempt rule quite flagrant contestant didnt like wind velocity direction time asked perform attempt called sumption weather conditions would liking rounds end rule also applied Nats FAI flights con testant used so-called faulty plug wasnt excuse make final flight meet wind diminished high score flight finished first place Some would call gamesmanship another name 1986 Oslo Scale World Championship too attempts called trivial reasons result flight time seri ously prolonged Such bending rules team individual gain now terminated On-board ignition June column mention scheme install switch glow battery model heat engines August 1987 143 Its Time Put Plug 1D37 W TI. i h KIT ONLY $895 - - PKE MODELS REAM V 30 ULVI - MANY HARD TO FIND ITEMS FOR RUBBER MODELS -- ceaPL1rEcd4Lu$2ee~ Peck-PeIpmes -7 J BOX 2498 -MA LA MESA CA 92044 E 16191 448-IBIS R RIC PRODUCTS PLUGIN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket $695 TRANSMITTER CASE An inexpensive tugged molded case prorect expensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim arid locking clasp S 1895 WING TUBE & SOCKETS Alumsxjm alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size mudels 7l8diax2S 895 Ii/diax2$995 li/s diax3$2495 feather Ilte glass cloth 7 ozI sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions SS95 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily out damage new 60s 17MM rear bearings ASleeve Puller$ 795 Bearing Puller$ 695 BnthFor$1395 IVANS MAGIC GADGET prctrac device used Ivan Kristensen acoirately measure aileron elevator rudder throw Takes iess work out trimming out airplane qiality tool complete instructions log book canying case5795 NEWI WING MOUNTING SET wing mounting system developed Ron Chidgey fast neat accixate stays tight Three nylon brackets saews machined wood wing blocks included S 595 glow plug low throttle systems always needed extra switch breaking Circuit battery safeguard against inadvertently turning off receiver switch throttle closed such case switch glow plug quickly kills battery Joe Utasi Jomar Products Corp has devised On-Board Power Switch eliminates requirement external switch Its small circuit board about x aining circuitry MOSFET transistor will switch glow plug off desired point throttle servo travel either receiver transmitter switched off Power Switch deactivates connection between battery glow plug small potentiometer board adjustment point power applied plug load limit live amperes heat sink MOSFET heat sink avail able Radio Shack can used loads over five ampsto operate two glow plugs exam ple Power Switch can also used separate receiver channel switching appli cation such smoke system pump landing lights video camera us involved Scale models recognize vast difference value between aircraft average sport model differ ence largely effort expended during construc tion finishing may 10 times great receiver battery pack dies flight have lot lose Jomar Products has Solid State Battery Backer will switch second set batteries main pack drops below safe voltage can used model capable carrying extra weight another four-cell pack cells can capac ity Paris Hobby Show As always arrival Paris annual trip several days early recover symptoms jet lag year visit coincided Paris Hobby Show held large complex exhibition buildings southern fringes city Exposition Park attended show expecting find French equivalent Toledo admission fee first large difference encountered equivalent about $7 show completely contained building about 400 ft square expected find display superior French Scale models Actually really fine example RC Scale McDonnell Douglas F-IS Eagle Philip Avonds come Belgium model equipped US-made K&B 75 engines Turbax fans French modelers apparently reluc tant dispaly aircraft highest quality Near Scale area large rectangular space surrounded coarse netting extended upward almost high ceiling Within enclosure model Helicopters being flown indoors apparent ventilation using standard two-stroke model engines space also flying site rubber-powered Peanut Scale models often ended flights becoming enmeshed four-inch-square open sngs net Retrieval wasnt easy requiring ladders long poles major disappointment airplane ac cessories manufacturers exhibits absence display Kavans new 55-pound-thrust gas turbine exhibits hobby dealers rather manufacturers distinct difference between Paris show what normally seen Toledo As might expected Europe greatest portion displays radio-controlled surface vehicles rather aircraft Much interest centered about large serpentine track model race cars again using standard two-stroke engines methanol fuel Exhaust smoke noise pervaded region Electrically driven cars shared track As US model cars extremely popular France display couple immense semi-trailer trucks about six seven feet length highly detailed excellent finish powered two-stroke 60-size engines mov ing van type tanker large open area show center occu pied live steam model railroad track about 45- 5-in gauge freight train rounding circuit radio controlled no way us determine channels being used operation suspect throttle operator could have bit uneasy about range problems because usually walked alongside locomotive pall smoke hov ered over exhibit partially contributed A-scale steam engine appeared driving French equivalent threshing machine About third hobby show devoted model railroads enjoy overwhelming popu larity Europe compared model air craft Another large portion included surface craft boats cars Boats operated im mense lake contained plastic-lined tank Four days after return Paris Toledo direct comparison between two shows US Scale modelers fortunate indeed Any dozens Scale models displayed Toledo would have received top interest Paris show nothing compare Merritt Zimmermans prize-winning deHavilland 60 Moth its handmade four-cylinder fourstroke Cirrus engine no doubt minds top-quality models exist France WV BEGINNER RACES 3J 0-500 * FORM-i FAt lid ructions c Club Programs NORTH EAST PYLON RACING ORGANIZATION 1l9 Informatlob Contact DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 A RACE NORTHEAST AREA 144 Model Aviation An new Tiger Tail 120 four strokes pipeo oci two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area -860 sq Complete Delus Kit$15995 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 ox * 595 Kwik Set 6 Minute 10028 995 Giont Kwik Set 6 Minute 16 ox *1 395 Half Fast 10 Minute 10028 895 GMP AIRCRAFT INSTRUMENTS 80 3116114318112$ 149 40 3/4 inch $ 149 EASY OFF PULLER rhe proper tool removing drive washeraand flywheels* 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 513 385-7398 00 sO yew dodee order heel Poet odd $150 See Dealer Order Direct Include $2 Per Item UPS GATOR RIC PRODUCTS 3723 Pompano Dr Pensacola FL 32514 1 476-8639 didnt appear exhibit Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Soaring/Blakeslee Continued page 47 Flying 205Part 2 continuation article written Larry Jolly began last months issue youre still thermal left last month models probably getting pretty high Lets think about before leave thermal remember Thomburgs rule know always leave exit thermal back side Thats because since sink follows lift want get flying start scoot through patches bad air let Sailplane come wind commence circle down wind reach back side circle turn nose wind give opposite rudder aircrafts nose now pointed wind hopefully back field Note leave Up elevator trim transmitter alone model will now begin porpoise because must reduce angular difference decalage between wing stabilizer allow model cruise very important bring elevator trim back neutral can cover maximum amount real estate enabling reach next thermal common pitfalls area per formance too much Up trim causing model lose energy its climbs dives other extreme too much Down trim causing over-diving reason use 205 because its excellent L/D lfi-to-drag ratio editor too much compromise other areas airfoil performance Observe tendency airfoil show its point maximum L/D carefully applying Down trim click time will able see point model exhibits its best ground-covering ten dencies click model just builds up speed L/D goes trash have read article point should able summarize follows 1 must build true model maximum performance 2 must fly model observe iden tify two major points its performance curve first point amount tailplane deflection will need best climb performance ther mal second point tailplane setting will give maximum glide angle Matcnea rrmanu TOPFORMAIdL K&B ENGINtS AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER POXY PRIMER K&B SUPER FOXY FAINT K&B MIXING CUPS brief summary essence arti cle point did forget tell maximum climb position elevator trim also position will yield highest tow During normal contest flight check elevator trim properly set healthy toss will ensure model reaches necessary flying speed will need case have line break zoom-launch will find necessary hold excessive Down stick during actual zoom overcome Up trim Once launch com plete immediately trim maximum cruise lift encountered trim maximum climb Several have already figured out basically fly elevator two trim modes true reason efficiency figure aircraft has much potential energy maximum its its launch height force gravity given condition thingother atmospheric conditionsthat will bring model down faster-than-expected rate creasing its drag control deflection causes drag important Sailplane will exhibit specific behavior given tailplane setting have observed model carefully remember way behaves will have basis make in-flight judgments Instance youre maximum cruise mode suddenly models tail raises its speed creases Now know didnt give model elevator command can pretty well guess model has entered better air about start climbing basis decision-making extremely important contest pilot following part article landing dont want pass up because us know modern Sailplane contests won ground times have seen guys come smoking through landing cir cle cartwheeling model hitting timer bad luck no matter much might complain blown approach yields very predictable blown landing Lets launch 205-equipped Sailplane again Thats good amount line tension Now throw model As model climbs pull some Upstretch line As start round over top some pulsing winch pedal could prove prudent Now let off Up elevator tap winch last timehard pull Up elevator get off winch pedal same time may need little Down round over top glide guys launching much better started Now lets concentrate landing thing hope currently have some sort Continued page 148 1000 ToOls FREE Catalog MicroMark, Small Tool Speolahala ii paula munnaur louIs palall find idaMaaiq WhaM mar maw MICIOMARK catalog Mny tools brd-lo-IInd . HUGE DISCOUNTS No narelaing hue stare Now nueptlalag pan toed s clone pour malibu Ssoo tIme save memyl 0I 20 use thin coupon send name address Micro-Mark Box 5112-39624 E Main SI Clinton NJ 08809 I I carearnrt...aI L O,r,de USA edS2OOtoArMapoVg I 3 PRICE 299 379 479 689 989 SLRItY 11/LI THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 12B6/z778 13677/s8 146778 1567 16878 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION lOTO 2O/e INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 5/a34149 634149 72833456179 833/,4568189 845881/a199 9456677/e199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 11/67239 124W279 125W279 1256279 1356349 1456459 1556659 1641/aN969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/aN279 84 6/,7/a78 299 SERIES 400C 8 6/a677/a7289 977/a7289 *W WIDE BLADE EW EXTRA WIDE N NARROW August 1987 145 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE
Edition: Model Aviation - 1987/08
Page Numbers: 44, 45, 143, 144, 145
Radio Control Scale Bob Dolly Wischer PARIS FAI MEETING annual trek Paris rules technical specifications finished brought back some rather astonishing re suits years have heard lament US competitors FAI model specifica tions too restrictive particularly engine displacements generally agreed day single 60 two-stroke engine Scale model long since thing past yet FAI rule book persisted upper limit restraining limit imposed originally because suspected unreliability earlier radio equipment because general regard safety days models could lethal missiles hands novice pilots Actually some conditions may continue exist has become increasingly apparent old restrictions somewhat antiquated stifling competition Scale Subcommittee members come realize engine size model now probably never truly limiting factor reference engine displacement being eliminated FAI RC Scale rules beginning January 1988 Total flying weight model dummy pilot fuel has now increased six kilograms seven kilograms 1543 lb becomes true limiting factor example seven-kilogram airplane four engines displacing three cubic inches couldnt exist because engines alone would over weight limit elimination engine dis placement limit first proposed mid-1986 Mick Reeves England really no hope such proposal slight chance acceptance because basic FAI rules state spe cifically limits must placed everything order aircraft qualify model now recognized underpowered model truly unsafe fly prone accident recent past have aircraft flown World Championships marginal weight Large models built up weight limit primarily because large size has pronounced beneficial effect scalelike flight Two other limits continue imposed total horizontal area wing plus stabilizer now increased 250 square decimeters 269 sq ftwhich very large indeed necessary increase area order accommodate new Latest masterpiece Merritt Zimmerman this-scaie deHavilland 60 Moth powered fantastic handmade scaieCirrus engine 45 Cu dispiacement modei scratch-buiit inciuding tires lathe-turned soiid rubber weighs 26 ib Fuseiage piywood prototype wings taii covered Coverite Antique Soild rubber type used punch-press cushions Ailan Cooks Zippy SportL uitraiight is1/-scaie weighs oniy5 ib Engine OS 60 four-stroker Finish isCoverite Biack Baron fiim paint atest Eiectric piane Keith Shaw Ziin 526 R having 68-in span weightof oniy7 lb Power isan Astro cobaiteo 24-1200 mAh ceiis prop 12 x 9 turns 9500 rpm Scaie pliot Shaw iook-aiikel 44 Model Aviation Aibert Straubs Osprey Ii built 1/B scaic Structure spruce baisa Fabricote wings Fuselage covered giass cloth epoxy Engine 40 weight limit would have exceeding safe wing loadings second limitation maximum wing loading 100 grams per square decimeter 3277 oz per sq ft total horizontal area wing plus stab World Championship experi ence have never seen specification checked contest officials take word competitor model meets specs ac tual practice model weight area must given specification certificate wit nessed US AMA Contest Director day strategically built model take full advantage overly generous complexity bonus system supposedly comes end January 1988 date actually July 1987 contenders US Scale team selection program precedes Lincoln Nats schedule bonuses has reduced now very unlikely anyone can reach 20% maximum bonus limit multiengine models will now held down 15% remains exception new schedule tail-dragger triplane 20% airplane modem radio control triplane no complex build operate other con figurations probably doesnt deserve high bonus can see some con troversy continues exist present revision bonus system compromise will need further debate amongst national aero clubs subject complexity models itself has hidden complexities example truly complex aircraft may immense multi-engine type wealth detail both exterior interior Building monstrosity large weight limit permits find detail becomes such small size almost impossible reproduce model complex sub ject actually becomes simple rendtion cause great reduction size Would anyone like estimate what happens static score such aircraft now know experience its low static score defi nite detriment constestant still faced prospect having fly /16-scale monster something remotely approaching scale speed scalelike maneuvering prob lem goes back team selection ten dency judges swept enthusiasm multi-engine model meets noticeable indifference performs World Championship unreasonable expect judges unemotional awarding scores effect emotional judging will some what diminished future World Championships introduction new rule high low flight scores will deleted rule actu ally intended help eliminate national bias judging course result judges emotional tendency see great merit coun trymans performance Deletion high low scores tried first time Giant Sport Scale classes Scale Nats 1986 Lake Charles really successful judges need separated some distance suggested Paris meeting flight judges separated avoid conversation Consistency flight will rewarded decision revise scoring system averaging two best flight scores past pos sible single lucky flight made under ideal weather wind conditions endow con testant unbeatable score World Cham pionships have won lost because luck factor rule change will help mini mize chance element success World Championships also won lost takeoff landing maneuvers K Continued page 143 U Lets enjoy outdoors ort 9 jjj%Your Little World Comfort Hot Burning Summer Days Convenient Size Portable Shade Thats Ouick Set up Change instantly Give Protection Weather Size 72 s120 60 sq ft Add units double triple etc size PortsShade available Add units can used trailer awnings patio covers etc PortaShade convenient size has no center pole useable space can straddle picnic table model airplane small vehicle canopy strong heat reflecting waterproof material white top side unique tear proof corner fittings no grommets stands almost 7 tall strong 1 aluminum poles can stand work play under comfort wind resistant ed 40 MPH PortsShade very last easy install beach picnic mountains anywhere want protection elements Set up very quick person can about 5 minutes can adjusted easily tilt against sun can set up vertically windbreak Master CardVisaMoney OrdersChecks Dealer Inquiries Invited 4M Co Dept M N Shawnee Sportsman Model/PFR4-60 $3995 PS y OK 74029 Economy Model/EPFR4-60 $3295 PS UW Phone 918-534-2244 August 1987 45 Three indispensable references for only modelers . shown Two large volumes Approx 800 photos new color Large format 300 plus phof os nearly 100 defaifed shots us seo 2 4 large color prints aces 3-views uS$4oincludingpostandabeautifulwallchart aircraft Bank authorized check 1MG please color Bank authorized check 1MG please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenong 3175 VictorIa Australia U OPS Special plug U control free flight RC boats high nitro use$290 OPS RC-250 plug RC engines out tuned pipes 09 60 size $400 RC-300 spectatular RC plug ducted fans piped pattern engines racing boats RC cars. $450 OPS Glow Plugs Are Available Local Hobby Shop TX Setupprises pleasant ones Continued page 139 correct transmitter setup par ticular model about flown method use recommend make up reasonably accurate drawings of transmitter control panels showing ALL preset switches potentiometers pots draw ings make several reduced-sized photo copies put together small booklet transmitter happy programming transmitter particular plane dedicate page booklet model Mark carefully position switch pot date label page way have accurate reference can carry right flight box can say good-bye attempts rely memory twenty-three adjustments Also may find seeing booklet flight box sometimes serves remind transmitter needs resetting before starting fly related problem became apparent making transmitter sketches Some pots used RC equipment have pointer index mark visible just screwdriver slot unfortunately makes actual setting pot am biguous see fig 1 instance servothrow pots World Engines Expert Mk 9 transmitter dual-rate presets Airtronics CS7P type controls seems essential index mark some kind provided Make center mark pot using indelible marker dab paint using setup guide will have reference point Figure 2 shows drawings used two transmitters mentioned above combined onto sheet save money photocopying cut apart make separate booklets Happy flyingand may sur Call Parts Peopof PO BOX 26247 New Orleans LA 70186 00-535-2568 RC Scale/Wischers Continued page 45 factors 10 nine effort make high point spot landing within 35-meter circle has spoiled otherwise high-scoring flights e pecially gusty wind conditions necessaiy plan approach model landed across widest part circle gain full advantage competition often deteriorated spot landing contest far demonstration scalelike flight Special effort hit circle spoiled landings improve quality landings de cided change 35-meter circle space marked parallel lines across runway placed 100 meters 328 ft apart landing will now graded quality alone should possible contestants touch down within highK- factor landing zone pilot now also has choice direction taxi takeoff landing eliminates need land across narrow runway wind no run-out space because rough ground conditons along runway boundaries Contestants formerly permitted two tempts official flight abuse privilege led time delays between flights attempt called contestant lost position flight order moved end round reason existence attempt permit second chance com plete flight case engine radio trouble either ground within first 60 seconds flight current reliability com ponents really no valid reason continue practice compensate loss tempt contestant now permitted seven minutes connection glow plug until takeoff 14 minutes total flight time additional minute extra engine Some abuses old attempt rule quite flagrant contestant didnt like wind velocity direction time asked perform attempt called sumption weather conditions would liking rounds end rule also applied Nats FAI flights con testant used so-called faulty plug wasnt excuse make final flight meet wind diminished high score flight finished first place Some would call gamesmanship another name 1986 Oslo Scale World Championship too attempts called trivial reasons result flight time seri ously prolonged Such bending rules team individual gain now terminated On-board ignition June column mention scheme install switch glow battery model heat engines August 1987 143 Its Time Put Plug 1D37 W TI. i h KIT ONLY $895 - - PKE MODELS REAM V 30 ULVI - MANY HARD TO FIND ITEMS FOR RUBBER MODELS -- ceaPL1rEcd4Lu$2ee~ Peck-PeIpmes -7 J BOX 2498 -MA LA MESA CA 92044 E 16191 448-IBIS R RIC PRODUCTS PLUGIN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket $695 TRANSMITTER CASE An inexpensive tugged molded case prorect expensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim arid locking clasp S 1895 WING TUBE & SOCKETS Alumsxjm alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size mudels 7l8diax2S 895 Ii/diax2$995 li/s diax3$2495 feather Ilte glass cloth 7 ozI sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions SS95 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily out damage new 60s 17MM rear bearings ASleeve Puller$ 795 Bearing Puller$ 695 BnthFor$1395 IVANS MAGIC GADGET prctrac device used Ivan Kristensen acoirately measure aileron elevator rudder throw Takes iess work out trimming out airplane qiality tool complete instructions log book canying case5795 NEWI WING MOUNTING SET wing mounting system developed Ron Chidgey fast neat accixate stays tight Three nylon brackets saews machined wood wing blocks included S 595 glow plug low throttle systems always needed extra switch breaking Circuit battery safeguard against inadvertently turning off receiver switch throttle closed such case switch glow plug quickly kills battery Joe Utasi Jomar Products Corp has devised On-Board Power Switch eliminates requirement external switch Its small circuit board about x aining circuitry MOSFET transistor will switch glow plug off desired point throttle servo travel either receiver transmitter switched off Power Switch deactivates connection between battery glow plug small potentiometer board adjustment point power applied plug load limit live amperes heat sink MOSFET heat sink avail able Radio Shack can used loads over five ampsto operate two glow plugs exam ple Power Switch can also used separate receiver channel switching appli cation such smoke system pump landing lights video camera us involved Scale models recognize vast difference value between aircraft average sport model differ ence largely effort expended during construc tion finishing may 10 times great receiver battery pack dies flight have lot lose Jomar Products has Solid State Battery Backer will switch second set batteries main pack drops below safe voltage can used model capable carrying extra weight another four-cell pack cells can capac ity Paris Hobby Show As always arrival Paris annual trip several days early recover symptoms jet lag year visit coincided Paris Hobby Show held large complex exhibition buildings southern fringes city Exposition Park attended show expecting find French equivalent Toledo admission fee first large difference encountered equivalent about $7 show completely contained building about 400 ft square expected find display superior French Scale models Actually really fine example RC Scale McDonnell Douglas F-IS Eagle Philip Avonds come Belgium model equipped US-made K&B 75 engines Turbax fans French modelers apparently reluc tant dispaly aircraft highest quality Near Scale area large rectangular space surrounded coarse netting extended upward almost high ceiling Within enclosure model Helicopters being flown indoors apparent ventilation using standard two-stroke model engines space also flying site rubber-powered Peanut Scale models often ended flights becoming enmeshed four-inch-square open sngs net Retrieval wasnt easy requiring ladders long poles major disappointment airplane ac cessories manufacturers exhibits absence display Kavans new 55-pound-thrust gas turbine exhibits hobby dealers rather manufacturers distinct difference between Paris show what normally seen Toledo As might expected Europe greatest portion displays radio-controlled surface vehicles rather aircraft Much interest centered about large serpentine track model race cars again using standard two-stroke engines methanol fuel Exhaust smoke noise pervaded region Electrically driven cars shared track As US model cars extremely popular France display couple immense semi-trailer trucks about six seven feet length highly detailed excellent finish powered two-stroke 60-size engines mov ing van type tanker large open area show center occu pied live steam model railroad track about 45- 5-in gauge freight train rounding circuit radio controlled no way us determine channels being used operation suspect throttle operator could have bit uneasy about range problems because usually walked alongside locomotive pall smoke hov ered over exhibit partially contributed A-scale steam engine appeared driving French equivalent threshing machine About third hobby show devoted model railroads enjoy overwhelming popu larity Europe compared model air craft Another large portion included surface craft boats cars Boats operated im mense lake contained plastic-lined tank Four days after return Paris Toledo direct comparison between two shows US Scale modelers fortunate indeed Any dozens Scale models displayed Toledo would have received top interest Paris show nothing compare Merritt Zimmermans prize-winning deHavilland 60 Moth its handmade four-cylinder fourstroke Cirrus engine no doubt minds top-quality models exist France WV BEGINNER RACES 3J 0-500 * FORM-i FAt lid ructions c Club Programs NORTH EAST PYLON RACING ORGANIZATION 1l9 Informatlob Contact DEAN AVEFRANKLIN MASS 02038 Tel 617 528-4043 203 673-2000 A RACE NORTHEAST AREA 144 Model Aviation An new Tiger Tail 120 four strokes pipeo oci two strokes beautiful performer competition just showing offi balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area -860 sq Complete Delus Kit$15995 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 ox * 595 Kwik Set 6 Minute 10028 995 Giont Kwik Set 6 Minute 16 ox *1 395 Half Fast 10 Minute 10028 895 GMP AIRCRAFT INSTRUMENTS 80 3116114318112$ 149 40 3/4 inch $ 149 EASY OFF PULLER rhe proper tool removing drive washeraand flywheels* 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 513 385-7398 00 sO yew dodee order heel Poet odd $150 See Dealer Order Direct Include $2 Per Item UPS GATOR RIC PRODUCTS 3723 Pompano Dr Pensacola FL 32514 1 476-8639 didnt appear exhibit Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 RC Soaring/Blakeslee Continued page 47 Flying 205Part 2 continuation article written Larry Jolly began last months issue youre still thermal left last month models probably getting pretty high Lets think about before leave thermal remember Thomburgs rule know always leave exit thermal back side Thats because since sink follows lift want get flying start scoot through patches bad air let Sailplane come wind commence circle down wind reach back side circle turn nose wind give opposite rudder aircrafts nose now pointed wind hopefully back field Note leave Up elevator trim transmitter alone model will now begin porpoise because must reduce angular difference decalage between wing stabilizer allow model cruise very important bring elevator trim back neutral can cover maximum amount real estate enabling reach next thermal common pitfalls area per formance too much Up trim causing model lose energy its climbs dives other extreme too much Down trim causing over-diving reason use 205 because its excellent L/D lfi-to-drag ratio editor too much compromise other areas airfoil performance Observe tendency airfoil show its point maximum L/D carefully applying Down trim click time will able see point model exhibits its best ground-covering ten dencies click model just builds up speed L/D goes trash have read article point should able summarize follows 1 must build true model maximum performance 2 must fly model observe iden tify two major points its performance curve first point amount tailplane deflection will need best climb performance ther mal second point tailplane setting will give maximum glide angle Matcnea rrmanu TOPFORMAIdL K&B ENGINtS AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER POXY PRIMER K&B SUPER FOXY FAINT K&B MIXING CUPS brief summary essence arti cle point did forget tell maximum climb position elevator trim also position will yield highest tow During normal contest flight check elevator trim properly set healthy toss will ensure model reaches necessary flying speed will need case have line break zoom-launch will find necessary hold excessive Down stick during actual zoom overcome Up trim Once launch com plete immediately trim maximum cruise lift encountered trim maximum climb Several have already figured out basically fly elevator two trim modes true reason efficiency figure aircraft has much potential energy maximum its its launch height force gravity given condition thingother atmospheric conditionsthat will bring model down faster-than-expected rate creasing its drag control deflection causes drag important Sailplane will exhibit specific behavior given tailplane setting have observed model carefully remember way behaves will have basis make in-flight judgments Instance youre maximum cruise mode suddenly models tail raises its speed creases Now know didnt give model elevator command can pretty well guess model has entered better air about start climbing basis decision-making extremely important contest pilot following part article landing dont want pass up because us know modern Sailplane contests won ground times have seen guys come smoking through landing cir cle cartwheeling model hitting timer bad luck no matter much might complain blown approach yields very predictable blown landing Lets launch 205-equipped Sailplane again Thats good amount line tension Now throw model As model climbs pull some Upstretch line As start round over top some pulsing winch pedal could prove prudent Now let off Up elevator tap winch last timehard pull Up elevator get off winch pedal same time may need little Down round over top glide guys launching much better started Now lets concentrate landing thing hope currently have some sort Continued page 148 1000 ToOls FREE Catalog MicroMark, Small Tool Speolahala ii paula munnaur louIs palall find idaMaaiq WhaM mar maw MICIOMARK catalog Mny tools brd-lo-IInd . 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