NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178
Edition: Model Aviation - 1990/06
Page Numbers: 74, 75, 175, 176, 177, 178, 182
NEW FF CLUB should like welcome new kid block literally speaking new kid West Michigan Free Flight Club its membership roster shows about half young people accompany ing photo shows members Ill troduce beginning front row left nght Chris Mauw Joel Postma Tim Leugs Mike Holtz Chris Tanas Lisa Sarber middle row has Joe Kresnak Tim Anderson Steve Baker Rayon Wanbie Rodnee Shank ones back row Bob Pattison Bob Hoffman Tim Sarber Dave Shank Bill Buten hius Jim Tanas Bill Schottey groups kingpins missing photo namely Krazy Karl Spielmaker shall assume photographer Tim Sarber clubs president no newcomer donning cloak leadership since remembered aiding admin istrative duties 1984 SAM Champs club holds its meetings Kelloggville High School located Grand Rapids area currently involved rudimen tary Indoor Outdoor Rubber models plan ning some club contests early 1990 col lectively publish newsletter Anyone wishing have information activities new group may contact Tim Sarber 2514 Sharon SW Wyoming MI 49509 Tell em Duration sent Incidentally apparent merit play ful madness fellow affectionately refer Krazy Karl AMA District VII VP Pete Waters recently presented him AMA Superior Service Award unselfish work young people Congratulations Well done Karl Spielmaker also member Michigan Antique Modelers Catalog department recently received red paper brochure Airmans Supply Company lists its offer ing small Scale Endurance Rubber kits ASC handles fine Fresno Models OldTimer Rubber kit products full line mod els produced Blue Ridge Models RIN Mod els Easy Built Models kits Jet-X engines Diels Engineering armada Rubber Scale kits othersplus Japanese tissue silkspan col ors etc get brochure write Airmans Supply Co PO Box 1593 Norfolk NE 687021593 Speaking Jet-X also Jetex years ago Roger Wathens newsletter boasts being rag tended exclusive promotion preserva tion model flying using solid-fuel jet en gines still going strong Roger claims have subscribers far away Saudi Arabia Switzerland yearlong subscription costs $8 six issues $9 Canada $12 overseas currently mailing Out Issue No 19 Back issues may purchased six-volume packets Vol 1 $5 Volume 2 $6 Volume 3 $8 Included lotsa plans pho tos technical data Send subscription money Roger L Wathen Sr 3242 N DeQuincy St Indianapo lis IN 46218 Idealair Models Canada sent its new cata log numerous small RC kits powered glow engines electric motors planes 74 Model Aviation Free Flight Duration Harry Murphy 3824 Oakwood Blvd Anderson iN 4601 West Michigan Free Flight Club has newly formed Grand Rapids Ml area Its membership includes goodly number youngsters aspiring future champions identified Harrys column theres Info too Photo Karl Spleimaker Mark Sextons fine rendering Bruce Kimballs NFFS Model-of-the-Year HandLaunched Gilder 1988 Climbmax Photo Mark Sexton Three Cllmbmax fliers Taft CA flying site L-R Dennis Weatherly Bruce Kim ball Mark Sexton Plc Sandy Sexton New catalogs available Irom Champion Model Products Airmens Supply Co two cottage industries supply impossible-to-find goodies dedicated Free Flighter info column Harry Murphy reports tne new iigntweigni model covering film called Litespan Idealair Models Ontario Canada North Amer ican outlet interesting new product Ik9 cIZhZLz 1/16 sheet aing & stab7 II W S Area projected sq 4525 Flat -A 25 F no - FFr II I 80 N 1 25 2315125 1951 Class ZEEKIjJ II -t20 aan plans Dart Lutz dated 8/18/51 Model designed 09 size glow engines Approx Wt z young man Dan Lutz year 1951 smaller plane Dans 09 Zeek design larger K&B Torpedo-powered Zeek 610 Harry Murphys Zeek chronicles Part Vi continue months column scalelike usages antique cream black olive sive called Balsaloc affix material white silver also supplies brush-on adhe-Continued page 175 June 1990 75 Muri thought hed never able find plan Dan Lutz 1951 09 Zeek good fortune brought tells about column quite similar grouped Elf Series Howeverand important Free Flighters company also North American retail outlet Litespan lightweight iron-an plastic covering produced Solarfilm England semitransparent film comes red yellow blue orange has tissuelike grain finish looks predoped tissue silkspan also opaque colors After soaking sheet Stan wraps sheet form beveled edge inside using rubber-model silkapan instead tissue al lows edges wider blank overlap form After baking assembly kit chen oven cuts through tissue over lap using straightedge guide resulting edges glue seam fit perfectly requir ing less glue good joint Before making joint preglues sur faces mated using very thin glue applied artists brush resulting joint al invisible lightest possible make Another important practice use shrinkable Teflon tubing available electronics sup pliers motor-stick form glued motor tube wont stick form during sembly Before removing tube form Stan adds spiral wrap boron fiber under ten sion improve torsional strength boron attached using nitrocellulose cement Using boron novice Extreme care must used cutting preventing minute broken particles escaping work surface Bill Warner some penetrating observations substance Indoor Scale columns couple years ago RMcM Prop trim Stans props checked bal ance pitch angle tracking assure wobblefree operation Initially individual pieces matched weight strength helps en sure static balance finished prop Pre cisely checking blade angle major antiwobble factor Stan checks tracking sure both blades same plane As re sult Stans props exceptionally smooth run ning Surface grinding US Indoor wood sup pliers compete strongly creating smoothly cut balsa sheets uniform thickness However perfect sheet still has surfaces raw wood Stan Chilton uses surface grinder smooth both sides balsa sheet making slightly thinner balsa lighter stiffer stronger after treatment mechanism under stood has postulated lignin wood has melted thin sheet web strengthens wood much like compos ite structures used full-scale airplanes Stan grinds finished sheets 00115 thick ness FiD models 0010 Indoor Stick rhis technique also corrects balsa sheets un ven thickness salvaging otherwise un istisfactory quality Jnusual Federation ROG Joe Krush man see about flying Philadelphia area ovel Federation ROG model shows hasnt st pioneering spirit see photo tion/Murphy tontinued page 75 ramework model Litespan weighs about z per sq ft com ared heavier films such opaque white onoKote 25 oz silver 20 oz heet has shiny side rather satiny side ihich provides additional choice surface heens Usage suggested both rubber- low-powered models Other claims irtight waterproof resistant glow diesel iels can doped painted comes eets measure 20 x 36 sell 350 per sheet Balsaloc $350 per 110-gram Lr need include shipping charge $3 tr order Idealair 21 Simcoe Road 10 Al ston Ontario LOM LAO Canada Well figures stuff mentioned previous paragraph came poop sheet arrived some samples products course sounded good try own hand applying Earl Poynter Fort Worth TX previously sent number sheets Litespan ventured use yet failed send canned pep talk bolster enthusiasm Any way better late never some wing-flex problems last year using plastic films some weakly stressed Nos talgia Gas designs replaced old film cov ering standard tissue- silkspan-and-dope coverings past fall winter come conclusion films great con struction methods frameworks themselves rigid enough permit use lesstaut plastic coverings reverted tradi tional covering procedures better skin-stress properties some problem models Since just completed building Pee Wee 30 model rather rigid semigeodetic wing stab construction felt would serve guinea pig evaluating Litespan selected semitransparent yellow color application wing since already completed covering stab yellow silkspan weight used Rubber models already applied suffi cient dope Basically found Litespan easy apply quite oblivious high heat case some films material did shrink great deal wrinkles loose ar eas pretty well stretched out heat-sealing perimeter panel framework wing tried both Balsaloc well thinned white glue found little difference adhe sive properties either Also could reheat June 1990 175 Computers Systems Manager Requirements o Excellent communication skills Management Experience Knowledge Prime 2550 DEC PDP 11/73 PC Lan o Familiar Primos Infobasic Seek Novell Dbase RSTS Word 11 RTFILE AMA looking professional manager ex perienced programming databases join staff will manage direct improve enhance technical support activities well develop long-range plans future growth qualified per son preferred however would consider results-oriented person would grow us Candidates should send detailed resume cover letter salary requirements Personnel Manager Academy Model Aeronautics 1810 Samuel Morse Drive Reston Virginia 22090 Principals Only Equal Opportunity Employer JL Made America American Technology RJL Manufactures USA RJL RIC & U/C ENGINES 15 thru 61 Forster Glow & Ignition Engines FACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan 40 HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cafl urte free information RJL industries PO Box 5 Sierra Ma&e CA 91025 818 359-0016 G Modelers amoice - High Quality enient Size Modest Price Jr Kwik Set Epoxy 5 oz $695 Gas Model Products 3773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $250 postage AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 perimeter seal lift material restretch fear color separating film itself really impressed finished prod uct texture appearance ap plied film definitely duplicated doped silkspan tail surfaces quite well nega tive feature can honestly pinpoint film does become taut would prefer relatively small wing built quite rigidly begin will no consequence feature material particularly satisfactory applica tion AMA license numbers upper right wing surface using opaque black Lite span instructions included individually packaged sheet state trim made different colors Litespan may ap plied directly basic covering using same Balsaloc adhesive Scotch-taped 4-in square opaque black workbench painted entire patch thin coating adhe sive allowed dry took about 10 minutes turned over face up pro ceeded cut out letters numbers using age-old cardboard templates sharp ra zor blade simple matter iron place am tell nary wrinide bubble seen aint ever acoming off Its neat stuff Try 1990 Champion Model Products catalog now available folks pro duce fine Champion Coupe Up Shot Mulvi hill Wake-Up Wakefield competition Endur ance Rubber model kits case may have gotten Along kits supply oodles associated supplies such rubber rubber winders various cements balsa rubber lubes prop kits tissue silk timers electronic scales what have especially enjoyed proprietor George Schroedters accompanying four pages chatter regarding state-of-the-art business re ported 40% increase 1989 over previous year say Free Flight dead Get catalog writing Champion Model Products 880 Carmen Court LaVerne CA 91750 serious Rubber flier should have Enya engines Nostalgia Gas Model histori Bob Larsh has supplied yet another useful tool not-so-informed Contest Director Nostalgia Gas enthusiast offering accompa nying chart sorts out various Enya en gines specifically notes eligi ble ineligible NosGas use think list ing should fine reference source mod el engine collector well chart has compiled pertinent data collected magazine ads specific engine review testing articles written Peter Chinn Enys factory specification sheets owners manuals provided new en gines Anyhow next time go model swap meet can tote along copy list ing impress everyone knowledge old Enyas Bob advises beginning 1950 Enya iden tified its engines series designation 09- 15-size engines 19 29 35 sizes assigned four-digit model numbers instead last digit referring its particu lar series instance Enya 29 corporates raised letters Model 5102 bypass port crankcase would Se ries II engine etc says numbering system adhered quite faithfully Enya ex cept engine Series III 35 offering Produced 1963and reasons unknownit designated Model 5224 same Series IV 29 came out 1963 Both series III 35 Model 5224 Se ties IV 29 Model 5224 squared-up intakes however intake 35 rounded 1970 still retained model 5224 logo cast side its crankcase Bob further informs us Enya engines produced prior incorporated series-identification system teardrop-shaped exhaust stacks utilized sand castings rather later die casting engines listed table plain-bearing design Enya produced its ball-bearing glow engines after 1962 yond NosGas-eligible engine cutoff date addition Bob says Enya also produced 15-size diesel 1955 deemed quite good plus revised version after 1957 Both equipped ball bearings however later model NosGas eligible obvi ous distinction between two first model incorporated straight-up 900 front take whereas later model slanted intake located further forward cyl inder specialty engine pro duced Enya noteworthy also eligible NosGas event use would Enya Series 06one proud possession writer can mounted either beam-style radially incorporates rearintake reed-valve fuel system similar Cox reed-valve Babe Bee engines have yet run it certainly pretty thing Oh welltis 7- / iQa 176 Model Aviation S 0 monthly publication covering International RC Soaring Scene USA $17 yr $22/yr 1st Class Canada/Mexico $22/yr US funds Asia & Pacific $28/yr US funds Europe & UK $28/yr US funds Surface Mail Foreign $19/yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 Start Flying Right WgI Send $1OOfor ourc control-line q01bOt/ICIalte5 4 Precigjou QMI Wing Cores 41fledy-To-AssembIe its Low As$3295 4 Texas SlowGotcha 460 Kits 4 Bladders Tuhingines Fittings Plans res etc o 3E-u 760 Waltonvile Rd Hummeletown PA 17036 717 566-3810 0 Thousand sq Model Now Available PLUS $600 I SHIPPING & HANDLING time peruse chart Safety first Outdoor Catapult Glider event solid-balsa Gliders flipped heavens rubber slingshot has around years presently enjoying renewed interest two basic forms first option Provisional event de scribed page 18 current AMA rule book suggested launch device somewhat elaborate 34-in-diameter 6-ftlong metal tube set over stake driven ground supported guy wires also anchored ground stakes slingshot launcher 30-in loop A-in flat rubber attached swivel top pole 24-in length stout cord formed loop attached free end rubber other end cord attaches appropriate hook Glider itself idea contestant hook Glider Onto cord loop walk backwards thereby stretching rubber its limit releases Glider ait hopedskyward trajectory Midwest activity event has centered around St Louis Chicago regions has never made own contest locale Dayton area recollections correct think enthusiasts aforementioned regions responsible Provisional rule being rule book first placebut no particular consequence However what concern question safety respect event admit tedly have never participated wish instigator dumping monsoon anyones parade just watching launches has always given bit chill Try ing guess what result could PreBuilt MV-i Typhoon * Designed Ron Chidgey * 100% Gator R/G Products Components wing/stab tubes & adjusters canopy & cowl *100% built up construction precision jigs * Bob Violetts Magnalite GB 125 used formers * Satisfaction Guaranteed WOODGRAINS INC Rt 9 Box 122 Gumming GA 30130 404-889-4758 Tim Megan Richardson Ga Residents Add 6% Sales Tax links chain secured pole guy-wire supports swivel rubber loop cord loop should give way errant Glider launched such high speed should collide passerby shall leave imagination questioned participants event about possibilities past felt tally struck out arousing particular con cerns regard So Wheres sense daring Murt couple days ago received unex pected telephone call noted Glider flier Bill Schlarb up South Bend related recent personal experience practicing event said set up launcher system about 35 ft car prepared launch model accordingly stretched launch ing line about 15 ft model shot off high rate speed however errant trajec tory let smack side window car resulted smashed model cracked win dow glass Bill said felt uneasy regard incident stated What hit someone instead realistic concern say least No sky falling yet maybe would wise making preparations duck other hand unofficial Hand-Held Catapult Glider event appears sensi ble alternative its popularity gauge 89 USOC US Outdoor Free Flight ChompionshipsRMcM meet drew 38 entries certainly noteworthy area contests now including event cards rules being used initiated Central Indiana Aeromodelers CIA few years ago Whereas true CtA home club claim no hand formulation simple rules govern event Actually HIGH QUALITY ULTRA SWITCH KARNESS Gold cOntacts Inside swBch connectors manufactured Futaba Ultra low profIle actuator Positive lock Mounting simply requires drill ing 1/4 inch hole 100% tasted Custom cable lengths avatlble upon request minimal cost ULTRA SWITCH HARNESS $1995 PLUS $250 SHIPPING & HANDUNG John Voorhees Sidney OH originated concept aided Sig Hawk series small foam-wing Rubber models John originally voiced interest Hand-Launched Glider felt physically no match strong-arm set thus experimented hand-held concept time fered club rules honored today event has caught interest now grows steadily hand-held launcher simple 6-in length /2-in hardwood dowel loop A-in flat rubber having maximum length 9 tached end length has proven little long best results fliers prefer shorter rubber loop approximately 6-in length models used usually somewhat smaller seen AMA event launch ing situation certainly potentially less danger ous addition flier has positive con trol direction attitude launch obvious launcher mechanism definitely simpler construct feeling might prove beneficial analyze current Provisional event closely CIA concept being prac tical alternative safe flying appears hold popular position comparison anyway have now made myself vulnerable hate mail falling rocks Well someone else can pick up feel have already said enough Zeek chroniclesPart VI preceding five installments saga August 1988Part December 1988Part II April 1989Part III June 1989Part IV August 1989Part V have traced evolution legendary Zeek design Lew Mahieus initial endeav MODEL BUILDING 7ERVICE RADIO CONTROL P1ODUCTS carry full line Byron Originals Bob Parkerson Tom cook Bob Violet products COD Orders Accepted 718 983-9735 128 WATCHOGUE ROAD EN SLAM * NV 10314 June 1990 177 viaicnea Perfontnna-n TOP PERE K&B tN Airplane..e K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPtR POXY RESIN K&B SUPER POSY THINNER K&B SUPER POSY PRIMtR K&B SUPER POSY PAINT K&B MIXING CUPS ors through Bill Cranford/Ray Downs volvements finally put formal kitted ef forts bed mid-Fifties purchase Zeek business tooling Midwest Models could have quit point would leave stories couple important design spin-offs untold Therefore shall hang longer attempt dig little deeper past before dispose shovels previous sessions have referred spin-off derivatives flat-bottom airfoil Zeeks want some other identifying label may also have singled Out noticeable balsa-sheeted leading edges flying surfaces chapter shall touch significant 09-size version instigated 1951 Dan Lutz has since spent some years employed K&B Mfg Kraft Systems respectively Dans 09 Zeek presented bit out se quence came along after flat-bottomairfoil 575 Zeek made its mark Dan confesses built several 575s 610s prior 09 undertaking accompanying three-view drawn rapidly fading blueprint Dans original draw ing am currently midst making reproducible tracing full-size model goal generating reproductions legible Since series articles begun have received oral testimony well written com ments appear document number other scaling efforts Zeek design purpose incorporating 09-size engines period Most endeavors said utilize flat-bottom airfoil whereas least effort confirmed have incorporated undercamber would indicate may have scaled up original Zeek kit shall consider initial flat-bottom Zeek design scaled down either two AIB kits undercambered wing sections rate photos drawings versions 1 have seen seem retain close resemblance other above two plan sources However Dan Lutz 1951-dated version does seem fit scal ing mode number reasons Therefore feel deserves place individual attention series Dan sent accompanying photo some time ago verify 09 design stated no longer possessed plan copies HANDLING CHARGE Check order Credit Card order ICODOrder $790 original tracing shortly thereafter during telephone conversation Russ Hansen de signer famed T-Bird noted used exchange Zeek information Dan Dan worked K&B Fifties Luckily us still original blueprint Dans de sign First sheeted leading edges wing stab short span flat center panel five-panel wing indicate definite variations norm Russ testified built two models Dans design during Fifties well its 575 flat-bottom cousin rate various Zeeks performance would list Dans 09 575 ahead A/B offer mgs Obviously would place fourth Russ roster since early 049 engines such Spitzy Spitfire Wasp etc rela tively weak sisters power plants compared later Holland Hornets Cox engines Russ further stated lost both 277s incorporated OK Cub 099s thermals refused dump models though dethermalizers activated would add some credence claim fantastic glide shot down wanted hack Dans plans list Arden 099 glow McCoy 098 OK Cub 074 099 Royal Spit fire 065 possible power plants probably brands available en dorsed plans 8-18-51 little blue pneumatic-action Spit fire fuel shutoff timers shown installed immedi ately behind 3/ plywood firewall sup ports radially mounted engine landing gear its 1 -in-diameter single wheel fuselage typical Zeek sheet-balsabox construction A2 sheet sides 4 top bottom fuselage measures 2 high 1 4 wide firewall cross section tapers rear pylon width front stab fuselage formers / sheet py lon extra-hard A-in sheet balsa sports %2-sheet wing platform pylon stalled after wing tail have covered engine timer installed establish center-of-gravity 65% rearward lead ing edge wing top / sheet stabilizer platform lo cated belowand parallel tothe top 01 fuselage Thus oniy decalage 1 positive incidence afforded pylon upon Continued page 182 Oty Amount Stock No DescriptionPrice UI ___ ordei I_ __ ____________________ __ _____ HOINImB 73/4% TaxINC Sub Total use TN Only Handling r TOTALIblank Street Address Cfty State~-Zip--- fl call OMasterCard ElVisa ElAmer Exp Exp Date615 Card No JShip COD[Ny Check enclosed $ MA mmElimm mU mu 1 178 Model Aviation l ma Name Street Address City State Zip RIGINALSN# b5U1PlUll Glasair Byron Originals 1 sexiest designs available modelers . perfect project scale- minded sport flyer its flight character istics great its looks crisp re sponsive totally aerobatic Full flap landings slow fully predictable Byron Glasair TD Retractable Gear Version also available perfect example unique Complete-Kit-Concept ma terials required complete aircraft part package Just few items included landing gear tires custom scale tailwheel fuel system die-cut wood paint templates decal sheet specialized hardware last nut bolt Its fiberglass fuselage cowl injection molded wings tail surfaces build finish fast exclusive plug-in wings make transportation storage easy convenient appreciate top notch value performance RIO aircraft look just like real thing make Byron Originals Glasair next project detailed Info Pack send $200 Catalogs just $300 installation top fuselage sides completed fuselage box sanded thickness 1/16 rear lighten tail wing stab also typical Zeek con struction except /16-sheeted surfaces top Both leading edges wing stab /l6 x Wing spars / x % front tip spars x rear tip spar %-in sq wing trailing edge x -in tapered stock contoured parts cut A-in sheet ribs both wing stab /16 sheetand note top wing also sheeted between two centerline wing ribs way trailing edge stabs single center spar also /I6 X A-in strip stock its contoured parts cut /l6 sheet stock vertical fin /8-in sheet balsa sanded symmetrical airfoil shape think about covers pertinent construction information enable building 1951 Dan Lutz Class 09-size Zeek certainly owe thanks Dan Russ bringing fine Zeek derivative light once again Nostalgia Gas enthusiasts enjoy second time around now remains formal NFFS Nos Gas Design Eligibility Committee approval design before can officially qualify Dans vin tage Zeek derivative todays competition dated plans obvious 1951 rear li cense plates automobile Dans accompa nying photo verification expected piece cake instance See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels time column sees print shall have instigated information packet through proper channels hoped approvals shall forthcoming full-size plans can made available next episode Zeek chronicles will last covers finaland probably elusivederivative Zeek family Fifties flat-bottom-airfoil 575-sq-in Zeek its associate 610 Till See ya downwind FF Old-Timers/Baker Continued page 76 marked No Forwarding Address etc Micro Model Engineering example cottage industry proved too successful owners got busy cottage industry no spare time alland yet could give up regular jobs has out operation just recently got no tice effect Shaffer Omni Systems Inyo kern AirportBuilding 1543 PO Box 1543 yokern CA 93527 tel 1-619/377-5253 has sumed task manufacturing fine line parts fit antique engines us able partsnot just display-case items Good news indeed Now can get Saturday Morning piece OFFF promised start column appeared No 7 dated 9-15-85 Saturday morning just sunup abso lute calm flag hangs limp hot air balloon hangs motionless like Christmas tree ornament park van set up stooge twin pusher Three times last two weeks have Out test fly early flights very much Out trim flight did loop touch-and-go street neatly shat tered both propellers What frustration 1935 model can 1985 know am near final trim now have made new propellers care fully keyed stab trim will repeat able Swallows skim surface making abrupt di rectional changes finding insects low early morning Later day will fly higher show thermals killdeer nesting nearby nervous dont want eggs bird large white cattle egret flaps slowly dignified straight line has flight plan wind up launch good quite enough turn just bit mushy touch tilt stab should killdeer thinks have come rob nest runs front dragging wing old broken wing trick dont have time play game bird wind might come up Calm weather time pre cious Oklahoma rewind turns tilt Oh does look good see now thing grace balance Days past frustration spastic awk wardness forgiven lovely thing see feel 1935 design born 1933 1944 building models learning read plans Fractions /16 What does mean stick What makes after 45 years keep building flying mo ments like solution arrived after much effort rewind again just watch enjoy No trim changes flag stirs just Conrinued page 184 182 Model Aviation 30% Scale SPECIFICATIONS Wing Span 90Channels 5 Length 75WeIght 18-19 lbs Power Super Tlgre 3000 Tartan Twin Quadra 40 Sailo 270 EquIvalent FF Duration/Murphy Continued page 178