UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070
Edition: Model Aviation - 1989/12
Page Numbers: 74, 75, 177, 178, 184, 187
UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070
Edition: Model Aviation - 1989/12
Page Numbers: 74, 75, 177, 178, 184, 187
UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070
Edition: Model Aviation - 1989/12
Page Numbers: 74, 75, 177, 178, 184, 187
UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070
Edition: Model Aviation - 1989/12
Page Numbers: 74, 75, 177, 178, 184, 187
UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070
Edition: Model Aviation - 1989/12
Page Numbers: 74, 75, 177, 178, 184, 187
UPDATE US Outdoor Champs USOCl990 planning attend 1990 USOC Lawrenceville during third week Junehold minute now have extra three months prepare new dates October 1-5 1990 Now know theres got good reason right tis fields bordering flying site planted potatoes 1989 scheduled planting corn 90 get sprayed June herbicide bug juice apparently bad news humans well bugs cant have contestants try ing retrieve models amidst potentially danger ous chemicals Jim OReilly will replace Tony Italiano con test honcho 1990 edition Free Flight Week Jim currently rounding up staff plans proceeding other flirtations taking place could culmi nate formal marriages before year out possibility exists 1990 AMA Nats may go Lawrenceville July/August time framesans Indoor Free Flight separated Indoor Nats might married tradi tional NFFS/US Indoor Championships USIC Johnson City TN isnt far away Lawrenceville however USIC nor mally takes place early June Outdoor Free Flight portion annual AMA Nats might joining hands USOC back Mid American Air Center near Lawrenceville IL October rate concrete Lawrenceville site will quite enticing plum Nats Committee pass up 1990 surrounding crop situa tion July/August period would force sep arated Free Flight situation anywaythus mak ing USOC/AMA FF Nats combo vi able solution coming year tentative column being writ ten late August should sifted out about time words see print Whether will NFFS/AMA hands-across-theborder scene Lawrenceville still re solved rest assured shall Free Flight Lawrenceville 1990 Whats 47 Phoenix benefit younger readers 1947 Phoenix old Pontiac fine Free Flight design origi nally showed up March 1947 issue Air World magazine designer Frank Eh ling retired few years back AMAs Technical Director model won first place 1946 Mirror Meet East Coast much-heralded contest era first became acquainted competition qualities Phoenix design late Forties 74 Model Aviation Free Flight Duration Harry Murphy 3924 Oakwood Blvd Anderson IN 46011 Bob Placier Cliff Osborne-designed past president Central Ohio Free Flight Club COFFC Scene recent contest Wright-Patterson AFB OH iviurvs renaution Frank Ehirngs rnoenlx rroject rausca suspicions aDout tne accuracy original magazine-article plans Problem resolved result fact-finding inves tigation conducted mere 42 years after article published Air World magazine Heap Murfs clockwork timers will make sense after read Tips tab loids part column month always tags timer its weight run-time club member began posting series Class wins duplicate Ehling de sign area contests using Arden ower winning combination left last ing impression Thus Nostalgia Gas ignition event came along 1 dug out arti cle proceeded draw up full-size plans intent placing model upcoming winter building list wing tail posed no problem dia grams fuselage contained conflicting infor mation two sets top side views fuselage coincided other views model other set showed just fuselage framework com pletely dimensioned dimensioned views re sulted fuselage 23/s longer much bulk ier other shown complete plan side views Which two cor rect Well since couldnt see anyone could make mistakes dimensions went route ended up larger longer fuselage completed model looked rather out pro portion respect wing stab didnt remember original model flown fellow club member giving such impression Anyway flight tests beganand did headaches Egads model really tail heavy Arden 19 spaced out firewall heavy stuff such coil batteries timer relocated close firewall possible % decalage magazine article insisted important Shim af ter shim 4 plywood added under trail ing edge wing finally get model glide stallingbut through transi tion glide problems model would climb out under power like crazy effort resolve curiosity last July finally got packet off Frank Ehling cluded copies original article full-size plans now showed both fuselage ver sions plus down-on-my-knees cry Help Frank promptly replied long-distance telephone call declaring Both versions correct ed short-fuselage ver sion intended Arden 19 di mensioned views beam-mounted en gine much heavier thus longer fu selage compensate added up-front weight said submitted magazine article cluded both versions editor chosen condense article thereby omitting formation larger derivative However failed omit dimensioned fuselage frame work views pertained therein lay confusion Also Frank testified pre ferred incorporate extremely tight glide circles models thus lage between wing stab Well simple enough explanation come took 40 years get swer Publications department holidays giftbuying season looming some stockingstuffer ideas Terry Rimerts Fly-by-Night Press has coughed out another gem titled Nostalgia Too Terrys second publication effort collec tion old magazine plans 39 Nos talgia Gas era old favorites included some may have forgotten begin ner Gas-powered Free Flight offers plans some simpler models us built novices era book also fine quick-reference manual must modelbook collectors price $750 plus $150 postage Terrys address 367 Orange Ave Baldwin FL 32234 still some copies left vol ume well $6 plus post age Get before gone 1989 design publication NFFS Na tional Free Flight Societythe Symposiumis now available $14 $16 non-NFFS mem bers plus $2 postage 22nd annual re port ably edited George Xenakis collec tion design articles intended promote encourage investigation discussion doc umentation technical theoretical side Free Flight says forward side cover book Along numerous design articles con tents include three-views Ten Best Models 1989 well capsulized biographies latest Free Flight Hall Fame inductees 110 pages required reading serious Free Flighter source Fred Terzian NFFS Pub lications 4858 Moorpark Ave San Jose CA 95129 Theres no law against buying yourself Christmas year Fred Terzian also advises NFFS Publica Continued page 177 Eric Anderson 1 Bong Field WI contest Bob White-designed Wakefield #71-7 says flew great first time out Photo Shirley Anderson three folks right dummy winners Rudy Kluibers Annual Saturday Night Payload Fun Fest held between two days annual NOFFA contest Wright Field L-R Jim Haught 2nd Bill Barr 1st Harry Murphy 3rd special event continues endure special events kept alive because promotional efforts few dedicated individuals December 1989 75 Some stocking stuers holiday gift-giving Free Flighters info column though optional roughen screw head wire sandpaper solder wire Glue box bottom backplate type wood glue used thick cyanoac rylate CyA speed Five-minute epoxy would also work well set glue two box sides place notch sidepiece goes over wire Use four battery cells piece thin cardboard playing card align sides proper width glue place dry remove cells glue other plate Center top T 1 over T2 drawing glue place Position top box drill pilot holes top screws Drill way through top side A-in drill remove top enlarge its holes /i6 Assemble tighten two 1 -in screws should fit top loosely thread side side screw holes should reinforced CyA because pines softness Using battery cells carbon paper let positive end cells mark con tact point location top Drill through top angle shown plan starting about / away center contact point emerging through top Strip 5 insulation other 24-in strand heavy lamp cord inch time Sand both undersides tops four thumbtacks clean paint Thread wire through hole top starting insulated end passing up through underside top Pull through until insulation flush hole contact side point twist bare wire nearest insulation around pin thumbtack press center carbon mark next three thumbtacks cut off excess wire Again soldering optional recommended Tape wires together enough slack easily open box tape again four inches Add fa vorite glow plug clip soldering no problem buy small two-pronged malewith-female plug Radio Shack similar retailer solder cord female side closer battery box carrying battery box field box flying sessions sure separate plug avoid shorting clip metal objects Switches advisablethe on/off positions can some times confused creating starting prob lems cant solder put clip small heavy plastic bag close baggie tie transit Its good idea paint exterior new box fuel-proof paint may have available short order box will look mess dry install battery cells tighten screws firmly compress springs get good broad contact couple extra notes seem order An December 1989 177 THE WORLDS FINEST SMALL ENGINES Lb easier approach would simply tape four D cells together roughen sol der leads parallel beauty box though cells low can simply stop corner store way field pop four new cells go flying Keep cord length 24 inches Too long cord causes higher resistance weaker glow shorter battery life think youll surprised much easier fun life flying field can consistently quick hot starts using fresh 15-volt dry cells FF Duration/Murphy Continued page 75 tions now handling Don Ross fine book Rubber-Powered Model Airplanes Copies $12 postpaid NFFS members$14 nonmem bers would make fine gift Rubber en thusiast novice expert alike Tips tabloids Wasatch Flyer news letter credits complement Jay Jack son experimenting new Satellite JETS FAN FUNFLY PILOTS CHOICE AWARDS TOP DUN EVENT HELICOPTER NOVICE INTER MEDIATE FAI SCALE Itched Irformance system TOP PERFORMANCE K&B ENGINES AirplaneManne K&B FUELS K&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B MIcro-BSIIoSSS FILLER K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS City User Friendly Odorless UFO Hot Stuff cy anoacrylate CyA cement covered sheeted portion model 7-oz/sq-yd fi berglass cloth using thin UFO found io add considerable strength very little weight gain En contrast found standard thin CyA unsatisfactory purpose its very low viscosity allows penetrate wood too read ily thereby adding excessive weight Also UFO seemed permit little working time filled weave cloth much better Jay also recommends PlC Skin Shield hand protection working CyA other types hazardous materials modelers use abuse Since normal CyA cements raise havoc sinuses jumped UFO stuff hit hobby shop shelves bit disappointed experienced limited reten tion depending its use Jay Jacksons applica tion intriguing suggests some merit may due odorless option after Jay also supplied chart weights dif ferent brands fuel shutoffs made up process selecting satisfactory timer new /2A model Since recently gone through similar study own purposes listing caught eye Jays chart reads fol SCALE AMA SPORT SCALE SPORTSMAN ESPERT GIANT SCALE PATTERN NOVICE SPORTSMAN ADVANCED MASTERS iNS PAl RACING FORMULA 1 1/4 MIDGET SPORT PYLON RITETUESDAYWEERERDAYTHURSDAYFRIDAYRATURDAYRURDAYMORDAY DEC 2R1h DEC 215DEC ZRIRDEC 255DEC SUMDEC SIMJAN lEt PATTERNPATTERNPATTERN114 MIDGET C ALL ALL RACINGSPORTFORMULA ACLASSESCLASSESCLASSES NIGHTPVLON RACING CBANQUET D SCALE STATICSCALEJETSJETS AJUDGING D RW HELl HELl RECDPTERSCOPTERS EL EDO FEE FOR FIRST EUENT 1525 IF POSTMARKED PRIOR TO NDVEMRER iStil El FOR EACH ADDITIONAL EVENT NIGHT FLV iO IF ADDITIONAL EVENTI SANDUET PERUONFOR INFORMATION ONLY SEND SAME THE REMOTE CONTROL ASSOCIATION OF CENTRAL FLORIDA PRESENTS THE WORLDS LARGEST INDEPENDENT RADIO CONTROL COMPETITION THE 22nd ANNUAL RUNWAY fAN6EIUNE DECEMBER 2R iRES ARY 1 ISH ES 1ST RAT ID N/IN PO S C C BOA 948213 MAITLAND FL 521946213 lows Timer Tatone Std Tatone Seelig FAI Seelig Weight grams 164 171 200 374 After scrounging around file drawer about 10 minutes came up torn scrap paper associated effort scribbled Hmmm some apparent differences readings First have make assumption Jay comparing Tatone flood-off timers See ligs since what Seeligs did come Out say Anyway weight list Tatone flood-off timer hit Jays 164 grams exactly weighed two other timers hand also agreed Jays figures ever got varying weights 135 17 grams half-dozen standard Tatone flood-off timers plus 14 176 grams stan dard Tatone pinch-off timers latter compari son also included some original Tatone tim ers well last version crooked shutoff arm heavy end spectrum did bother take timers apart look obvious reasons differenc es some Tatone timers made alu minum frames rather normal brass ones could explain three-gram difference once erroneously assumed old KMart camera timers once popular al ternatives hard-to-find Tatones after Tatone quit producing much heavier until day plunked converted K-Mart timer utilized Tatone faceplate onto scales found weighed same course should happen use brass face plate ante goes up rather quickly did have Seelig compare Jays number two FAI Seeligs tipped scales full three grams converting Tomy Toy mecha nisms 020-size fuel shutoff us age can probably come up timers six-gram range depends design materials used Well above gives some guide lines weights some types fuel shut offs now should have notion best check weigh timers first before choosing install new model Also check running time fastrunning timer will accurate slowrunning have long-established habit weighing Tatone timers checking running time putting information small sticker affixing back timer housing Most Tatone fuel timers will vary running time between 18 32 seconds Re member timers produced time engine runs much longer present Category II III engine-run rules permit short-engine-run flyoff flights five down four seconds suggest greater accuracy what once required well Any clockwork timer can made run faster some counterweight material ground off escapement pawl need con fident can take clockwork mechanisms apart put back together before try operation Personally have gotten pretty good dismantling K-Mart mecha mains repeated trial error has indicated correct amount metal grind off pawl obtain desired shorter faster timer speed takes steady hand taxes trifocals limit anymore recent Scatter newsletter Southern Cali fornia Aero Team disclosed formula rubber lubricant used World Champion Rub ber flier Bob White supposedly made up three ingredientsmedical-grade green soap glycerine castor oil mixes equal amounts soap glycerine adds 5% castor oil heats concoction until gins bubble lightly get ingredients blend together no need furious boil ing mixture should stirred about three minutes observing tiny bubbles Simple huh So much exotic rubber lubes champions always admired Frank Heeb could get anything rubberband fly after ob serving him compete area contests years Although Im particularly wellinformed gumband buff assumed used high-tech features get Rubber models climb out well surprise closer observation day disclosed noseblock bearings simply brass tubes filled solder drilled out make bearinga set procedure used Rubber fliers since day So what makes particular Rubber-power flier champion another duffer Apparently isnt rubber lube nose block bearing Maybe its like telling jokes Some guys can just tell lot better others Phil Hainer produces exact replicas needle valves old Holland Hornets Atwoods Wen-Macs least thats what Willa mette Modelers newsletter WMC Patter says Phil asks $250 plus 25C stamp postage no SASE please needle valves come less spring spring Bic-type butane lighter ballpoint pen suggested Phils address 10412 SF 228th Kent WA 98031 neat tip Bob Beecroft El Torbellino newsletterand mean neat since idea will prevent usually messy chores necessary completing model Bob says frequently finds needs mix small amounts epoxy paints other liq uids some specific ratio can often messy chore ones attempts pour liquids pesky containers pry-off lidsTake two-pan epoxy paint mixing example Bon simply pops lid off can Part stuff sticks plastic soda straw can places finger over top end straw lifts out strawful time can put eyedropper bulb over top end like draw liquid up straw needing mix larger batch has mixing container filled desired amount Part discards straw repeats process new iden tical straw Part B No fuss no mess nice clean cans result loss ex pensive epoxy Neat huh something similar couple plastic spoons snitched fast-food restaurant have marked another marked B dip proper cans After dip ping out desired portions wipe spoons different rags save spoons used again againa different process Continued page 184 178 Model Aviation Name Street Address City Zit2 Dont MissATbing RC Video Magazine brings exciting world RC modeling RC Video Magazine puts flight lines theRC Video Magazine greatest contests fun-flys world RC model-is easiest ing takes workshops countrys topmost affordable way builders share special building andto enjoy ac painting techniques Youll sit-in interviews withtion excitement champion pilots enjoy in-depth kit reviews see theand fun radio latest product developments much morecontrol modeling Dont miss thingl worlds premier radio control videoSubscribe today magazine now better deal four issue 1 year subscription RC Video Magazine now $6995 savings over 50% off newsstand pricel RC VISA & M/C ORDERS ONLY PD Box 98800 873-3347 Lafayette CD 80026 info 303 665-8204 ase Specify VHS BETA 1989 RC Vdeo Mgz~e Mount head-high pole shade aevents might include Nostalgia Ga FF Duration/Murphycardboard disc covered aluminum toilevents P-30 Rubberand late Pee Wee Continued page 1 79 am still waiting some guy market aer-event _____________________________________________osol can containing colored fog skywrites However some eventsalthough han same no-mess results Anyway trying pour Thermal herewhen comes througharound yearsseem destined retain Ia stuff pry-off-lid cans real bear well have somethingbel spotty popularity seldor either above two procedures willflown except large national Contests Such much simplify epoxy-mixing job Special events has always placeevent Payload special eventin Free Flight Initially created promoted Pan Amen following notice Moe Whittemores first hears phrase such events Autogyrocan Airways after WW II concept origi CIA Informer newsletter Need help finding Ornithopter Helicopter usually come tonally flown A B Gas classes good air Take look Radio Shack mind others such Embryo Endur-as Jetex solid-fuel rocket power eveni thermometer/clock Part #63-841 sells ance Rubber Speedand Payload seem towere finally dropped Pan Am pulled awa about $1295 update time between /2 fall categoryits sponsorship early Sixties second seems responsive small have events once NFFS picked up sponsorship 02 temperature changes greater sensitivity considered special events have grown sopowered size late Sixties flow carefully remove grid over air holes well popularity annual club contestas Provisional event until officially adopted case will need tape down Temp but- would dare leave off its event card Itan official AMA event few years Sever ton give constant readout temperature seems no longer considered specialties Since Payload has supported b small groups followers around cous WAY YOUtry its still once-in-awhile fu ufific$ USE THEMevents Free Flighters seem enjoy ADDS UP TOSuch group exists complement regi B IJU-SETTERlars attend various club-sponsored co PERFORMANCEtests held summer Wright Field Da ton OH Rudy Kluiber personally sponsors tk event year Northern Ohio Free Fligi Association NOFFA annual two-day contest t NYROD THE ORIGINALib& PUSH RODblowing starting whistle around 500 pm Saturday evening between two contest day soon diminutive models popping oi car trunks model boxes RElATORS AILERONS THROTTLEtIAIiDRUIt6CLUDED BOATS SAPtANES.YOUR14NVROOaptev Some models appear fairly new othe 8 Rod 2-56 Bd9d OOcl show signs having storage boxes S years ring participants soon forn around makeshift plywood takeoff ramp whi headed diminishing wind da Since Payload still official AMA G Pt5 sern-event requires three-point takeoff gear ai Continued page Th 184 Model Aviation hot new helicopter video designed take flier ground zero through autorotation quickly safely Perfect just starting out pilot want ing improve ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070