Free Flight OLD- TIMER Clarence Haught GRAVITY As general rule center gravity CG locations omitted Old-Timer plans modern day Free Flighters trying hand OT confused Establish ing CG locations similar todays AMA gas ships disastrous general rule balance cabin models 3 wing chord aft leading edge pylon models 2 chord good starting point basic difference between types due difference stabilizer airfoils Most cabin ships employ streamline- symmetrical-type stab air foils pylon ships tend use flat-bottom lifting airfoils lift generated stab further aft CG can placed Modern Free Flights have relatively large sta bilizers40 percent wing area un common Most Old-Timers around 25 per cent AMA gas jobs often have CG located 75 percent chord aft case Dixielander well-known English design CG aft wing trailing edge say starring point final CG location should established during flight tests Glide trim best adjusted small changes CG Add tail weight slow glide remove tail weight add nose weight steepen glide Reserve stabil izer incidence adjustments regulate climb angle Another general rule Pylon models should climb right cabin models should climb left Engine torque provides natural left-turn ten dency opposite engine rotation force opposed corkscrew-like propeller slipstream works fine long power excessive As power increased attain alti tude models became difficult control Carl Goldbergs pylon developed help control powerful engines being used contest models pylon adds directional stability also provides area slipstream act upon neutralize effects torque gives pylon model its natural right turn tendency Turn climb power portion aid avoiding looping tendencies also assists smooth transition climb glide model trimmed straight-out climb will often stall engine cuts lose great deal altitude before settling glide settles out like control power turn rudder tab Some fliers employ side thrust engine find effective initial slow speeds As model accelerates airflow negates thrust adjustments Climb angle best controlled stabilizer incidence Establish initial setting handgliding increase decrease incidence fine-tune climb Raising trailing edge creases incidence increases climb Modern Free Flight designs made glide circles tilting stabilizer model will turn toward high side stab Just think stabilizer seeking level plane thus tilting wing turn system however ineffective Old-Timers due rela tively small stabilizer areas used lifting stab required effect turn stab tilt use washin induce turn prefer glide same direction climb particu Continued page 151 February 198361 Don Weitz member Vegas Antique Model Plane Society VAMPS adjusts DT rubberbands OS 20-powered Spectre Don plans homestead flying site virtue great amount time spends high-tension iead running plug engine solution tanking front-rotary O&R engine Perfect-brand tank has brass strap soldered front attaches top crankcase bolts keeps tuel draw minimum Keep top tank just below needle valve Don Nordlund builds wings strong Pulling maintenance plane position recommended Dons Playboy Sr wing has built plenty strong take DT landing-loads can stand Most Old-Timer wings need beef-up absorb DT landing shock Simplex Miniature Engines Hornet 19 turning 9-4 prop 10000 rpm 100-deg Taft heat original production run gem now exhausted may resumed demand warrants Paul cont start out glow-type engine suitable sized airplane years OTS winner Nationals Windy Urtnowski advises build Ringmaster All-American El Diablo bolt Fox 35 engine go flying information stunt PA MPA contact Wynn Paul 1640 Maywick Dr. Lexington KY 40S04 FF Old-Timers/Haught Continued page 61 larly helpful launches thermal model will usually stay thermal rather turning out case having opposite glide turn relation climb turn practice wing panel ard turn desired washed traili ig edge down During higher speed climb portion flight lift generated greater drag created washin holds inboard turn wing up maintains climb Remember outboard outside turn wing will moving through air faster inboard wing creating lift out board wing tending roll model toward inboard wing engine stops airspeed decreases washin now creates drag lift thereby inducing turn still generating enough lift nearly equal faster-moving out board wing sounds complicated works summary basic rules trimming OldTimers I Establish basic center gravity 2 Establish basic stabilizer incidence handgliding 3 Regulate climb angle stabilizer incidence 4 Regulate climb turn rudder tab 5 Regulate glide speed minor CG shifts 6 Regulate glide turn washin Wing warps easily added removed holding surface over pan boiling water surface covered silk silkspan tissue twisting desired direction moment removing surface cooling rubbing across leg fine initial settings what field can adjust warps fairly well heating surface exhaust automobilejust sure avoid breathing An alternate warping secure length shaped trailing edge stock bottom wing trailing edge sharp edge forward method efficient washin due resulting thick trailing edge adds drag much lift easy add field New kit SAM gave its approval 70 percent Buzzard Bombshell official SAM competition 4Ks Models lost no time producing kit model has 504-in wingspan recommended 19 29 engines kit fea tures sanded wing ribs formers fuselage sides formed landing gear select balsa cut Sal Taibi Superior Aircraft Balsa todays prices its price 3995 reasonable Four Ks Models 4202 W 172 St Torrance CA 90504 also produces five other Old-Timer kits 72-in Buzzard Bombshell 36-in Baby Bomb shell 73-in Denny Junior Power fliers Korda Wakefield Lamb Climber rubber Try dealer first Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Star versatile airplane beginners experienced pilots alike First-time pilots might want build Star tricycle landing gear rubber band held down wing plenty dihedral docile 19 engine 3-channel radio setup experienced flyers will want set up taildragger ailerons no dihedral bolt down wing hot 40 powerplant Beyond you can choose three different wingtip configurations cub style STOL standard parts Simple box type fuselage construction allows fast building plenty room 3 4 channels radio equipment Landing gear wires prebent machined die cut plywood balsa parts assure accuracy Wing leading edges preshaped step-by-step construction manual highly detailed photographs drawings complement full size plans Flying Star real thrill Orbine has produced plane built trainer simple easy fly forgiving characteristics hotter configuration will bore holes sky Wing span 58 Length 48 Wing area 652 sq inFlying weight 4 lbs Versaf rLu AR hick doesnt end plane leaves ground irUneAircraft Mfrs PO Box 12501 Salem Oregon 97309 362-1606 FF Indoor/Tenny Continued page 60 offset note posts go through mount block angle 1/16 balsa crosspiece serves feet wing assembly removed box during model assembly contest Also photo another plastic foam block holding prop writing prop spar identify prop Marking props other model components excel lent idea since helps avoid mistakes assembling models youre hurry Another approach fourth photo shows box used Sal Cannizzo Staten Island NY 1972 Cardington World Champs basic design has around long time also very useful box consists three pieces hinged together two end pieces form box themselves center piece hollow shell center web usual mount ing scheme shown wings end pieces motorstick/tail group mounted center web box also covered plastic foam help cushion box handling shocks later innovation helped overseas travelers customs stations battery-powered interior light thick plastic windows box allow customs officers see box contents its being opened Club meeting fun model clubs country have mini-contests wind up meet ing nights perhaps get members out meetings San Diego Orbiteers have particularly innovative area other clubs may wish try something similar example contests have included miniature February 1983 151 flying youre a beginner Il/C can thank lucky star OrLine hobby shop doesnt have OrLine kit want call us well tell get D3C LABS Helicopter Fuselage Kits True Scale Design Necessary Hardware Lightweight Epoxyglass Highest Quality Dealers & Manufacturer Inquiries Welcome Bell 222 Hughes 500 D-60 Heliboy Competitor Kavan Kalt Hughes 500 D-40 Miniboy Kalt-20 Custom Fabrication & House Tooling Available Manufacturers DC Labs 207 SW 41st St Renton WA 98055 206 251-9553 rubber-powered models built A-6 mulaabout half size Easy B strict size Construction limitations A-6 models usually flown gymnasium times around three minutes per flight Orbiteers also have annual paper asrplane contest two classes Design class airplanes built particular plan club furnishing instructions materials second class Free Form limits entry being constructed 8-I / 2 o II sheet paper Tape glue paper clips can used paper can cut spliced necessary fulfill fliers creative urge other Orbiteer event 6-in span Hand Launched Gliders usually flown very low ceilings Another event apparently tried Orbiteers Matchbox Model event usual rule specify model must fit ordinary kitchen matchbox assembled ready fly Any type model either glider power can used single high-time being winner limited model Several years ago Tech Model Aircrafters MIT club originated Professor Larrabee Aeronautical Engineer ing department flew what could ultimate encouraging innovative model design class contestant furnished following materials piece / 32 sheet balsa 12-in long piece / 8 114 balsa 12-in long 6-in diameter plastic prop shaft aluminum tubing prop bearing thread glue idea design model ahead time build contest materials provided event has produced number very unusual designs past sounds like real fun thing Much innovation comes pre-planning cut sheet balsa get best usage wood still produce winning model Florida contests Miami Indoor Aircraft Modelers Association M IAMA first all-Indoor clubs nation holds Indoor contests fly-ins almost year around 1983 season schedule includes series contests Miami Dade South College January 16 February 27 March 27 April 24 1983 meets run Sunday 9am 5pm addition club usually has fly-in other sites area group flies Peanut Scale AMA Scale Easy B Pennyplane HLG occasionally other events such ROG Bud Tenor PO Box 545 Richardson TX 75080 Great Race/Pruss Continued page 87 Greater Detroits Soaring Hiking Society de-emphasized hiking part title put two flights back-to-back 17 14 miles team included Jeff Jerry Mrlik Warren Tiahrt Dave Corven Erich Kugler Dale Martell covered course using 14 launches won race four hours 13 minutes RC Soaring hasnt same since 1978 art multiple launching began overshadow flying aspect event on-course relaunch rule eliminated Relaunches permitted back start line 1979 After wins SOAR 1977 1978 Greater Detroit gang began threeyear domination event record run 213 miles three hours 32 minutes bettered 1980 304 miles three hours 18 minutes Bad weather literally put damper two-day event 1981 Greater Detroit group found air good enough PRODUCTS FOR LSC nCPCOUhMfl UAflflPI CU Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers * Helicopter Ball Mufflers * Specialized Exhaust Systems Unsurpasd Woknan*hin b Performance SUPER JET REGULAR JET New E-Z Use bottles New long TAPERED nozzle gels rid major instant glue irritantit hardly i/ever clogs jilt does pin clears 2 diately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealer-he has now CHECK OUT THESE NEW LOW PRICES SUPER JETREGULAR JET V oo No383 0195 00 No 385 8195 i o0 No 384 $205 00 No 388 9295 100 No 382 $4981 oo No 381 $496 200 No 388 09952 00 No 3878896 152 Model Aviation UtLL e2 BALANCE mALL Heres tire equipment need give f ur props very hest halance--halarce m oil directioes Careltdly crafted top grade materials BUB&E BALANCER accomodates 3/161/46/32 prop holes Other sizes availatle 00 SpeCi8l order lalers malted $1695 Add $150 HOWARD B HUEBL DEPT 805 postage lraroig hi Anv add 4%sales tar No CODs Sor 82 8 Monkato MN 56001
Edition: Model Aviation - 1983/02
Page Numbers: 61, 151, 152
Free Flight OLD- TIMER Clarence Haught GRAVITY As general rule center gravity CG locations omitted Old-Timer plans modern day Free Flighters trying hand OT confused Establish ing CG locations similar todays AMA gas ships disastrous general rule balance cabin models 3 wing chord aft leading edge pylon models 2 chord good starting point basic difference between types due difference stabilizer airfoils Most cabin ships employ streamline- symmetrical-type stab air foils pylon ships tend use flat-bottom lifting airfoils lift generated stab further aft CG can placed Modern Free Flights have relatively large sta bilizers40 percent wing area un common Most Old-Timers around 25 per cent AMA gas jobs often have CG located 75 percent chord aft case Dixielander well-known English design CG aft wing trailing edge say starring point final CG location should established during flight tests Glide trim best adjusted small changes CG Add tail weight slow glide remove tail weight add nose weight steepen glide Reserve stabil izer incidence adjustments regulate climb angle Another general rule Pylon models should climb right cabin models should climb left Engine torque provides natural left-turn ten dency opposite engine rotation force opposed corkscrew-like propeller slipstream works fine long power excessive As power increased attain alti tude models became difficult control Carl Goldbergs pylon developed help control powerful engines being used contest models pylon adds directional stability also provides area slipstream act upon neutralize effects torque gives pylon model its natural right turn tendency Turn climb power portion aid avoiding looping tendencies also assists smooth transition climb glide model trimmed straight-out climb will often stall engine cuts lose great deal altitude before settling glide settles out like control power turn rudder tab Some fliers employ side thrust engine find effective initial slow speeds As model accelerates airflow negates thrust adjustments Climb angle best controlled stabilizer incidence Establish initial setting handgliding increase decrease incidence fine-tune climb Raising trailing edge creases incidence increases climb Modern Free Flight designs made glide circles tilting stabilizer model will turn toward high side stab Just think stabilizer seeking level plane thus tilting wing turn system however ineffective Old-Timers due rela tively small stabilizer areas used lifting stab required effect turn stab tilt use washin induce turn prefer glide same direction climb particu Continued page 151 February 198361 Don Weitz member Vegas Antique Model Plane Society VAMPS adjusts DT rubberbands OS 20-powered Spectre Don plans homestead flying site virtue great amount time spends high-tension iead running plug engine solution tanking front-rotary O&R engine Perfect-brand tank has brass strap soldered front attaches top crankcase bolts keeps tuel draw minimum Keep top tank just below needle valve Don Nordlund builds wings strong Pulling maintenance plane position recommended Dons Playboy Sr wing has built plenty strong take DT landing-loads can stand Most Old-Timer wings need beef-up absorb DT landing shock Simplex Miniature Engines Hornet 19 turning 9-4 prop 10000 rpm 100-deg Taft heat original production run gem now exhausted may resumed demand warrants Paul cont start out glow-type engine suitable sized airplane years OTS winner Nationals Windy Urtnowski advises build Ringmaster All-American El Diablo bolt Fox 35 engine go flying information stunt PA MPA contact Wynn Paul 1640 Maywick Dr. Lexington KY 40S04 FF Old-Timers/Haught Continued page 61 larly helpful launches thermal model will usually stay thermal rather turning out case having opposite glide turn relation climb turn practice wing panel ard turn desired washed traili ig edge down During higher speed climb portion flight lift generated greater drag created washin holds inboard turn wing up maintains climb Remember outboard outside turn wing will moving through air faster inboard wing creating lift out board wing tending roll model toward inboard wing engine stops airspeed decreases washin now creates drag lift thereby inducing turn still generating enough lift nearly equal faster-moving out board wing sounds complicated works summary basic rules trimming OldTimers I Establish basic center gravity 2 Establish basic stabilizer incidence handgliding 3 Regulate climb angle stabilizer incidence 4 Regulate climb turn rudder tab 5 Regulate glide speed minor CG shifts 6 Regulate glide turn washin Wing warps easily added removed holding surface over pan boiling water surface covered silk silkspan tissue twisting desired direction moment removing surface cooling rubbing across leg fine initial settings what field can adjust warps fairly well heating surface exhaust automobilejust sure avoid breathing An alternate warping secure length shaped trailing edge stock bottom wing trailing edge sharp edge forward method efficient washin due resulting thick trailing edge adds drag much lift easy add field New kit SAM gave its approval 70 percent Buzzard Bombshell official SAM competition 4Ks Models lost no time producing kit model has 504-in wingspan recommended 19 29 engines kit fea tures sanded wing ribs formers fuselage sides formed landing gear select balsa cut Sal Taibi Superior Aircraft Balsa todays prices its price 3995 reasonable Four Ks Models 4202 W 172 St Torrance CA 90504 also produces five other Old-Timer kits 72-in Buzzard Bombshell 36-in Baby Bomb shell 73-in Denny Junior Power fliers Korda Wakefield Lamb Climber rubber Try dealer first Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Star versatile airplane beginners experienced pilots alike First-time pilots might want build Star tricycle landing gear rubber band held down wing plenty dihedral docile 19 engine 3-channel radio setup experienced flyers will want set up taildragger ailerons no dihedral bolt down wing hot 40 powerplant Beyond you can choose three different wingtip configurations cub style STOL standard parts Simple box type fuselage construction allows fast building plenty room 3 4 channels radio equipment Landing gear wires prebent machined die cut plywood balsa parts assure accuracy Wing leading edges preshaped step-by-step construction manual highly detailed photographs drawings complement full size plans Flying Star real thrill Orbine has produced plane built trainer simple easy fly forgiving characteristics hotter configuration will bore holes sky Wing span 58 Length 48 Wing area 652 sq inFlying weight 4 lbs Versaf rLu AR hick doesnt end plane leaves ground irUneAircraft Mfrs PO Box 12501 Salem Oregon 97309 362-1606 FF Indoor/Tenny Continued page 60 offset note posts go through mount block angle 1/16 balsa crosspiece serves feet wing assembly removed box during model assembly contest Also photo another plastic foam block holding prop writing prop spar identify prop Marking props other model components excel lent idea since helps avoid mistakes assembling models youre hurry Another approach fourth photo shows box used Sal Cannizzo Staten Island NY 1972 Cardington World Champs basic design has around long time also very useful box consists three pieces hinged together two end pieces form box themselves center piece hollow shell center web usual mount ing scheme shown wings end pieces motorstick/tail group mounted center web box also covered plastic foam help cushion box handling shocks later innovation helped overseas travelers customs stations battery-powered interior light thick plastic windows box allow customs officers see box contents its being opened Club meeting fun model clubs country have mini-contests wind up meet ing nights perhaps get members out meetings San Diego Orbiteers have particularly innovative area other clubs may wish try something similar example contests have included miniature February 1983 151 flying youre a beginner Il/C can thank lucky star OrLine hobby shop doesnt have OrLine kit want call us well tell get D3C LABS Helicopter Fuselage Kits True Scale Design Necessary Hardware Lightweight Epoxyglass Highest Quality Dealers & Manufacturer Inquiries Welcome Bell 222 Hughes 500 D-60 Heliboy Competitor Kavan Kalt Hughes 500 D-40 Miniboy Kalt-20 Custom Fabrication & House Tooling Available Manufacturers DC Labs 207 SW 41st St Renton WA 98055 206 251-9553 rubber-powered models built A-6 mulaabout half size Easy B strict size Construction limitations A-6 models usually flown gymnasium times around three minutes per flight Orbiteers also have annual paper asrplane contest two classes Design class airplanes built particular plan club furnishing instructions materials second class Free Form limits entry being constructed 8-I / 2 o II sheet paper Tape glue paper clips can used paper can cut spliced necessary fulfill fliers creative urge other Orbiteer event 6-in span Hand Launched Gliders usually flown very low ceilings Another event apparently tried Orbiteers Matchbox Model event usual rule specify model must fit ordinary kitchen matchbox assembled ready fly Any type model either glider power can used single high-time being winner limited model Several years ago Tech Model Aircrafters MIT club originated Professor Larrabee Aeronautical Engineer ing department flew what could ultimate encouraging innovative model design class contestant furnished following materials piece / 32 sheet balsa 12-in long piece / 8 114 balsa 12-in long 6-in diameter plastic prop shaft aluminum tubing prop bearing thread glue idea design model ahead time build contest materials provided event has produced number very unusual designs past sounds like real fun thing Much innovation comes pre-planning cut sheet balsa get best usage wood still produce winning model Florida contests Miami Indoor Aircraft Modelers Association M IAMA first all-Indoor clubs nation holds Indoor contests fly-ins almost year around 1983 season schedule includes series contests Miami Dade South College January 16 February 27 March 27 April 24 1983 meets run Sunday 9am 5pm addition club usually has fly-in other sites area group flies Peanut Scale AMA Scale Easy B Pennyplane HLG occasionally other events such ROG Bud Tenor PO Box 545 Richardson TX 75080 Great Race/Pruss Continued page 87 Greater Detroits Soaring Hiking Society de-emphasized hiking part title put two flights back-to-back 17 14 miles team included Jeff Jerry Mrlik Warren Tiahrt Dave Corven Erich Kugler Dale Martell covered course using 14 launches won race four hours 13 minutes RC Soaring hasnt same since 1978 art multiple launching began overshadow flying aspect event on-course relaunch rule eliminated Relaunches permitted back start line 1979 After wins SOAR 1977 1978 Greater Detroit gang began threeyear domination event record run 213 miles three hours 32 minutes bettered 1980 304 miles three hours 18 minutes Bad weather literally put damper two-day event 1981 Greater Detroit group found air good enough PRODUCTS FOR LSC nCPCOUhMfl UAflflPI CU Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers * Helicopter Ball Mufflers * Specialized Exhaust Systems Unsurpasd Woknan*hin b Performance SUPER JET REGULAR JET New E-Z Use bottles New long TAPERED nozzle gels rid major instant glue irritantit hardly i/ever clogs jilt does pin clears 2 diately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealer-he has now CHECK OUT THESE NEW LOW PRICES SUPER JETREGULAR JET V oo No383 0195 00 No 385 8195 i o0 No 384 $205 00 No 388 9295 100 No 382 $4981 oo No 381 $496 200 No 388 09952 00 No 3878896 152 Model Aviation UtLL e2 BALANCE mALL Heres tire equipment need give f ur props very hest halance--halarce m oil directioes Careltdly crafted top grade materials BUB&E BALANCER accomodates 3/161/46/32 prop holes Other sizes availatle 00 SpeCi8l order lalers malted $1695 Add $150 HOWARD B HUEBL DEPT 805 postage lraroig hi Anv add 4%sales tar No CODs Sor 82 8 Monkato MN 56001
Edition: Model Aviation - 1983/02
Page Numbers: 61, 151, 152
Free Flight OLD- TIMER Clarence Haught GRAVITY As general rule center gravity CG locations omitted Old-Timer plans modern day Free Flighters trying hand OT confused Establish ing CG locations similar todays AMA gas ships disastrous general rule balance cabin models 3 wing chord aft leading edge pylon models 2 chord good starting point basic difference between types due difference stabilizer airfoils Most cabin ships employ streamline- symmetrical-type stab air foils pylon ships tend use flat-bottom lifting airfoils lift generated stab further aft CG can placed Modern Free Flights have relatively large sta bilizers40 percent wing area un common Most Old-Timers around 25 per cent AMA gas jobs often have CG located 75 percent chord aft case Dixielander well-known English design CG aft wing trailing edge say starring point final CG location should established during flight tests Glide trim best adjusted small changes CG Add tail weight slow glide remove tail weight add nose weight steepen glide Reserve stabil izer incidence adjustments regulate climb angle Another general rule Pylon models should climb right cabin models should climb left Engine torque provides natural left-turn ten dency opposite engine rotation force opposed corkscrew-like propeller slipstream works fine long power excessive As power increased attain alti tude models became difficult control Carl Goldbergs pylon developed help control powerful engines being used contest models pylon adds directional stability also provides area slipstream act upon neutralize effects torque gives pylon model its natural right turn tendency Turn climb power portion aid avoiding looping tendencies also assists smooth transition climb glide model trimmed straight-out climb will often stall engine cuts lose great deal altitude before settling glide settles out like control power turn rudder tab Some fliers employ side thrust engine find effective initial slow speeds As model accelerates airflow negates thrust adjustments Climb angle best controlled stabilizer incidence Establish initial setting handgliding increase decrease incidence fine-tune climb Raising trailing edge creases incidence increases climb Modern Free Flight designs made glide circles tilting stabilizer model will turn toward high side stab Just think stabilizer seeking level plane thus tilting wing turn system however ineffective Old-Timers due rela tively small stabilizer areas used lifting stab required effect turn stab tilt use washin induce turn prefer glide same direction climb particu Continued page 151 February 198361 Don Weitz member Vegas Antique Model Plane Society VAMPS adjusts DT rubberbands OS 20-powered Spectre Don plans homestead flying site virtue great amount time spends high-tension iead running plug engine solution tanking front-rotary O&R engine Perfect-brand tank has brass strap soldered front attaches top crankcase bolts keeps tuel draw minimum Keep top tank just below needle valve Don Nordlund builds wings strong Pulling maintenance plane position recommended Dons Playboy Sr wing has built plenty strong take DT landing-loads can stand Most Old-Timer wings need beef-up absorb DT landing shock Simplex Miniature Engines Hornet 19 turning 9-4 prop 10000 rpm 100-deg Taft heat original production run gem now exhausted may resumed demand warrants Paul cont start out glow-type engine suitable sized airplane years OTS winner Nationals Windy Urtnowski advises build Ringmaster All-American El Diablo bolt Fox 35 engine go flying information stunt PA MPA contact Wynn Paul 1640 Maywick Dr. Lexington KY 40S04 FF Old-Timers/Haught Continued page 61 larly helpful launches thermal model will usually stay thermal rather turning out case having opposite glide turn relation climb turn practice wing panel ard turn desired washed traili ig edge down During higher speed climb portion flight lift generated greater drag created washin holds inboard turn wing up maintains climb Remember outboard outside turn wing will moving through air faster inboard wing creating lift out board wing tending roll model toward inboard wing engine stops airspeed decreases washin now creates drag lift thereby inducing turn still generating enough lift nearly equal faster-moving out board wing sounds complicated works summary basic rules trimming OldTimers I Establish basic center gravity 2 Establish basic stabilizer incidence handgliding 3 Regulate climb angle stabilizer incidence 4 Regulate climb turn rudder tab 5 Regulate glide speed minor CG shifts 6 Regulate glide turn washin Wing warps easily added removed holding surface over pan boiling water surface covered silk silkspan tissue twisting desired direction moment removing surface cooling rubbing across leg fine initial settings what field can adjust warps fairly well heating surface exhaust automobilejust sure avoid breathing An alternate warping secure length shaped trailing edge stock bottom wing trailing edge sharp edge forward method efficient washin due resulting thick trailing edge adds drag much lift easy add field New kit SAM gave its approval 70 percent Buzzard Bombshell official SAM competition 4Ks Models lost no time producing kit model has 504-in wingspan recommended 19 29 engines kit fea tures sanded wing ribs formers fuselage sides formed landing gear select balsa cut Sal Taibi Superior Aircraft Balsa todays prices its price 3995 reasonable Four Ks Models 4202 W 172 St Torrance CA 90504 also produces five other Old-Timer kits 72-in Buzzard Bombshell 36-in Baby Bomb shell 73-in Denny Junior Power fliers Korda Wakefield Lamb Climber rubber Try dealer first Clarence Haught 3226 Honeysuckle Dr Coeur dAlene ID 83814 Star versatile airplane beginners experienced pilots alike First-time pilots might want build Star tricycle landing gear rubber band held down wing plenty dihedral docile 19 engine 3-channel radio setup experienced flyers will want set up taildragger ailerons no dihedral bolt down wing hot 40 powerplant Beyond you can choose three different wingtip configurations cub style STOL standard parts Simple box type fuselage construction allows fast building plenty room 3 4 channels radio equipment Landing gear wires prebent machined die cut plywood balsa parts assure accuracy Wing leading edges preshaped step-by-step construction manual highly detailed photographs drawings complement full size plans Flying Star real thrill Orbine has produced plane built trainer simple easy fly forgiving characteristics hotter configuration will bore holes sky Wing span 58 Length 48 Wing area 652 sq inFlying weight 4 lbs Versaf rLu AR hick doesnt end plane leaves ground irUneAircraft Mfrs PO Box 12501 Salem Oregon 97309 362-1606 FF Indoor/Tenny Continued page 60 offset note posts go through mount block angle 1/16 balsa crosspiece serves feet wing assembly removed box during model assembly contest Also photo another plastic foam block holding prop writing prop spar identify prop Marking props other model components excel lent idea since helps avoid mistakes assembling models youre hurry Another approach fourth photo shows box used Sal Cannizzo Staten Island NY 1972 Cardington World Champs basic design has around long time also very useful box consists three pieces hinged together two end pieces form box themselves center piece hollow shell center web usual mount ing scheme shown wings end pieces motorstick/tail group mounted center web box also covered plastic foam help cushion box handling shocks later innovation helped overseas travelers customs stations battery-powered interior light thick plastic windows box allow customs officers see box contents its being opened Club meeting fun model clubs country have mini-contests wind up meet ing nights perhaps get members out meetings San Diego Orbiteers have particularly innovative area other clubs may wish try something similar example contests have included miniature February 1983 151 flying youre a beginner Il/C can thank lucky star OrLine hobby shop doesnt have OrLine kit want call us well tell get D3C LABS Helicopter Fuselage Kits True Scale Design Necessary Hardware Lightweight Epoxyglass Highest Quality Dealers & Manufacturer Inquiries Welcome Bell 222 Hughes 500 D-60 Heliboy Competitor Kavan Kalt Hughes 500 D-40 Miniboy Kalt-20 Custom Fabrication & House Tooling Available Manufacturers DC Labs 207 SW 41st St Renton WA 98055 206 251-9553 rubber-powered models built A-6 mulaabout half size Easy B strict size Construction limitations A-6 models usually flown gymnasium times around three minutes per flight Orbiteers also have annual paper asrplane contest two classes Design class airplanes built particular plan club furnishing instructions materials second class Free Form limits entry being constructed 8-I / 2 o II sheet paper Tape glue paper clips can used paper can cut spliced necessary fulfill fliers creative urge other Orbiteer event 6-in span Hand Launched Gliders usually flown very low ceilings Another event apparently tried Orbiteers Matchbox Model event usual rule specify model must fit ordinary kitchen matchbox assembled ready fly Any type model either glider power can used single high-time being winner limited model Several years ago Tech Model Aircrafters MIT club originated Professor Larrabee Aeronautical Engineer ing department flew what could ultimate encouraging innovative model design class contestant furnished following materials piece / 32 sheet balsa 12-in long piece / 8 114 balsa 12-in long 6-in diameter plastic prop shaft aluminum tubing prop bearing thread glue idea design model ahead time build contest materials provided event has produced number very unusual designs past sounds like real fun thing Much innovation comes pre-planning cut sheet balsa get best usage wood still produce winning model Florida contests Miami Indoor Aircraft Modelers Association M IAMA first all-Indoor clubs nation holds Indoor contests fly-ins almost year around 1983 season schedule includes series contests Miami Dade South College January 16 February 27 March 27 April 24 1983 meets run Sunday 9am 5pm addition club usually has fly-in other sites area group flies Peanut Scale AMA Scale Easy B Pennyplane HLG occasionally other events such ROG Bud Tenor PO Box 545 Richardson TX 75080 Great Race/Pruss Continued page 87 Greater Detroits Soaring Hiking Society de-emphasized hiking part title put two flights back-to-back 17 14 miles team included Jeff Jerry Mrlik Warren Tiahrt Dave Corven Erich Kugler Dale Martell covered course using 14 launches won race four hours 13 minutes RC Soaring hasnt same since 1978 art multiple launching began overshadow flying aspect event on-course relaunch rule eliminated Relaunches permitted back start line 1979 After wins SOAR 1977 1978 Greater Detroit gang began threeyear domination event record run 213 miles three hours 32 minutes bettered 1980 304 miles three hours 18 minutes Bad weather literally put damper two-day event 1981 Greater Detroit group found air good enough PRODUCTS FOR LSC nCPCOUhMfl UAflflPI CU Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers * Helicopter Ball Mufflers * Specialized Exhaust Systems Unsurpasd Woknan*hin b Performance SUPER JET REGULAR JET New E-Z Use bottles New long TAPERED nozzle gels rid major instant glue irritantit hardly i/ever clogs jilt does pin clears 2 diately Exclusive new bottles give tremendously increased shelf life plus contents visibility See dealer-he has now CHECK OUT THESE NEW LOW PRICES SUPER JETREGULAR JET V oo No383 0195 00 No 385 8195 i o0 No 384 $205 00 No 388 9295 100 No 382 $4981 oo No 381 $496 200 No 388 09952 00 No 3878896 152 Model Aviation UtLL e2 BALANCE mALL Heres tire equipment need give f ur props very hest halance--halarce m oil directioes Careltdly crafted top grade materials BUB&E BALANCER accomodates 3/161/46/32 prop holes Other sizes availatle 00 SpeCi8l order lalers malted $1695 Add $150 HOWARD B HUEBL DEPT 805 postage lraroig hi Anv add 4%sales tar No CODs Sor 82 8 Monkato MN 56001