Free Flight Duration Bob Meuser COMPUTER bathroom So can chores while. chores dont know about no question computers now dont have live very affluent neighborhood find third kid either has computer has ac cess oneor least programmable calculator Certainly computer age willor might wellhave impact Free Flight count squares graph paper can punch coordi nates wing outline get computer coolie-labor calculating wing area computer age bigger merely Free Flight wouldnt surprised see computer page reg ular feature major modeling maga zines near future have received requests computer programs have sent requests other modelers copies programs. person teacher requested copies programs use conjunction class model airplane building youngsters have computers could use computers solve real-life problems rather sophisticated pinball machines would get better feel what computers about Ive used computers quite bit myself solve model aviation problems feel should some way people have computer programs have facility writing communicate would like have such programs dont have facility writing own dont know start could offer go-between might work can handle some structure formality it might turn chaos big problem stage game programs very portable BASIC program written HP9845 wont run Apple II HP85 version BASIC used IBM-PC wont calculate arc-tan gent Wed need some sort universal language close English lan guage standard mathematical nota tion like Evaluate b/c StOre result register 21 person submitted writeup giving equations used blow-by-blow description modi fied English Ive outlined above printout program mothertongue own computer another person could conceivably make use computer spoke different language Im open suggestions particularly ones likely gain fame glory admirationenvy will pinchof peers oodles coin realm expenditure no effort whatso ever part High-strength solder gave up ordi nary lead-tin solder years ago dis covered Sta-Brite 4% silver 96% tin alloy much stronger Similar solders melting around 440 0F marketed major solder manu facturers Allstate 440 20-yearold supply Sta-Brite finally got used up ordered some Kester silver solder sight unseen mail came first reaction Dang no flux Well discovered solder has flux core will flux work music wire tried uncleaned music wire golly worked although necessary apply heat some time order give flux ample oppor tunity chew through crud wire cleaned 400 sandpaper solder tinned surface immediately stock number 82-5000-0005 Any decent hard ware should stock hobby store does 72 Model Ai~~n Paul Hecman Evanston IL launches old-timer Wakefield replica assigned Dave Copeiand England Streamlineda real classic Photo Dick Stouffer Fly Max almost-ready-to-fly model might turn should good beginners project promptbut Instantgratification virtually guaranteed should go together about hour Advanced builders might wish bit sanding might help performance wee bit Foam used flying surfaces plastic prop supplied Span 15% non-thermal flight times about 40 sec John Voorhees deveioepr manufacturer has built some 98 models least 60 design variations over past year ranging size 8-in span P-30 size developing model appears thoroughly professional job Until wider distribution eta hers becomes established kits can obtained directly manufacturer Prices range $550 kit $4650 twelve shipping cost prepaid US Supplier Fly Max 1429 Fox Dale Place Sidney OhIo 45365 Phone 513 492-8685 Kester will send free booklet called Soldering Simplified send 5O postage handling Kester Solder 4201 Wrightwood Chicago IL 60639 Fifty cents funny kind free anyhow. booklet pretty good know much about soldering wont tell much dont already know Polyhedral parameters John Ferrer tech sort guy innovative model designer President Thunderbugs has come up some notions about polyhedral kinda neat Ferrers First Notion dihedral breaks should lie ellipse shown Figure 1 no theoretical reason gives pleasing results results look about like what lot good model designers have doing tuitively since polyhedral became way go about half-century ago us old folks have heard term elliptical dihedral neither John nor have able find aprecise definition thought meant look wing front appears part ellipse continuous dihe dral breaks John thinks term might mean something along lines First Notion Figure 2 shows dimensions modeler would need fully define front view wing dimension semi-span b tip rise angle center tip dimensions c d flat spans Continued page 169 fqi Ferre*-s frst Notion 6 LI - - C Fig 2 Nonincfature- incredible No caption could describe whats going Bob has complete discussion polyhedral-design scheme column along definitions letters Pres Bruning Royal Oak Ml has built some wierd stuff Plane left canard has no forward flying surface Well maybe canard French duck goose photo bit busy cant see detailsbut appears pusher flying wing other two planes R also Bostonian Cabin shipsand nearest camera sport scale fruit flyl wing sweeps forward stab sweeps strongly aft Canard photo Paul M Smith fruit fly photo Mike Weishans September 1984 73 Jim MoDermoths electric-powered model won 1983 US FF Champs Power ungeared Astro 02 Tony Naccarato photo Heres Bobs neat scheme putting DT small Scale model info column pending upon type rubber used prop run typically 20 25 seconds though model gets quite high will come down fast unless ther mal contest flying practice picking good air well trimming model Good Flying FF IndoorlTenny Continued page 71 new high-tech material requires some special handling and/or building techniques race develop reliable low-weight building methods us ing materials Help using carbon boron fibers new plastic films other materials improve models tell us about word warning Howard Haupt editor El Torbellino newsletter San Diego Orbiteers very recent issue printed following warning Boron glass-like material can very brittle Being brittle can shatter cause small sharp slivers slivers can penetrate skin ease will work themselves back surface Once under skin slivers least minor irritant worst danger heart lungs work way bloodstream Modern boron fiber pretty well behaved will break cleanly bent sharply pliers must take care dispose scrap ends broken off Little pieces boron cannot left laying about worktable floor Two ways discussed ensure proper disposal boron scrap ends have small bottle table repository boron scrap work material As break end off pliers continue grip pliers drop bottle Two place masking tape end boron trimming After breaking off end tape attached dispose wastepaper basket Bostonian year Manhattan Cabin became official event rush set records four AMA ceiling categories three age classes uni fies activity standard rules Now Ed Whittens New York door Times get set official rules Bostonian Cabin 1 Maximum projected wingspans 16 maximum wing chord 3 2 Maximum propellers diameter 6 3 Power limited rubber motors 4 All surfaces double-covered 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14 excluding propellers 7 Fuselage must contain exceed theoretical box measuring 1 x 2A x 3 longerons must both supNow Kit Form Save easy assemble 4 channel kit expandable 71 OnlyS 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos V 4UOmAH battery pack I600mAH ft 1200mAH extral Expandable port motor form exceed box requirement No motor sticks allowed Fuselage must have forward windshield window side least square inch area 8 Landing Gear must fixed least two wheels Y4-in minimum diam eter rigid enough successfully sup port model hand-glided landing 9 Rise Off Ground least two wheels required takeoffs official flights 10 Charisma FactorThe judge rates model model appeals him based construction neatness scalelike details unique features design etc 100 rating up 130 used Two models may given same rating models rated against other against 100 130 scale 11 An unlimited number flights allowed total full seconds three best flights multiplied Charisma Factor determining models score 12 More model may entered prize entrant will awarded Ed Whitten has said Bostonian Cabin models Flying Scale models . except no full-sized mancarrying version Two photos models built some time back John Triolo shown perhaps can see what Ed means might notice design feature two modelsJohn clever ly arranged designs accommodate full-length motors best rubber usage Bedford reg ulars sessions Bedford Boys Ranch Bedford TX Al Backstrom Frisco TX Al flies some Indoor Scale flying wing models really fun $11995 wIth large lInear serve $12995 maK rotary servos Send 8Sf let cemplete catuleg 509 4S72 122 watch model launching photo flying-plank style use nothing except reflex airfoil stability model doesnt seem lack stability can hit ceiling recover very little loss alti tudefar better Scale models better some serious Indoor models Bud Tenny PO Box 545 Richardson TX 75080 FF DurationlMeuser Continued page 73 inner tip wing panels angles B D angles need know setting ribs adjacent dihe dral breaks sanding proper angle dimensions m h amounts prop up end panel gluing end another scenarios involving considerable trial-and-error modelers arrive final dimensions wings Ferrers Second Notion seems pretty good what model designer would really like 1 establish semi-span tip angle 2 establish ratio c d 3 invoke Ferrers First Notion about ellipse business other numbers interest should fall out onto floor ratio c d Well suppose decide rib spacing uniform throughout wing previous experience perhaps simply wild guess decide tip panel should have six rib spaces inner panel should have 10 c/d John calls R simply 10/6 Continued page 172 September 1984 169 Full Command Systems 908 E Rosewood Spokane WA 99208 SRatteries Hot Line 0 Save new Hot Line phone number order ask technical questions about finest RIG battery packs made Call Monday Friday between 9 am 2 pm Eastern time now accept Visa Mastercard UPS COD orders SR Batteries Inc Box 287 Beilport New York 11713 FF DuratonlMeuser Continued page 169 Given scenario constraints skilled draftsman could come up answers about 20 minutes Consid ering will cost modeler some 20 hours build model thats too high price Well John ol Bob havent quite run out notions yet Ferrers Third Notion First Kind trial-and-error program could poked programmable calculator would make short work whole busi ness has done Ferrers Third Notion Second Kind sophisticated pro grammable calculator capable looping branching stupidest computer town could trial-and-error messing around make shorter work Meusers First Notion some Ferrers Complete Notions could packaged up form tables graphs could present column person lacking drafting calcu tational skills facilities inclinations could simply pluck desired num bers graphs tables Well ol Bob dusted off trusty tarnished computeran early steam-powered affairfired boiler programmed up Johns formulas came up whole bunch numbers Unfortunately however results cant compressed point would fit column still read able Perhaps will appear NFFS Digest NFFS Sympo Report some time perhaps Meanwhile youll send self-addressed envelopeat least legal size preferably 6 x 9-in larger 54 worth stamps enough three ouncesIll send three ounces worth whatever happen have hand time else can get 54-worth material 544 nowadays Boron filament tenlfic stuffbut certain dangers associated using latest high-technology material used modelers unlikely lot will ever used usbut better watch out colleague crime Bud Tenny quotes very interesting article authored Howard Haupt has appeared sev eral FF newsletters including own El Torbellino another called Bugs Buzz Since can just flip back couple pages read thing Buds FE Indoor column Ill repeat However potential dangers new material great Id better make sum mary boron filaments come long pieces cut desired size efficient method break off piece using pair pliers Since stuff brittle other methods may leave tiny glass-sharp shards lying around shards can easily penetrate skin will work themselves back sur face As can imagine merely stay place annoying irritants However can work themselves bloodstream get brain heart lungs would bad news moral leave broken ends lying aroundhave jar other sealable container workbench broken ends can dropped direct ly pliers tab masking tape attached end broken off may also aid retaining small piece should put wastebasket other suitable container Reconstituted goofer feathers potential balsa substitute John Oldenkamp sent sample material called Artcor seems might have some poten tial Free Flight construction material consists foam core faced both sides tough water-resistant mater ial name fact adver tising says pH neutral indi cates intended art applica tions artsy-craftsy outfits neighborhooda hotbed artsy craftsy activitycarries stuff also advertised scorable die cuttable thats word printable say nothing its being capable standing numerous tortures like last part So perhaps intended some sort fancy-pants packaging appli cations live cant possibly characterized hotbed packaging applications didnt pursue avenue short dont know can get stuff smallest sheet size 40 x 60 smallest pack 50 sheets/carton wholesale route average kid out boon ies would keep him Orbiteer ribs next 40 years rate Orbiteer per week Perhaps someone commercial twist mind will see fit J whack up 12 x 24 sheets triple wholesale price efforts would make still best bargain town us kids out boonies peddle off under some goofy housebrand name such Goofer-board gain himself copious quantities fame fortune coin realm thereby Thicknesses ensi ty sample /16 material re ceived about 15 lb/cu ft Compared balsa density Id guess foam stuff far weaker balsa grain perhaps bit stronger across grain So using substitute /32 ribs Id inclined use / materialbut beef up bit /16 x 4 hard balsa toward trailing edge example stuff fails simply folding crunching balsa does using entirely different ball game primary source Amoco Foam Products Co Atlanta GA 30339 So whats business about goofer feathers According 78 rpm records vast collection under name Amos Andy produced late Twenties goofer-feathers fuzz peaches Oh soft Now Im implying Artcor real ly made goofer feathers other hand Im surely going toler ate suede-shoe out-of-towners mess ing peach trees Fuse DT small scale sport models model worth building worth little effort get back after flight rig ging dethermalizer small Scale model can chore rather simple lash-up Ive used small pro file model principle could applied fuselage models well negli 172 Model Aviation gible loss scale fidelity sketch almost self-explanatory trick pivot entire horizontal tail about mid-chord sketch show round toothpick used axle used bamboo carefully rounded tapered Music wire say about 032 would probably work also sketch thread rubberbands shown foreshortened fuse actually up close CG Use smallest fuse can obtain Try various twines down local hardware store get skinny rubberbands make Get toy balloon long thin type about inch wide straight deflated Fold piece bond paper half stick balloon inside cut through whole sandwich using sharp scissors 10 minutes youll have years supply hooks bent glass-head pins sure DT rubberband stands away snuffer tube good A6 else fuse might get snuffed before gummyband gets gum enough fracture Fringe benefit See thing called stop sketch model piece /32 x 1-in basswoodmodel railroad stockpoked through slot whittled through fuselage Balsa pads glued bottom limit leading-edge-up position stab can whittled away built up adjust angle incidence Youll probably want add stop some sort limit DT position stab too Bob Meuser 4200 Gregory St Oakland CA 94619 Profile SmoothielKruse Continued page 77 Epox-o-Lite wet index finger quick-and-dirty finishing method would totally unacceptable fullblown competition Stunter its good way go everyday fun-type ship like Profile Smoothie have Ag-Wagon nearly seven years old still looks good cleans up easily due its epoxy/MonoKote finish Flying Smoothie just what ex pected manuevers slow almost stately move through pattern plane bobbles just bit corners did original recall Some theorists attribute wing tip shape Ive never delved find out exact pe culiarity Mostly Im just content en joy flying Smoothie knowing its tory place evolution design hope enjoy too TIGER TAIL 4 Ron Chidgeys latest beat series little larger lighter slower retains honest flight character tistics its predecessors Especially recommended sportsman ad vanced pattern also good choice turn-around pattern Plans construction hints $995 WELLER 3 BLADE PROP very stiff molded fiberglas propellor England Its efficient design allows substantial reduction noise level actually improving per formance $2000 NEW NEW CLAMP IT FOREVER STAINLESS STEEL PIPE CLAMPS Light strong Low-profile seiflocking 3/16 width wont cut 4 silicone couplers Pkg 4 clamps $295 CL ScalelBoss Continued page 78 adjustments best operation doors can made 025 piano wire return springs thickness hardwood block gear leg pushes against Contest report first contest season Northeast featuring CL Scale has termed great success two accounts First turnout about 60 contestants can considered good early date May May 20 sec ondly RC CL Scale Aerobatics events brought together successfully great day flying contest took place Anthony Wayne Recreation Area Bear Mountain State Park New York annual contest usually RC-only affair run Interstate Mod el Flying Club turned combi nation meet effort show pub lic two types flying side-by-side John Caglione IMEC prin cipal organizer meet help George Gaydos Garden State Circle Burners Club getting CL fliers out meet Scale events flown Precision Sport GSCB Profile event scale entry 23 models just great five Precision 10 Sport eight Profile George Gaydos placed first both Precision Profile classes F7F Tigercat Guardian re spectively Steven Macbride took top honors Junior Sport PT-19 pleasure winning Open Sport category Airacobra appears Profile event out lined April 1984 issue MA shows NEW NEW WING TUBE & SOCKETS 1 dia aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing-structure 2024 alum tube 1s24 long socket 12 long $8951 set ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage Cone cone expanding brass ring grips sleeve bearing ID new 60s 17MM rear bearing * Special * Both $1395 See Dealer Order Direct Include 75 Per Item UPS GP Gator RIC Products 3713 Pompano Dr Pensacola FL 32514 Phone AC 904 476-8639 signs having fair participation event first run GSCB Club Fall 83 five contestants noted above eight entered IMFC meet addition seeing modest increase entries heard con siderable talk non-Scalers about might try Profile event certainly easy way introduced Scale modeling contest report can closed thought meet good pub lic saw Aerobatic Scale model flying two different forms -Im sure contestants learned something about other guys choice modeling Pointers finishing Jack Patrolia Marshfield MA says method finishing model components will help Scale modeler obtain better overall mod el finish telling Jacks meth od can termed Back Basics item geared beginner Scale modeling Im sure some experienced build ers will also find informative method described used models dope paint finish applied Jack points out very important part finishing method build sand cover seal fill major components before assembW After construction major com ponents such vertical fin rudder elevator completed should fully sanded sanding complete surfaces part should wet down very damp cloth sponge set aside dry overnight procedure will raise compressed areas balsa surface will ready final sanding 220 grit finer sandpaper sanding complete ap ply coat clear epoxy paint seal strengthen surface After September1984 173 Sleeve Puller $795 Bearing Puller $895 responding advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/09
Page Numbers: 72, 73, 169, 172, 173
Free Flight Duration Bob Meuser COMPUTER bathroom So can chores while. chores dont know about no question computers now dont have live very affluent neighborhood find third kid either has computer has ac cess oneor least programmable calculator Certainly computer age willor might wellhave impact Free Flight count squares graph paper can punch coordi nates wing outline get computer coolie-labor calculating wing area computer age bigger merely Free Flight wouldnt surprised see computer page reg ular feature major modeling maga zines near future have received requests computer programs have sent requests other modelers copies programs. person teacher requested copies programs use conjunction class model airplane building youngsters have computers could use computers solve real-life problems rather sophisticated pinball machines would get better feel what computers about Ive used computers quite bit myself solve model aviation problems feel should some way people have computer programs have facility writing communicate would like have such programs dont have facility writing own dont know start could offer go-between might work can handle some structure formality it might turn chaos big problem stage game programs very portable BASIC program written HP9845 wont run Apple II HP85 version BASIC used IBM-PC wont calculate arc-tan gent Wed need some sort universal language close English lan guage standard mathematical nota tion like Evaluate b/c StOre result register 21 person submitted writeup giving equations used blow-by-blow description modi fied English Ive outlined above printout program mothertongue own computer another person could conceivably make use computer spoke different language Im open suggestions particularly ones likely gain fame glory admirationenvy will pinchof peers oodles coin realm expenditure no effort whatso ever part High-strength solder gave up ordi nary lead-tin solder years ago dis covered Sta-Brite 4% silver 96% tin alloy much stronger Similar solders melting around 440 0F marketed major solder manu facturers Allstate 440 20-yearold supply Sta-Brite finally got used up ordered some Kester silver solder sight unseen mail came first reaction Dang no flux Well discovered solder has flux core will flux work music wire tried uncleaned music wire golly worked although necessary apply heat some time order give flux ample oppor tunity chew through crud wire cleaned 400 sandpaper solder tinned surface immediately stock number 82-5000-0005 Any decent hard ware should stock hobby store does 72 Model Ai~~n Paul Hecman Evanston IL launches old-timer Wakefield replica assigned Dave Copeiand England Streamlineda real classic Photo Dick Stouffer Fly Max almost-ready-to-fly model might turn should good beginners project promptbut Instantgratification virtually guaranteed should go together about hour Advanced builders might wish bit sanding might help performance wee bit Foam used flying surfaces plastic prop supplied Span 15% non-thermal flight times about 40 sec John Voorhees deveioepr manufacturer has built some 98 models least 60 design variations over past year ranging size 8-in span P-30 size developing model appears thoroughly professional job Until wider distribution eta hers becomes established kits can obtained directly manufacturer Prices range $550 kit $4650 twelve shipping cost prepaid US Supplier Fly Max 1429 Fox Dale Place Sidney OhIo 45365 Phone 513 492-8685 Kester will send free booklet called Soldering Simplified send 5O postage handling Kester Solder 4201 Wrightwood Chicago IL 60639 Fifty cents funny kind free anyhow. booklet pretty good know much about soldering wont tell much dont already know Polyhedral parameters John Ferrer tech sort guy innovative model designer President Thunderbugs has come up some notions about polyhedral kinda neat Ferrers First Notion dihedral breaks should lie ellipse shown Figure 1 no theoretical reason gives pleasing results results look about like what lot good model designers have doing tuitively since polyhedral became way go about half-century ago us old folks have heard term elliptical dihedral neither John nor have able find aprecise definition thought meant look wing front appears part ellipse continuous dihe dral breaks John thinks term might mean something along lines First Notion Figure 2 shows dimensions modeler would need fully define front view wing dimension semi-span b tip rise angle center tip dimensions c d flat spans Continued page 169 fqi Ferre*-s frst Notion 6 LI - - C Fig 2 Nonincfature- incredible No caption could describe whats going Bob has complete discussion polyhedral-design scheme column along definitions letters Pres Bruning Royal Oak Ml has built some wierd stuff Plane left canard has no forward flying surface Well maybe canard French duck goose photo bit busy cant see detailsbut appears pusher flying wing other two planes R also Bostonian Cabin shipsand nearest camera sport scale fruit flyl wing sweeps forward stab sweeps strongly aft Canard photo Paul M Smith fruit fly photo Mike Weishans September 1984 73 Jim MoDermoths electric-powered model won 1983 US FF Champs Power ungeared Astro 02 Tony Naccarato photo Heres Bobs neat scheme putting DT small Scale model info column pending upon type rubber used prop run typically 20 25 seconds though model gets quite high will come down fast unless ther mal contest flying practice picking good air well trimming model Good Flying FF IndoorlTenny Continued page 71 new high-tech material requires some special handling and/or building techniques race develop reliable low-weight building methods us ing materials Help using carbon boron fibers new plastic films other materials improve models tell us about word warning Howard Haupt editor El Torbellino newsletter San Diego Orbiteers very recent issue printed following warning Boron glass-like material can very brittle Being brittle can shatter cause small sharp slivers slivers can penetrate skin ease will work themselves back surface Once under skin slivers least minor irritant worst danger heart lungs work way bloodstream Modern boron fiber pretty well behaved will break cleanly bent sharply pliers must take care dispose scrap ends broken off Little pieces boron cannot left laying about worktable floor Two ways discussed ensure proper disposal boron scrap ends have small bottle table repository boron scrap work material As break end off pliers continue grip pliers drop bottle Two place masking tape end boron trimming After breaking off end tape attached dispose wastepaper basket Bostonian year Manhattan Cabin became official event rush set records four AMA ceiling categories three age classes uni fies activity standard rules Now Ed Whittens New York door Times get set official rules Bostonian Cabin 1 Maximum projected wingspans 16 maximum wing chord 3 2 Maximum propellers diameter 6 3 Power limited rubber motors 4 All surfaces double-covered 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14 excluding propellers 7 Fuselage must contain exceed theoretical box measuring 1 x 2A x 3 longerons must both supNow Kit Form Save easy assemble 4 channel kit expandable 71 OnlyS 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos V 4UOmAH battery pack I600mAH ft 1200mAH extral Expandable port motor form exceed box requirement No motor sticks allowed Fuselage must have forward windshield window side least square inch area 8 Landing Gear must fixed least two wheels Y4-in minimum diam eter rigid enough successfully sup port model hand-glided landing 9 Rise Off Ground least two wheels required takeoffs official flights 10 Charisma FactorThe judge rates model model appeals him based construction neatness scalelike details unique features design etc 100 rating up 130 used Two models may given same rating models rated against other against 100 130 scale 11 An unlimited number flights allowed total full seconds three best flights multiplied Charisma Factor determining models score 12 More model may entered prize entrant will awarded Ed Whitten has said Bostonian Cabin models Flying Scale models . except no full-sized mancarrying version Two photos models built some time back John Triolo shown perhaps can see what Ed means might notice design feature two modelsJohn clever ly arranged designs accommodate full-length motors best rubber usage Bedford reg ulars sessions Bedford Boys Ranch Bedford TX Al Backstrom Frisco TX Al flies some Indoor Scale flying wing models really fun $11995 wIth large lInear serve $12995 maK rotary servos Send 8Sf let cemplete catuleg 509 4S72 122 watch model launching photo flying-plank style use nothing except reflex airfoil stability model doesnt seem lack stability can hit ceiling recover very little loss alti tudefar better Scale models better some serious Indoor models Bud Tenny PO Box 545 Richardson TX 75080 FF DurationlMeuser Continued page 73 inner tip wing panels angles B D angles need know setting ribs adjacent dihe dral breaks sanding proper angle dimensions m h amounts prop up end panel gluing end another scenarios involving considerable trial-and-error modelers arrive final dimensions wings Ferrers Second Notion seems pretty good what model designer would really like 1 establish semi-span tip angle 2 establish ratio c d 3 invoke Ferrers First Notion about ellipse business other numbers interest should fall out onto floor ratio c d Well suppose decide rib spacing uniform throughout wing previous experience perhaps simply wild guess decide tip panel should have six rib spaces inner panel should have 10 c/d John calls R simply 10/6 Continued page 172 September 1984 169 Full Command Systems 908 E Rosewood Spokane WA 99208 SRatteries Hot Line 0 Save new Hot Line phone number order ask technical questions about finest RIG battery packs made Call Monday Friday between 9 am 2 pm Eastern time now accept Visa Mastercard UPS COD orders SR Batteries Inc Box 287 Beilport New York 11713 FF DuratonlMeuser Continued page 169 Given scenario constraints skilled draftsman could come up answers about 20 minutes Consid ering will cost modeler some 20 hours build model thats too high price Well John ol Bob havent quite run out notions yet Ferrers Third Notion First Kind trial-and-error program could poked programmable calculator would make short work whole busi ness has done Ferrers Third Notion Second Kind sophisticated pro grammable calculator capable looping branching stupidest computer town could trial-and-error messing around make shorter work Meusers First Notion some Ferrers Complete Notions could packaged up form tables graphs could present column person lacking drafting calcu tational skills facilities inclinations could simply pluck desired num bers graphs tables Well ol Bob dusted off trusty tarnished computeran early steam-powered affairfired boiler programmed up Johns formulas came up whole bunch numbers Unfortunately however results cant compressed point would fit column still read able Perhaps will appear NFFS Digest NFFS Sympo Report some time perhaps Meanwhile youll send self-addressed envelopeat least legal size preferably 6 x 9-in larger 54 worth stamps enough three ouncesIll send three ounces worth whatever happen have hand time else can get 54-worth material 544 nowadays Boron filament tenlfic stuffbut certain dangers associated using latest high-technology material used modelers unlikely lot will ever used usbut better watch out colleague crime Bud Tenny quotes very interesting article authored Howard Haupt has appeared sev eral FF newsletters including own El Torbellino another called Bugs Buzz Since can just flip back couple pages read thing Buds FE Indoor column Ill repeat However potential dangers new material great Id better make sum mary boron filaments come long pieces cut desired size efficient method break off piece using pair pliers Since stuff brittle other methods may leave tiny glass-sharp shards lying around shards can easily penetrate skin will work themselves back sur face As can imagine merely stay place annoying irritants However can work themselves bloodstream get brain heart lungs would bad news moral leave broken ends lying aroundhave jar other sealable container workbench broken ends can dropped direct ly pliers tab masking tape attached end broken off may also aid retaining small piece should put wastebasket other suitable container Reconstituted goofer feathers potential balsa substitute John Oldenkamp sent sample material called Artcor seems might have some poten tial Free Flight construction material consists foam core faced both sides tough water-resistant mater ial name fact adver tising says pH neutral indi cates intended art applica tions artsy-craftsy outfits neighborhooda hotbed artsy craftsy activitycarries stuff also advertised scorable die cuttable thats word printable say nothing its being capable standing numerous tortures like last part So perhaps intended some sort fancy-pants packaging appli cations live cant possibly characterized hotbed packaging applications didnt pursue avenue short dont know can get stuff smallest sheet size 40 x 60 smallest pack 50 sheets/carton wholesale route average kid out boon ies would keep him Orbiteer ribs next 40 years rate Orbiteer per week Perhaps someone commercial twist mind will see fit J whack up 12 x 24 sheets triple wholesale price efforts would make still best bargain town us kids out boonies peddle off under some goofy housebrand name such Goofer-board gain himself copious quantities fame fortune coin realm thereby Thicknesses ensi ty sample /16 material re ceived about 15 lb/cu ft Compared balsa density Id guess foam stuff far weaker balsa grain perhaps bit stronger across grain So using substitute /32 ribs Id inclined use / materialbut beef up bit /16 x 4 hard balsa toward trailing edge example stuff fails simply folding crunching balsa does using entirely different ball game primary source Amoco Foam Products Co Atlanta GA 30339 So whats business about goofer feathers According 78 rpm records vast collection under name Amos Andy produced late Twenties goofer-feathers fuzz peaches Oh soft Now Im implying Artcor real ly made goofer feathers other hand Im surely going toler ate suede-shoe out-of-towners mess ing peach trees Fuse DT small scale sport models model worth building worth little effort get back after flight rig ging dethermalizer small Scale model can chore rather simple lash-up Ive used small pro file model principle could applied fuselage models well negli 172 Model Aviation gible loss scale fidelity sketch almost self-explanatory trick pivot entire horizontal tail about mid-chord sketch show round toothpick used axle used bamboo carefully rounded tapered Music wire say about 032 would probably work also sketch thread rubberbands shown foreshortened fuse actually up close CG Use smallest fuse can obtain Try various twines down local hardware store get skinny rubberbands make Get toy balloon long thin type about inch wide straight deflated Fold piece bond paper half stick balloon inside cut through whole sandwich using sharp scissors 10 minutes youll have years supply hooks bent glass-head pins sure DT rubberband stands away snuffer tube good A6 else fuse might get snuffed before gummyband gets gum enough fracture Fringe benefit See thing called stop sketch model piece /32 x 1-in basswoodmodel railroad stockpoked through slot whittled through fuselage Balsa pads glued bottom limit leading-edge-up position stab can whittled away built up adjust angle incidence Youll probably want add stop some sort limit DT position stab too Bob Meuser 4200 Gregory St Oakland CA 94619 Profile SmoothielKruse Continued page 77 Epox-o-Lite wet index finger quick-and-dirty finishing method would totally unacceptable fullblown competition Stunter its good way go everyday fun-type ship like Profile Smoothie have Ag-Wagon nearly seven years old still looks good cleans up easily due its epoxy/MonoKote finish Flying Smoothie just what ex pected manuevers slow almost stately move through pattern plane bobbles just bit corners did original recall Some theorists attribute wing tip shape Ive never delved find out exact pe culiarity Mostly Im just content en joy flying Smoothie knowing its tory place evolution design hope enjoy too TIGER TAIL 4 Ron Chidgeys latest beat series little larger lighter slower retains honest flight character tistics its predecessors Especially recommended sportsman ad vanced pattern also good choice turn-around pattern Plans construction hints $995 WELLER 3 BLADE PROP very stiff molded fiberglas propellor England Its efficient design allows substantial reduction noise level actually improving per formance $2000 NEW NEW CLAMP IT FOREVER STAINLESS STEEL PIPE CLAMPS Light strong Low-profile seiflocking 3/16 width wont cut 4 silicone couplers Pkg 4 clamps $295 CL ScalelBoss Continued page 78 adjustments best operation doors can made 025 piano wire return springs thickness hardwood block gear leg pushes against Contest report first contest season Northeast featuring CL Scale has termed great success two accounts First turnout about 60 contestants can considered good early date May May 20 sec ondly RC CL Scale Aerobatics events brought together successfully great day flying contest took place Anthony Wayne Recreation Area Bear Mountain State Park New York annual contest usually RC-only affair run Interstate Mod el Flying Club turned combi nation meet effort show pub lic two types flying side-by-side John Caglione IMEC prin cipal organizer meet help George Gaydos Garden State Circle Burners Club getting CL fliers out meet Scale events flown Precision Sport GSCB Profile event scale entry 23 models just great five Precision 10 Sport eight Profile George Gaydos placed first both Precision Profile classes F7F Tigercat Guardian re spectively Steven Macbride took top honors Junior Sport PT-19 pleasure winning Open Sport category Airacobra appears Profile event out lined April 1984 issue MA shows NEW NEW WING TUBE & SOCKETS 1 dia aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing-structure 2024 alum tube 1s24 long socket 12 long $8951 set ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage Cone cone expanding brass ring grips sleeve bearing ID new 60s 17MM rear bearing * Special * Both $1395 See Dealer Order Direct Include 75 Per Item UPS GP Gator RIC Products 3713 Pompano Dr Pensacola FL 32514 Phone AC 904 476-8639 signs having fair participation event first run GSCB Club Fall 83 five contestants noted above eight entered IMFC meet addition seeing modest increase entries heard con siderable talk non-Scalers about might try Profile event certainly easy way introduced Scale modeling contest report can closed thought meet good pub lic saw Aerobatic Scale model flying two different forms -Im sure contestants learned something about other guys choice modeling Pointers finishing Jack Patrolia Marshfield MA says method finishing model components will help Scale modeler obtain better overall mod el finish telling Jacks meth od can termed Back Basics item geared beginner Scale modeling Im sure some experienced build ers will also find informative method described used models dope paint finish applied Jack points out very important part finishing method build sand cover seal fill major components before assembW After construction major com ponents such vertical fin rudder elevator completed should fully sanded sanding complete surfaces part should wet down very damp cloth sponge set aside dry overnight procedure will raise compressed areas balsa surface will ready final sanding 220 grit finer sandpaper sanding complete ap ply coat clear epoxy paint seal strengthen surface After September1984 173 Sleeve Puller $795 Bearing Puller $895 responding advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/09
Page Numbers: 72, 73, 169, 172, 173
Free Flight Duration Bob Meuser COMPUTER bathroom So can chores while. chores dont know about no question computers now dont have live very affluent neighborhood find third kid either has computer has ac cess oneor least programmable calculator Certainly computer age willor might wellhave impact Free Flight count squares graph paper can punch coordi nates wing outline get computer coolie-labor calculating wing area computer age bigger merely Free Flight wouldnt surprised see computer page reg ular feature major modeling maga zines near future have received requests computer programs have sent requests other modelers copies programs. person teacher requested copies programs use conjunction class model airplane building youngsters have computers could use computers solve real-life problems rather sophisticated pinball machines would get better feel what computers about Ive used computers quite bit myself solve model aviation problems feel should some way people have computer programs have facility writing communicate would like have such programs dont have facility writing own dont know start could offer go-between might work can handle some structure formality it might turn chaos big problem stage game programs very portable BASIC program written HP9845 wont run Apple II HP85 version BASIC used IBM-PC wont calculate arc-tan gent Wed need some sort universal language close English lan guage standard mathematical nota tion like Evaluate b/c StOre result register 21 person submitted writeup giving equations used blow-by-blow description modi fied English Ive outlined above printout program mothertongue own computer another person could conceivably make use computer spoke different language Im open suggestions particularly ones likely gain fame glory admirationenvy will pinchof peers oodles coin realm expenditure no effort whatso ever part High-strength solder gave up ordi nary lead-tin solder years ago dis covered Sta-Brite 4% silver 96% tin alloy much stronger Similar solders melting around 440 0F marketed major solder manu facturers Allstate 440 20-yearold supply Sta-Brite finally got used up ordered some Kester silver solder sight unseen mail came first reaction Dang no flux Well discovered solder has flux core will flux work music wire tried uncleaned music wire golly worked although necessary apply heat some time order give flux ample oppor tunity chew through crud wire cleaned 400 sandpaper solder tinned surface immediately stock number 82-5000-0005 Any decent hard ware should stock hobby store does 72 Model Ai~~n Paul Hecman Evanston IL launches old-timer Wakefield replica assigned Dave Copeiand England Streamlineda real classic Photo Dick Stouffer Fly Max almost-ready-to-fly model might turn should good beginners project promptbut Instantgratification virtually guaranteed should go together about hour Advanced builders might wish bit sanding might help performance wee bit Foam used flying surfaces plastic prop supplied Span 15% non-thermal flight times about 40 sec John Voorhees deveioepr manufacturer has built some 98 models least 60 design variations over past year ranging size 8-in span P-30 size developing model appears thoroughly professional job Until wider distribution eta hers becomes established kits can obtained directly manufacturer Prices range $550 kit $4650 twelve shipping cost prepaid US Supplier Fly Max 1429 Fox Dale Place Sidney OhIo 45365 Phone 513 492-8685 Kester will send free booklet called Soldering Simplified send 5O postage handling Kester Solder 4201 Wrightwood Chicago IL 60639 Fifty cents funny kind free anyhow. booklet pretty good know much about soldering wont tell much dont already know Polyhedral parameters John Ferrer tech sort guy innovative model designer President Thunderbugs has come up some notions about polyhedral kinda neat Ferrers First Notion dihedral breaks should lie ellipse shown Figure 1 no theoretical reason gives pleasing results results look about like what lot good model designers have doing tuitively since polyhedral became way go about half-century ago us old folks have heard term elliptical dihedral neither John nor have able find aprecise definition thought meant look wing front appears part ellipse continuous dihe dral breaks John thinks term might mean something along lines First Notion Figure 2 shows dimensions modeler would need fully define front view wing dimension semi-span b tip rise angle center tip dimensions c d flat spans Continued page 169 fqi Ferre*-s frst Notion 6 LI - - C Fig 2 Nonincfature- incredible No caption could describe whats going Bob has complete discussion polyhedral-design scheme column along definitions letters Pres Bruning Royal Oak Ml has built some wierd stuff Plane left canard has no forward flying surface Well maybe canard French duck goose photo bit busy cant see detailsbut appears pusher flying wing other two planes R also Bostonian Cabin shipsand nearest camera sport scale fruit flyl wing sweeps forward stab sweeps strongly aft Canard photo Paul M Smith fruit fly photo Mike Weishans September 1984 73 Jim MoDermoths electric-powered model won 1983 US FF Champs Power ungeared Astro 02 Tony Naccarato photo Heres Bobs neat scheme putting DT small Scale model info column pending upon type rubber used prop run typically 20 25 seconds though model gets quite high will come down fast unless ther mal contest flying practice picking good air well trimming model Good Flying FF IndoorlTenny Continued page 71 new high-tech material requires some special handling and/or building techniques race develop reliable low-weight building methods us ing materials Help using carbon boron fibers new plastic films other materials improve models tell us about word warning Howard Haupt editor El Torbellino newsletter San Diego Orbiteers very recent issue printed following warning Boron glass-like material can very brittle Being brittle can shatter cause small sharp slivers slivers can penetrate skin ease will work themselves back surface Once under skin slivers least minor irritant worst danger heart lungs work way bloodstream Modern boron fiber pretty well behaved will break cleanly bent sharply pliers must take care dispose scrap ends broken off Little pieces boron cannot left laying about worktable floor Two ways discussed ensure proper disposal boron scrap ends have small bottle table repository boron scrap work material As break end off pliers continue grip pliers drop bottle Two place masking tape end boron trimming After breaking off end tape attached dispose wastepaper basket Bostonian year Manhattan Cabin became official event rush set records four AMA ceiling categories three age classes uni fies activity standard rules Now Ed Whittens New York door Times get set official rules Bostonian Cabin 1 Maximum projected wingspans 16 maximum wing chord 3 2 Maximum propellers diameter 6 3 Power limited rubber motors 4 All surfaces double-covered 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14 excluding propellers 7 Fuselage must contain exceed theoretical box measuring 1 x 2A x 3 longerons must both supNow Kit Form Save easy assemble 4 channel kit expandable 71 OnlyS 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos V 4UOmAH battery pack I600mAH ft 1200mAH extral Expandable port motor form exceed box requirement No motor sticks allowed Fuselage must have forward windshield window side least square inch area 8 Landing Gear must fixed least two wheels Y4-in minimum diam eter rigid enough successfully sup port model hand-glided landing 9 Rise Off Ground least two wheels required takeoffs official flights 10 Charisma FactorThe judge rates model model appeals him based construction neatness scalelike details unique features design etc 100 rating up 130 used Two models may given same rating models rated against other against 100 130 scale 11 An unlimited number flights allowed total full seconds three best flights multiplied Charisma Factor determining models score 12 More model may entered prize entrant will awarded Ed Whitten has said Bostonian Cabin models Flying Scale models . except no full-sized mancarrying version Two photos models built some time back John Triolo shown perhaps can see what Ed means might notice design feature two modelsJohn clever ly arranged designs accommodate full-length motors best rubber usage Bedford reg ulars sessions Bedford Boys Ranch Bedford TX Al Backstrom Frisco TX Al flies some Indoor Scale flying wing models really fun $11995 wIth large lInear serve $12995 maK rotary servos Send 8Sf let cemplete catuleg 509 4S72 122 watch model launching photo flying-plank style use nothing except reflex airfoil stability model doesnt seem lack stability can hit ceiling recover very little loss alti tudefar better Scale models better some serious Indoor models Bud Tenny PO Box 545 Richardson TX 75080 FF DurationlMeuser Continued page 73 inner tip wing panels angles B D angles need know setting ribs adjacent dihe dral breaks sanding proper angle dimensions m h amounts prop up end panel gluing end another scenarios involving considerable trial-and-error modelers arrive final dimensions wings Ferrers Second Notion seems pretty good what model designer would really like 1 establish semi-span tip angle 2 establish ratio c d 3 invoke Ferrers First Notion about ellipse business other numbers interest should fall out onto floor ratio c d Well suppose decide rib spacing uniform throughout wing previous experience perhaps simply wild guess decide tip panel should have six rib spaces inner panel should have 10 c/d John calls R simply 10/6 Continued page 172 September 1984 169 Full Command Systems 908 E Rosewood Spokane WA 99208 SRatteries Hot Line 0 Save new Hot Line phone number order ask technical questions about finest RIG battery packs made Call Monday Friday between 9 am 2 pm Eastern time now accept Visa Mastercard UPS COD orders SR Batteries Inc Box 287 Beilport New York 11713 FF DuratonlMeuser Continued page 169 Given scenario constraints skilled draftsman could come up answers about 20 minutes Consid ering will cost modeler some 20 hours build model thats too high price Well John ol Bob havent quite run out notions yet Ferrers Third Notion First Kind trial-and-error program could poked programmable calculator would make short work whole busi ness has done Ferrers Third Notion Second Kind sophisticated pro grammable calculator capable looping branching stupidest computer town could trial-and-error messing around make shorter work Meusers First Notion some Ferrers Complete Notions could packaged up form tables graphs could present column person lacking drafting calcu tational skills facilities inclinations could simply pluck desired num bers graphs tables Well ol Bob dusted off trusty tarnished computeran early steam-powered affairfired boiler programmed up Johns formulas came up whole bunch numbers Unfortunately however results cant compressed point would fit column still read able Perhaps will appear NFFS Digest NFFS Sympo Report some time perhaps Meanwhile youll send self-addressed envelopeat least legal size preferably 6 x 9-in larger 54 worth stamps enough three ouncesIll send three ounces worth whatever happen have hand time else can get 54-worth material 544 nowadays Boron filament tenlfic stuffbut certain dangers associated using latest high-technology material used modelers unlikely lot will ever used usbut better watch out colleague crime Bud Tenny quotes very interesting article authored Howard Haupt has appeared sev eral FF newsletters including own El Torbellino another called Bugs Buzz Since can just flip back couple pages read thing Buds FE Indoor column Ill repeat However potential dangers new material great Id better make sum mary boron filaments come long pieces cut desired size efficient method break off piece using pair pliers Since stuff brittle other methods may leave tiny glass-sharp shards lying around shards can easily penetrate skin will work themselves back sur face As can imagine merely stay place annoying irritants However can work themselves bloodstream get brain heart lungs would bad news moral leave broken ends lying aroundhave jar other sealable container workbench broken ends can dropped direct ly pliers tab masking tape attached end broken off may also aid retaining small piece should put wastebasket other suitable container Reconstituted goofer feathers potential balsa substitute John Oldenkamp sent sample material called Artcor seems might have some poten tial Free Flight construction material consists foam core faced both sides tough water-resistant mater ial name fact adver tising says pH neutral indi cates intended art applica tions artsy-craftsy outfits neighborhooda hotbed artsy craftsy activitycarries stuff also advertised scorable die cuttable thats word printable say nothing its being capable standing numerous tortures like last part So perhaps intended some sort fancy-pants packaging appli cations live cant possibly characterized hotbed packaging applications didnt pursue avenue short dont know can get stuff smallest sheet size 40 x 60 smallest pack 50 sheets/carton wholesale route average kid out boon ies would keep him Orbiteer ribs next 40 years rate Orbiteer per week Perhaps someone commercial twist mind will see fit J whack up 12 x 24 sheets triple wholesale price efforts would make still best bargain town us kids out boonies peddle off under some goofy housebrand name such Goofer-board gain himself copious quantities fame fortune coin realm thereby Thicknesses ensi ty sample /16 material re ceived about 15 lb/cu ft Compared balsa density Id guess foam stuff far weaker balsa grain perhaps bit stronger across grain So using substitute /32 ribs Id inclined use / materialbut beef up bit /16 x 4 hard balsa toward trailing edge example stuff fails simply folding crunching balsa does using entirely different ball game primary source Amoco Foam Products Co Atlanta GA 30339 So whats business about goofer feathers According 78 rpm records vast collection under name Amos Andy produced late Twenties goofer-feathers fuzz peaches Oh soft Now Im implying Artcor real ly made goofer feathers other hand Im surely going toler ate suede-shoe out-of-towners mess ing peach trees Fuse DT small scale sport models model worth building worth little effort get back after flight rig ging dethermalizer small Scale model can chore rather simple lash-up Ive used small pro file model principle could applied fuselage models well negli 172 Model Aviation gible loss scale fidelity sketch almost self-explanatory trick pivot entire horizontal tail about mid-chord sketch show round toothpick used axle used bamboo carefully rounded tapered Music wire say about 032 would probably work also sketch thread rubberbands shown foreshortened fuse actually up close CG Use smallest fuse can obtain Try various twines down local hardware store get skinny rubberbands make Get toy balloon long thin type about inch wide straight deflated Fold piece bond paper half stick balloon inside cut through whole sandwich using sharp scissors 10 minutes youll have years supply hooks bent glass-head pins sure DT rubberband stands away snuffer tube good A6 else fuse might get snuffed before gummyband gets gum enough fracture Fringe benefit See thing called stop sketch model piece /32 x 1-in basswoodmodel railroad stockpoked through slot whittled through fuselage Balsa pads glued bottom limit leading-edge-up position stab can whittled away built up adjust angle incidence Youll probably want add stop some sort limit DT position stab too Bob Meuser 4200 Gregory St Oakland CA 94619 Profile SmoothielKruse Continued page 77 Epox-o-Lite wet index finger quick-and-dirty finishing method would totally unacceptable fullblown competition Stunter its good way go everyday fun-type ship like Profile Smoothie have Ag-Wagon nearly seven years old still looks good cleans up easily due its epoxy/MonoKote finish Flying Smoothie just what ex pected manuevers slow almost stately move through pattern plane bobbles just bit corners did original recall Some theorists attribute wing tip shape Ive never delved find out exact pe culiarity Mostly Im just content en joy flying Smoothie knowing its tory place evolution design hope enjoy too TIGER TAIL 4 Ron Chidgeys latest beat series little larger lighter slower retains honest flight character tistics its predecessors Especially recommended sportsman ad vanced pattern also good choice turn-around pattern Plans construction hints $995 WELLER 3 BLADE PROP very stiff molded fiberglas propellor England Its efficient design allows substantial reduction noise level actually improving per formance $2000 NEW NEW CLAMP IT FOREVER STAINLESS STEEL PIPE CLAMPS Light strong Low-profile seiflocking 3/16 width wont cut 4 silicone couplers Pkg 4 clamps $295 CL ScalelBoss Continued page 78 adjustments best operation doors can made 025 piano wire return springs thickness hardwood block gear leg pushes against Contest report first contest season Northeast featuring CL Scale has termed great success two accounts First turnout about 60 contestants can considered good early date May May 20 sec ondly RC CL Scale Aerobatics events brought together successfully great day flying contest took place Anthony Wayne Recreation Area Bear Mountain State Park New York annual contest usually RC-only affair run Interstate Mod el Flying Club turned combi nation meet effort show pub lic two types flying side-by-side John Caglione IMEC prin cipal organizer meet help George Gaydos Garden State Circle Burners Club getting CL fliers out meet Scale events flown Precision Sport GSCB Profile event scale entry 23 models just great five Precision 10 Sport eight Profile George Gaydos placed first both Precision Profile classes F7F Tigercat Guardian re spectively Steven Macbride took top honors Junior Sport PT-19 pleasure winning Open Sport category Airacobra appears Profile event out lined April 1984 issue MA shows NEW NEW WING TUBE & SOCKETS 1 dia aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing-structure 2024 alum tube 1s24 long socket 12 long $8951 set ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage Cone cone expanding brass ring grips sleeve bearing ID new 60s 17MM rear bearing * Special * Both $1395 See Dealer Order Direct Include 75 Per Item UPS GP Gator RIC Products 3713 Pompano Dr Pensacola FL 32514 Phone AC 904 476-8639 signs having fair participation event first run GSCB Club Fall 83 five contestants noted above eight entered IMFC meet addition seeing modest increase entries heard con siderable talk non-Scalers about might try Profile event certainly easy way introduced Scale modeling contest report can closed thought meet good pub lic saw Aerobatic Scale model flying two different forms -Im sure contestants learned something about other guys choice modeling Pointers finishing Jack Patrolia Marshfield MA says method finishing model components will help Scale modeler obtain better overall mod el finish telling Jacks meth od can termed Back Basics item geared beginner Scale modeling Im sure some experienced build ers will also find informative method described used models dope paint finish applied Jack points out very important part finishing method build sand cover seal fill major components before assembW After construction major com ponents such vertical fin rudder elevator completed should fully sanded sanding complete surfaces part should wet down very damp cloth sponge set aside dry overnight procedure will raise compressed areas balsa surface will ready final sanding 220 grit finer sandpaper sanding complete ap ply coat clear epoxy paint seal strengthen surface After September1984 173 Sleeve Puller $795 Bearing Puller $895 responding advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/09
Page Numbers: 72, 73, 169, 172, 173
Free Flight Duration Bob Meuser COMPUTER bathroom So can chores while. chores dont know about no question computers now dont have live very affluent neighborhood find third kid either has computer has ac cess oneor least programmable calculator Certainly computer age willor might wellhave impact Free Flight count squares graph paper can punch coordi nates wing outline get computer coolie-labor calculating wing area computer age bigger merely Free Flight wouldnt surprised see computer page reg ular feature major modeling maga zines near future have received requests computer programs have sent requests other modelers copies programs. person teacher requested copies programs use conjunction class model airplane building youngsters have computers could use computers solve real-life problems rather sophisticated pinball machines would get better feel what computers about Ive used computers quite bit myself solve model aviation problems feel should some way people have computer programs have facility writing communicate would like have such programs dont have facility writing own dont know start could offer go-between might work can handle some structure formality it might turn chaos big problem stage game programs very portable BASIC program written HP9845 wont run Apple II HP85 version BASIC used IBM-PC wont calculate arc-tan gent Wed need some sort universal language close English lan guage standard mathematical nota tion like Evaluate b/c StOre result register 21 person submitted writeup giving equations used blow-by-blow description modi fied English Ive outlined above printout program mothertongue own computer another person could conceivably make use computer spoke different language Im open suggestions particularly ones likely gain fame glory admirationenvy will pinchof peers oodles coin realm expenditure no effort whatso ever part High-strength solder gave up ordi nary lead-tin solder years ago dis covered Sta-Brite 4% silver 96% tin alloy much stronger Similar solders melting around 440 0F marketed major solder manu facturers Allstate 440 20-yearold supply Sta-Brite finally got used up ordered some Kester silver solder sight unseen mail came first reaction Dang no flux Well discovered solder has flux core will flux work music wire tried uncleaned music wire golly worked although necessary apply heat some time order give flux ample oppor tunity chew through crud wire cleaned 400 sandpaper solder tinned surface immediately stock number 82-5000-0005 Any decent hard ware should stock hobby store does 72 Model Ai~~n Paul Hecman Evanston IL launches old-timer Wakefield replica assigned Dave Copeiand England Streamlineda real classic Photo Dick Stouffer Fly Max almost-ready-to-fly model might turn should good beginners project promptbut Instantgratification virtually guaranteed should go together about hour Advanced builders might wish bit sanding might help performance wee bit Foam used flying surfaces plastic prop supplied Span 15% non-thermal flight times about 40 sec John Voorhees deveioepr manufacturer has built some 98 models least 60 design variations over past year ranging size 8-in span P-30 size developing model appears thoroughly professional job Until wider distribution eta hers becomes established kits can obtained directly manufacturer Prices range $550 kit $4650 twelve shipping cost prepaid US Supplier Fly Max 1429 Fox Dale Place Sidney OhIo 45365 Phone 513 492-8685 Kester will send free booklet called Soldering Simplified send 5O postage handling Kester Solder 4201 Wrightwood Chicago IL 60639 Fifty cents funny kind free anyhow. booklet pretty good know much about soldering wont tell much dont already know Polyhedral parameters John Ferrer tech sort guy innovative model designer President Thunderbugs has come up some notions about polyhedral kinda neat Ferrers First Notion dihedral breaks should lie ellipse shown Figure 1 no theoretical reason gives pleasing results results look about like what lot good model designers have doing tuitively since polyhedral became way go about half-century ago us old folks have heard term elliptical dihedral neither John nor have able find aprecise definition thought meant look wing front appears part ellipse continuous dihe dral breaks John thinks term might mean something along lines First Notion Figure 2 shows dimensions modeler would need fully define front view wing dimension semi-span b tip rise angle center tip dimensions c d flat spans Continued page 169 fqi Ferre*-s frst Notion 6 LI - - C Fig 2 Nonincfature- incredible No caption could describe whats going Bob has complete discussion polyhedral-design scheme column along definitions letters Pres Bruning Royal Oak Ml has built some wierd stuff Plane left canard has no forward flying surface Well maybe canard French duck goose photo bit busy cant see detailsbut appears pusher flying wing other two planes R also Bostonian Cabin shipsand nearest camera sport scale fruit flyl wing sweeps forward stab sweeps strongly aft Canard photo Paul M Smith fruit fly photo Mike Weishans September 1984 73 Jim MoDermoths electric-powered model won 1983 US FF Champs Power ungeared Astro 02 Tony Naccarato photo Heres Bobs neat scheme putting DT small Scale model info column pending upon type rubber used prop run typically 20 25 seconds though model gets quite high will come down fast unless ther mal contest flying practice picking good air well trimming model Good Flying FF IndoorlTenny Continued page 71 new high-tech material requires some special handling and/or building techniques race develop reliable low-weight building methods us ing materials Help using carbon boron fibers new plastic films other materials improve models tell us about word warning Howard Haupt editor El Torbellino newsletter San Diego Orbiteers very recent issue printed following warning Boron glass-like material can very brittle Being brittle can shatter cause small sharp slivers slivers can penetrate skin ease will work themselves back surface Once under skin slivers least minor irritant worst danger heart lungs work way bloodstream Modern boron fiber pretty well behaved will break cleanly bent sharply pliers must take care dispose scrap ends broken off Little pieces boron cannot left laying about worktable floor Two ways discussed ensure proper disposal boron scrap ends have small bottle table repository boron scrap work material As break end off pliers continue grip pliers drop bottle Two place masking tape end boron trimming After breaking off end tape attached dispose wastepaper basket Bostonian year Manhattan Cabin became official event rush set records four AMA ceiling categories three age classes uni fies activity standard rules Now Ed Whittens New York door Times get set official rules Bostonian Cabin 1 Maximum projected wingspans 16 maximum wing chord 3 2 Maximum propellers diameter 6 3 Power limited rubber motors 4 All surfaces double-covered 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14 excluding propellers 7 Fuselage must contain exceed theoretical box measuring 1 x 2A x 3 longerons must both supNow Kit Form Save easy assemble 4 channel kit expandable 71 OnlyS 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos V 4UOmAH battery pack I600mAH ft 1200mAH extral Expandable port motor form exceed box requirement No motor sticks allowed Fuselage must have forward windshield window side least square inch area 8 Landing Gear must fixed least two wheels Y4-in minimum diam eter rigid enough successfully sup port model hand-glided landing 9 Rise Off Ground least two wheels required takeoffs official flights 10 Charisma FactorThe judge rates model model appeals him based construction neatness scalelike details unique features design etc 100 rating up 130 used Two models may given same rating models rated against other against 100 130 scale 11 An unlimited number flights allowed total full seconds three best flights multiplied Charisma Factor determining models score 12 More model may entered prize entrant will awarded Ed Whitten has said Bostonian Cabin models Flying Scale models . except no full-sized mancarrying version Two photos models built some time back John Triolo shown perhaps can see what Ed means might notice design feature two modelsJohn clever ly arranged designs accommodate full-length motors best rubber usage Bedford reg ulars sessions Bedford Boys Ranch Bedford TX Al Backstrom Frisco TX Al flies some Indoor Scale flying wing models really fun $11995 wIth large lInear serve $12995 maK rotary servos Send 8Sf let cemplete catuleg 509 4S72 122 watch model launching photo flying-plank style use nothing except reflex airfoil stability model doesnt seem lack stability can hit ceiling recover very little loss alti tudefar better Scale models better some serious Indoor models Bud Tenny PO Box 545 Richardson TX 75080 FF DurationlMeuser Continued page 73 inner tip wing panels angles B D angles need know setting ribs adjacent dihe dral breaks sanding proper angle dimensions m h amounts prop up end panel gluing end another scenarios involving considerable trial-and-error modelers arrive final dimensions wings Ferrers Second Notion seems pretty good what model designer would really like 1 establish semi-span tip angle 2 establish ratio c d 3 invoke Ferrers First Notion about ellipse business other numbers interest should fall out onto floor ratio c d Well suppose decide rib spacing uniform throughout wing previous experience perhaps simply wild guess decide tip panel should have six rib spaces inner panel should have 10 c/d John calls R simply 10/6 Continued page 172 September 1984 169 Full Command Systems 908 E Rosewood Spokane WA 99208 SRatteries Hot Line 0 Save new Hot Line phone number order ask technical questions about finest RIG battery packs made Call Monday Friday between 9 am 2 pm Eastern time now accept Visa Mastercard UPS COD orders SR Batteries Inc Box 287 Beilport New York 11713 FF DuratonlMeuser Continued page 169 Given scenario constraints skilled draftsman could come up answers about 20 minutes Consid ering will cost modeler some 20 hours build model thats too high price Well John ol Bob havent quite run out notions yet Ferrers Third Notion First Kind trial-and-error program could poked programmable calculator would make short work whole busi ness has done Ferrers Third Notion Second Kind sophisticated pro grammable calculator capable looping branching stupidest computer town could trial-and-error messing around make shorter work Meusers First Notion some Ferrers Complete Notions could packaged up form tables graphs could present column person lacking drafting calcu tational skills facilities inclinations could simply pluck desired num bers graphs tables Well ol Bob dusted off trusty tarnished computeran early steam-powered affairfired boiler programmed up Johns formulas came up whole bunch numbers Unfortunately however results cant compressed point would fit column still read able Perhaps will appear NFFS Digest NFFS Sympo Report some time perhaps Meanwhile youll send self-addressed envelopeat least legal size preferably 6 x 9-in larger 54 worth stamps enough three ouncesIll send three ounces worth whatever happen have hand time else can get 54-worth material 544 nowadays Boron filament tenlfic stuffbut certain dangers associated using latest high-technology material used modelers unlikely lot will ever used usbut better watch out colleague crime Bud Tenny quotes very interesting article authored Howard Haupt has appeared sev eral FF newsletters including own El Torbellino another called Bugs Buzz Since can just flip back couple pages read thing Buds FE Indoor column Ill repeat However potential dangers new material great Id better make sum mary boron filaments come long pieces cut desired size efficient method break off piece using pair pliers Since stuff brittle other methods may leave tiny glass-sharp shards lying around shards can easily penetrate skin will work themselves back sur face As can imagine merely stay place annoying irritants However can work themselves bloodstream get brain heart lungs would bad news moral leave broken ends lying aroundhave jar other sealable container workbench broken ends can dropped direct ly pliers tab masking tape attached end broken off may also aid retaining small piece should put wastebasket other suitable container Reconstituted goofer feathers potential balsa substitute John Oldenkamp sent sample material called Artcor seems might have some poten tial Free Flight construction material consists foam core faced both sides tough water-resistant mater ial name fact adver tising says pH neutral indi cates intended art applica tions artsy-craftsy outfits neighborhooda hotbed artsy craftsy activitycarries stuff also advertised scorable die cuttable thats word printable say nothing its being capable standing numerous tortures like last part So perhaps intended some sort fancy-pants packaging appli cations live cant possibly characterized hotbed packaging applications didnt pursue avenue short dont know can get stuff smallest sheet size 40 x 60 smallest pack 50 sheets/carton wholesale route average kid out boon ies would keep him Orbiteer ribs next 40 years rate Orbiteer per week Perhaps someone commercial twist mind will see fit J whack up 12 x 24 sheets triple wholesale price efforts would make still best bargain town us kids out boonies peddle off under some goofy housebrand name such Goofer-board gain himself copious quantities fame fortune coin realm thereby Thicknesses ensi ty sample /16 material re ceived about 15 lb/cu ft Compared balsa density Id guess foam stuff far weaker balsa grain perhaps bit stronger across grain So using substitute /32 ribs Id inclined use / materialbut beef up bit /16 x 4 hard balsa toward trailing edge example stuff fails simply folding crunching balsa does using entirely different ball game primary source Amoco Foam Products Co Atlanta GA 30339 So whats business about goofer feathers According 78 rpm records vast collection under name Amos Andy produced late Twenties goofer-feathers fuzz peaches Oh soft Now Im implying Artcor real ly made goofer feathers other hand Im surely going toler ate suede-shoe out-of-towners mess ing peach trees Fuse DT small scale sport models model worth building worth little effort get back after flight rig ging dethermalizer small Scale model can chore rather simple lash-up Ive used small pro file model principle could applied fuselage models well negli 172 Model Aviation gible loss scale fidelity sketch almost self-explanatory trick pivot entire horizontal tail about mid-chord sketch show round toothpick used axle used bamboo carefully rounded tapered Music wire say about 032 would probably work also sketch thread rubberbands shown foreshortened fuse actually up close CG Use smallest fuse can obtain Try various twines down local hardware store get skinny rubberbands make Get toy balloon long thin type about inch wide straight deflated Fold piece bond paper half stick balloon inside cut through whole sandwich using sharp scissors 10 minutes youll have years supply hooks bent glass-head pins sure DT rubberband stands away snuffer tube good A6 else fuse might get snuffed before gummyband gets gum enough fracture Fringe benefit See thing called stop sketch model piece /32 x 1-in basswoodmodel railroad stockpoked through slot whittled through fuselage Balsa pads glued bottom limit leading-edge-up position stab can whittled away built up adjust angle incidence Youll probably want add stop some sort limit DT position stab too Bob Meuser 4200 Gregory St Oakland CA 94619 Profile SmoothielKruse Continued page 77 Epox-o-Lite wet index finger quick-and-dirty finishing method would totally unacceptable fullblown competition Stunter its good way go everyday fun-type ship like Profile Smoothie have Ag-Wagon nearly seven years old still looks good cleans up easily due its epoxy/MonoKote finish Flying Smoothie just what ex pected manuevers slow almost stately move through pattern plane bobbles just bit corners did original recall Some theorists attribute wing tip shape Ive never delved find out exact pe culiarity Mostly Im just content en joy flying Smoothie knowing its tory place evolution design hope enjoy too TIGER TAIL 4 Ron Chidgeys latest beat series little larger lighter slower retains honest flight character tistics its predecessors Especially recommended sportsman ad vanced pattern also good choice turn-around pattern Plans construction hints $995 WELLER 3 BLADE PROP very stiff molded fiberglas propellor England Its efficient design allows substantial reduction noise level actually improving per formance $2000 NEW NEW CLAMP IT FOREVER STAINLESS STEEL PIPE CLAMPS Light strong Low-profile seiflocking 3/16 width wont cut 4 silicone couplers Pkg 4 clamps $295 CL ScalelBoss Continued page 78 adjustments best operation doors can made 025 piano wire return springs thickness hardwood block gear leg pushes against Contest report first contest season Northeast featuring CL Scale has termed great success two accounts First turnout about 60 contestants can considered good early date May May 20 sec ondly RC CL Scale Aerobatics events brought together successfully great day flying contest took place Anthony Wayne Recreation Area Bear Mountain State Park New York annual contest usually RC-only affair run Interstate Mod el Flying Club turned combi nation meet effort show pub lic two types flying side-by-side John Caglione IMEC prin cipal organizer meet help George Gaydos Garden State Circle Burners Club getting CL fliers out meet Scale events flown Precision Sport GSCB Profile event scale entry 23 models just great five Precision 10 Sport eight Profile George Gaydos placed first both Precision Profile classes F7F Tigercat Guardian re spectively Steven Macbride took top honors Junior Sport PT-19 pleasure winning Open Sport category Airacobra appears Profile event out lined April 1984 issue MA shows NEW NEW WING TUBE & SOCKETS 1 dia aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing-structure 2024 alum tube 1s24 long socket 12 long $8951 set ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage Cone cone expanding brass ring grips sleeve bearing ID new 60s 17MM rear bearing * Special * Both $1395 See Dealer Order Direct Include 75 Per Item UPS GP Gator RIC Products 3713 Pompano Dr Pensacola FL 32514 Phone AC 904 476-8639 signs having fair participation event first run GSCB Club Fall 83 five contestants noted above eight entered IMFC meet addition seeing modest increase entries heard con siderable talk non-Scalers about might try Profile event certainly easy way introduced Scale modeling contest report can closed thought meet good pub lic saw Aerobatic Scale model flying two different forms -Im sure contestants learned something about other guys choice modeling Pointers finishing Jack Patrolia Marshfield MA says method finishing model components will help Scale modeler obtain better overall mod el finish telling Jacks meth od can termed Back Basics item geared beginner Scale modeling Im sure some experienced build ers will also find informative method described used models dope paint finish applied Jack points out very important part finishing method build sand cover seal fill major components before assembW After construction major com ponents such vertical fin rudder elevator completed should fully sanded sanding complete surfaces part should wet down very damp cloth sponge set aside dry overnight procedure will raise compressed areas balsa surface will ready final sanding 220 grit finer sandpaper sanding complete ap ply coat clear epoxy paint seal strengthen surface After September1984 173 Sleeve Puller $795 Bearing Puller $895 responding advertisers mention read about Model Aviation
Edition: Model Aviation - 1984/09
Page Numbers: 72, 73, 169, 172, 173
Free Flight Duration Bob Meuser COMPUTER bathroom So can chores while. chores dont know about no question computers now dont have live very affluent neighborhood find third kid either has computer has ac cess oneor least programmable calculator Certainly computer age willor might wellhave impact Free Flight count squares graph paper can punch coordi nates wing outline get computer coolie-labor calculating wing area computer age bigger merely Free Flight wouldnt surprised see computer page reg ular feature major modeling maga zines near future have received requests computer programs have sent requests other modelers copies programs. person teacher requested copies programs use conjunction class model airplane building youngsters have computers could use computers solve real-life problems rather sophisticated pinball machines would get better feel what computers about Ive used computers quite bit myself solve model aviation problems feel should some way people have computer programs have facility writing communicate would like have such programs dont have facility writing own dont know start could offer go-between might work can handle some structure formality it might turn chaos big problem stage game programs very portable BASIC program written HP9845 wont run Apple II HP85 version BASIC used IBM-PC wont calculate arc-tan gent Wed need some sort universal language close English lan guage standard mathematical nota tion like Evaluate b/c StOre result register 21 person submitted writeup giving equations used blow-by-blow description modi fied English Ive outlined above printout program mothertongue own computer another person could conceivably make use computer spoke different language Im open suggestions particularly ones likely gain fame glory admirationenvy will pinchof peers oodles coin realm expenditure no effort whatso ever part High-strength solder gave up ordi nary lead-tin solder years ago dis covered Sta-Brite 4% silver 96% tin alloy much stronger Similar solders melting around 440 0F marketed major solder manu facturers Allstate 440 20-yearold supply Sta-Brite finally got used up ordered some Kester silver solder sight unseen mail came first reaction Dang no flux Well discovered solder has flux core will flux work music wire tried uncleaned music wire golly worked although necessary apply heat some time order give flux ample oppor tunity chew through crud wire cleaned 400 sandpaper solder tinned surface immediately stock number 82-5000-0005 Any decent hard ware should stock hobby store does 72 Model Ai~~n Paul Hecman Evanston IL launches old-timer Wakefield replica assigned Dave Copeiand England Streamlineda real classic Photo Dick Stouffer Fly Max almost-ready-to-fly model might turn should good beginners project promptbut Instantgratification virtually guaranteed should go together about hour Advanced builders might wish bit sanding might help performance wee bit Foam used flying surfaces plastic prop supplied Span 15% non-thermal flight times about 40 sec John Voorhees deveioepr manufacturer has built some 98 models least 60 design variations over past year ranging size 8-in span P-30 size developing model appears thoroughly professional job Until wider distribution eta hers becomes established kits can obtained directly manufacturer Prices range $550 kit $4650 twelve shipping cost prepaid US Supplier Fly Max 1429 Fox Dale Place Sidney OhIo 45365 Phone 513 492-8685 Kester will send free booklet called Soldering Simplified send 5O postage handling Kester Solder 4201 Wrightwood Chicago IL 60639 Fifty cents funny kind free anyhow. booklet pretty good know much about soldering wont tell much dont already know Polyhedral parameters John Ferrer tech sort guy innovative model designer President Thunderbugs has come up some notions about polyhedral kinda neat Ferrers First Notion dihedral breaks should lie ellipse shown Figure 1 no theoretical reason gives pleasing results results look about like what lot good model designers have doing tuitively since polyhedral became way go about half-century ago us old folks have heard term elliptical dihedral neither John nor have able find aprecise definition thought meant look wing front appears part ellipse continuous dihe dral breaks John thinks term might mean something along lines First Notion Figure 2 shows dimensions modeler would need fully define front view wing dimension semi-span b tip rise angle center tip dimensions c d flat spans Continued page 169 fqi Ferre*-s frst Notion 6 LI - - C Fig 2 Nonincfature- incredible No caption could describe whats going Bob has complete discussion polyhedral-design scheme column along definitions letters Pres Bruning Royal Oak Ml has built some wierd stuff Plane left canard has no forward flying surface Well maybe canard French duck goose photo bit busy cant see detailsbut appears pusher flying wing other two planes R also Bostonian Cabin shipsand nearest camera sport scale fruit flyl wing sweeps forward stab sweeps strongly aft Canard photo Paul M Smith fruit fly photo Mike Weishans September 1984 73 Jim MoDermoths electric-powered model won 1983 US FF Champs Power ungeared Astro 02 Tony Naccarato photo Heres Bobs neat scheme putting DT small Scale model info column pending upon type rubber used prop run typically 20 25 seconds though model gets quite high will come down fast unless ther mal contest flying practice picking good air well trimming model Good Flying FF IndoorlTenny Continued page 71 new high-tech material requires some special handling and/or building techniques race develop reliable low-weight building methods us ing materials Help using carbon boron fibers new plastic films other materials improve models tell us about word warning Howard Haupt editor El Torbellino newsletter San Diego Orbiteers very recent issue printed following warning Boron glass-like material can very brittle Being brittle can shatter cause small sharp slivers slivers can penetrate skin ease will work themselves back surface Once under skin slivers least minor irritant worst danger heart lungs work way bloodstream Modern boron fiber pretty well behaved will break cleanly bent sharply pliers must take care dispose scrap ends broken off Little pieces boron cannot left laying about worktable floor Two ways discussed ensure proper disposal boron scrap ends have small bottle table repository boron scrap work material As break end off pliers continue grip pliers drop bottle Two place masking tape end boron trimming After breaking off end tape attached dispose wastepaper basket Bostonian year Manhattan Cabin became official event rush set records four AMA ceiling categories three age classes uni fies activity standard rules Now Ed Whittens New York door Times get set official rules Bostonian Cabin 1 Maximum projected wingspans 16 maximum wing chord 3 2 Maximum propellers diameter 6 3 Power limited rubber motors 4 All surfaces double-covered 5 Minimum weight rubber motors 7 grams 6 Maximum overall length 14 excluding propellers 7 Fuselage must contain exceed theoretical box measuring 1 x 2A x 3 longerons must both supNow Kit Form Save easy assemble 4 channel kit expandable 71 OnlyS 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos V 4UOmAH battery pack I600mAH ft 1200mAH extral Expandable port motor form exceed box requirement No motor sticks allowed Fuselage must have forward windshield window side least square inch area 8 Landing Gear must fixed least two wheels Y4-in minimum diam eter rigid enough successfully sup port model hand-glided landing 9 Rise Off Ground least two wheels required takeoffs official flights 10 Charisma FactorThe judge rates model model appeals him based construction neatness scalelike details unique features design etc 100 rating up 130 used Two models may given same rating models rated against other against 100 130 scale 11 An unlimited number flights allowed total full seconds three best flights multiplied Charisma Factor determining models score 12 More model may entered prize entrant will awarded Ed Whitten has said Bostonian Cabin models Flying Scale models . except no full-sized mancarrying version Two photos models built some time back John Triolo shown perhaps can see what Ed means might notice design feature two modelsJohn clever ly arranged designs accommodate full-length motors best rubber usage Bedford reg ulars sessions Bedford Boys Ranch Bedford TX Al Backstrom Frisco TX Al flies some Indoor Scale flying wing models really fun $11995 wIth large lInear serve $12995 maK rotary servos Send 8Sf let cemplete catuleg 509 4S72 122 watch model launching photo flying-plank style use nothing except reflex airfoil stability model doesnt seem lack stability can hit ceiling recover very little loss alti tudefar better Scale models better some serious Indoor models Bud Tenny PO Box 545 Richardson TX 75080 FF DurationlMeuser Continued page 73 inner tip wing panels angles B D angles need know setting ribs adjacent dihe dral breaks sanding proper angle dimensions m h amounts prop up end panel gluing end another scenarios involving considerable trial-and-error modelers arrive final dimensions wings Ferrers Second Notion seems pretty good what model designer would really like 1 establish semi-span tip angle 2 establish ratio c d 3 invoke Ferrers First Notion about ellipse business other numbers interest should fall out onto floor ratio c d Well suppose decide rib spacing uniform throughout wing previous experience perhaps simply wild guess decide tip panel should have six rib spaces inner panel should have 10 c/d John calls R simply 10/6 Continued page 172 September 1984 169 Full Command Systems 908 E Rosewood Spokane WA 99208 SRatteries Hot Line 0 Save new Hot Line phone number order ask technical questions about finest RIG battery packs made Call Monday Friday between 9 am 2 pm Eastern time now accept Visa Mastercard UPS COD orders SR Batteries Inc Box 287 Beilport New York 11713 FF DuratonlMeuser Continued page 169 Given scenario constraints skilled draftsman could come up answers about 20 minutes Consid ering will cost modeler some 20 hours build model thats too high price Well John ol Bob havent quite run out notions yet Ferrers Third Notion First Kind trial-and-error program could poked programmable calculator would make short work whole busi ness has done Ferrers Third Notion Second Kind sophisticated pro grammable calculator capable looping branching stupidest computer town could trial-and-error messing around make shorter work Meusers First Notion some Ferrers Complete Notions could packaged up form tables graphs could present column person lacking drafting calcu tational skills facilities inclinations could simply pluck desired num bers graphs tables Well ol Bob dusted off trusty tarnished computeran early steam-powered affairfired boiler programmed up Johns formulas came up whole bunch numbers Unfortunately however results cant compressed point would fit column still read able Perhaps will appear NFFS Digest NFFS Sympo Report some time perhaps Meanwhile youll send self-addressed envelopeat least legal size preferably 6 x 9-in larger 54 worth stamps enough three ouncesIll send three ounces worth whatever happen have hand time else can get 54-worth material 544 nowadays Boron filament tenlfic stuffbut certain dangers associated using latest high-technology material used modelers unlikely lot will ever used usbut better watch out colleague crime Bud Tenny quotes very interesting article authored Howard Haupt has appeared sev eral FF newsletters including own El Torbellino another called Bugs Buzz Since can just flip back couple pages read thing Buds FE Indoor column Ill repeat However potential dangers new material great Id better make sum mary boron filaments come long pieces cut desired size efficient method break off piece using pair pliers Since stuff brittle other methods may leave tiny glass-sharp shards lying around shards can easily penetrate skin will work themselves back sur face As can imagine merely stay place annoying irritants However can work themselves bloodstream get brain heart lungs would bad news moral leave broken ends lying aroundhave jar other sealable container workbench broken ends can dropped direct ly pliers tab masking tape attached end broken off may also aid retaining small piece should put wastebasket other suitable container Reconstituted goofer feathers potential balsa substitute John Oldenkamp sent sample material called Artcor seems might have some poten tial Free Flight construction material consists foam core faced both sides tough water-resistant mater ial name fact adver tising says pH neutral indi cates intended art applica tions artsy-craftsy outfits neighborhooda hotbed artsy craftsy activitycarries stuff also advertised scorable die cuttable thats word printable say nothing its being capable standing numerous tortures like last part So perhaps intended some sort fancy-pants packaging appli cations live cant possibly characterized hotbed packaging applications didnt pursue avenue short dont know can get stuff smallest sheet size 40 x 60 smallest pack 50 sheets/carton wholesale route average kid out boon ies would keep him Orbiteer ribs next 40 years rate Orbiteer per week Perhaps someone commercial twist mind will see fit J whack up 12 x 24 sheets triple wholesale price efforts would make still best bargain town us kids out boonies peddle off under some goofy housebrand name such Goofer-board gain himself copious quantities fame fortune coin realm thereby Thicknesses ensi ty sample /16 material re ceived about 15 lb/cu ft Compared balsa density Id guess foam stuff far weaker balsa grain perhaps bit stronger across grain So using substitute /32 ribs Id inclined use / materialbut beef up bit /16 x 4 hard balsa toward trailing edge example stuff fails simply folding crunching balsa does using entirely different ball game primary source Amoco Foam Products Co Atlanta GA 30339 So whats business about goofer feathers According 78 rpm records vast collection under name Amos Andy produced late Twenties goofer-feathers fuzz peaches Oh soft Now Im implying Artcor real ly made goofer feathers other hand Im surely going toler ate suede-shoe out-of-towners mess ing peach trees Fuse DT small scale sport models model worth building worth little effort get back after flight rig ging dethermalizer small Scale model can chore rather simple lash-up Ive used small pro file model principle could applied fuselage models well negli 172 Model Aviation gible loss scale fidelity sketch almost self-explanatory trick pivot entire horizontal tail about mid-chord sketch show round toothpick used axle used bamboo carefully rounded tapered Music wire say about 032 would probably work also sketch thread rubberbands shown foreshortened fuse actually up close CG Use smallest fuse can obtain Try various twines down local hardware store get skinny rubberbands make Get toy balloon long thin type about inch wide straight deflated Fold piece bond paper half stick balloon inside cut through whole sandwich using sharp scissors 10 minutes youll have years supply hooks bent glass-head pins sure DT rubberband stands away snuffer tube good A6 else fuse might get snuffed before gummyband gets gum enough fracture Fringe benefit See thing called stop sketch model piece /32 x 1-in basswoodmodel railroad stockpoked through slot whittled through fuselage Balsa pads glued bottom limit leading-edge-up position stab can whittled away built up adjust angle incidence Youll probably want add stop some sort limit DT position stab too Bob Meuser 4200 Gregory St Oakland CA 94619 Profile SmoothielKruse Continued page 77 Epox-o-Lite wet index finger quick-and-dirty finishing method would totally unacceptable fullblown competition Stunter its good way go everyday fun-type ship like Profile Smoothie have Ag-Wagon nearly seven years old still looks good cleans up easily due its epoxy/MonoKote finish Flying Smoothie just what ex pected manuevers slow almost stately move through pattern plane bobbles just bit corners did original recall Some theorists attribute wing tip shape Ive never delved find out exact pe culiarity Mostly Im just content en joy flying Smoothie knowing its tory place evolution design hope enjoy too TIGER TAIL 4 Ron Chidgeys latest beat series little larger lighter slower retains honest flight character tistics its predecessors Especially recommended sportsman ad vanced pattern also good choice turn-around pattern Plans construction hints $995 WELLER 3 BLADE PROP very stiff molded fiberglas propellor England Its efficient design allows substantial reduction noise level actually improving per formance $2000 NEW NEW CLAMP IT FOREVER STAINLESS STEEL PIPE CLAMPS Light strong Low-profile seiflocking 3/16 width wont cut 4 silicone couplers Pkg 4 clamps $295 CL ScalelBoss Continued page 78 adjustments best operation doors can made 025 piano wire return springs thickness hardwood block gear leg pushes against Contest report first contest season Northeast featuring CL Scale has termed great success two accounts First turnout about 60 contestants can considered good early date May May 20 sec ondly RC CL Scale Aerobatics events brought together successfully great day flying contest took place Anthony Wayne Recreation Area Bear Mountain State Park New York annual contest usually RC-only affair run Interstate Mod el Flying Club turned combi nation meet effort show pub lic two types flying side-by-side John Caglione IMEC prin cipal organizer meet help George Gaydos Garden State Circle Burners Club getting CL fliers out meet Scale events flown Precision Sport GSCB Profile event scale entry 23 models just great five Precision 10 Sport eight Profile George Gaydos placed first both Precision Profile classes F7F Tigercat Guardian re spectively Steven Macbride took top honors Junior Sport PT-19 pleasure winning Open Sport category Airacobra appears Profile event out lined April 1984 issue MA shows NEW NEW WING TUBE & SOCKETS 1 dia aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing-structure 2024 alum tube 1s24 long socket 12 long $8951 set ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage Cone cone expanding brass ring grips sleeve bearing ID new 60s 17MM rear bearing * Special * Both $1395 See Dealer Order Direct Include 75 Per Item UPS GP Gator RIC Products 3713 Pompano Dr Pensacola FL 32514 Phone AC 904 476-8639 signs having fair participation event first run GSCB Club Fall 83 five contestants noted above eight entered IMFC meet addition seeing modest increase entries heard con siderable talk non-Scalers about might try Profile event certainly easy way introduced Scale modeling contest report can closed thought meet good pub lic saw Aerobatic Scale model flying two different forms -Im sure contestants learned something about other guys choice modeling Pointers finishing Jack Patrolia Marshfield MA says method finishing model components will help Scale modeler obtain better overall mod el finish telling Jacks meth od can termed Back Basics item geared beginner Scale modeling Im sure some experienced build ers will also find informative method described used models dope paint finish applied Jack points out very important part finishing method build sand cover seal fill major components before assembW After construction major com ponents such vertical fin rudder elevator completed should fully sanded sanding complete surfaces part should wet down very damp cloth sponge set aside dry overnight procedure will raise compressed areas balsa surface will ready final sanding 220 grit finer sandpaper sanding complete ap ply coat clear epoxy paint seal strengthen surface After September1984 173 Sleeve Puller $795 Bearing Puller $895 responding advertisers mention read about Model Aviation