MAJOR TOPIC October December columns getting started Sport Scale covered basics selecting model find ing documentation Static flight judging also reviewed have written about bellcrank placement past month will explore subject little further based ideas taken Gerry Deneaus continuing series articles CL Sport Scale appearing clubs newsletter Probable Cause Emphasis month will converting RC kit CL use decid ing whether models wing will remov able permanently fixed model Trying determine type bellcrank its location generally first step taken conversion RC kit CL use Should bellcrank installed fuselage wing could dictated models wing configuration high-wing midwing low-wing Another very important consideration whether wing will made removable glued permanently place Because larger size models Scale modelers build ing days removable wing has some dis tinct advantages light ever-diminishing capacities forms transportation Also considered type bellcrank upright inverted mounting direction travel throttle control arm engine permanently fixed fuselage have decide what size style bellerank upright inverted would required pro vide proper direction travel engine throttle control However wing made removable must consider access control rod con nections throttle elevator perhaps flaps Before moving let note October 88 column has extensive information suppose could start assumption Scale models would equipped throttle control operated via three-line bellcrank system Throttle control neces sary obtaining maximum flying points com petition also adds greatly flying enjoy- ontinued page 166 ment model wing regardless model configuration high- mid- low-wing 60 Model Aviation Control Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 Want build Scale model can remove wing ease transport mount bellcrank Bill Boss gives us some answers months column Charles Bauers Norridge IL big Precision Scale prototype Douglas Skyraider won 89 Hats Its big enough removable wing Models electronic control system op erates flaps landing gear throttle Jim McCurrachs North Vancouver BC P 51 Mustang features Canadian markings nicely weathered finish Sport Scale entry 1989 Tn-Cities Nats Gerry Deneau Aurora C0 claims worked Sport Scale Curtiss P-6E tween 1957 198831 years placed Douglas DC-3 other name C-47 third 89 Hats Author Bill Boss has R4D Ken Burtons Roberts WA large based several CL Scale columns Marine R40 large enough candi- Gerrys ideas found club newalet date removable wing Good-flying ter Probable Cause photos Sport Scale entry seen 89 Hats month taken Mike Weishans Peifect Stability gyro output reverse switch neutral adjust trimmer precise rudder servo neutral adjustment Airtronics SC-i Precision Ball Bearing Gyroscope System compact helicopter single axis gyro corates advanced technological features out standing ffight performance andi maneuverability Designed easy instal lation setup adjustment SC-i provides superior stability control demand ing flying conditions economically-priced gyro features ball-bearing equipped gimbal regulated gyro motor voltage supply easy mounting connector system convenient gyro setup LLYr tio N N] SEN OR in-flihtonoff operation dual ~AIRTRONICS sensitivity precision SC-i gyro GYRO MIXER BAIT automatically senses movement directs proper command 96252 appropriate servo N mixer amplifier utilizes automatic power source selector Detection Method Hall Effect Sensor SG-1 G offers perfect blend stability per formance compatibility Airtronics RIC systems Standard RONICSIA 11 Autry Irvine CA 92718714 830-s information about Airtronics quality products please call write address above Bird Prey/Baxter Continued page 58 wings being neutrally stable will continue straight last heading established modification should used Control Line model think Symmetrical wing panels made flown cir cles no outside forces encountered extra tension afforded asymmetrical wing arrangement will hold model course Cutting streamer inboard panel however can cause plane swerve circle cut spar holes through engine mounts slightly oversized way spars can removed replaced fairly easily should wings need replaced Push spars through holes center rib slide wing panels guiding lead-out wires through holes Since wing will instantly fold spars should come loose make sure theyre securely glued cores Add strapping tape trailing edge fantail can now assembled elevator hinged using favorite hinging method Slide fantail over trailing edge wing glue securely stall control horn attach pushrod Adjust pushrod controls 300 total travel Cut leading edge away clear engine add ply firewall Add wing tips ribs braces lead-out guide tubes Running lead-outs through tips creates attractive appearance Resist temptation Instead simply glue lead-out tubes bottom tip have replace wing panel leadouts can easily removed wing tip facilitate sliding new panel over lead-out wires smooth airfoil fill dents de pressions spar/foam junction Magic Model Filler light spackling com pound Cover entire plane Fas-Cal favorite low-temperature covering Adjust center-of-gravity coincide center spar sliding en gine back forth necessary Install engineand again dont forget attach restraint cable Flying Bird Prey gives predictable reliable handling no quirks catch off-guard Properly balanced model both stable responsive Like well-designed flying wing itll stantly snap turn Because its larger size Bird probably wont fast previous modelsbut youll hard-pressed find ship gives tighter turns airplane overly touchy Does hunt yes know its tail-heavy Slug gish turns Its nose heavy Does slow down bounce turns has too much control travel Adjust trim ac cordingly adding nose tail weight ad justing control travel until feels right flying style Tail weight can re duced cutting four 1 /2-in lightening holes fantail Lets see cant spark flying wing re vival Build fly Bird Prey should contention some awesome purses becoming avail able Combat matches around coun try Combat fraternity will take note Good luck happy hunting CL Scale/Boss Continued page 60 sketches three-line belicrank system setup operation Therefore will covering technical aspects three-line system oper ation Referring Sketch wing top fuselage bellcrank should placed fuselage hecause vertical location center-of-gravity model will below wing bellcrank placed wing model would have tendency roll toward center circle during flight As Gerry puts no-no since drooping control lines tend make flier turn prema turely gray cause life expectancy model extremely short should also noted high-wing mod els special lead-out guides must located some near tip inboard wing Making Continued page 168 166 Model Aviation 962S2 SG-I Gyro Specifications Power Supply 4 Cell 48 Volt common power 5 Cell 6 Volt separate power Motor Running Current 130 MA DC Amplifier Current 30 MA DC Dimensions Gyroscopel69 x 48 x 169 Miner Amp244 x 136 x 075 Control Box095x l34x 075 Weight Gyroscope254 ot Miner Ampl09 oz Control Box006 oz wing removable type model does pose control rod disconnect problems unless wing has flaps operational flaps operated mechanically belleranks pushrods special arrangements made disconnecting control rods wing removal operated servo mounted wing disconnection wiring could simple pulling apart Deans-type connector Remember flaps must operate independently throttle control full points AMA Scale competition high-wing configuration poses few problems making wing removable mid- low-wing configurations can require fu selage modifications and/or special access panels disconnecting throttle elevator perhaps flap control rods Now take look Sketch B wing made removable midwing model have two choices mounting bellerank first mount bellerank fuselage above wing thus avoiding disconnect problems throttle elevator control rods wing flaps operational disconnecting flap operating rod could accomplished wing being re moved electrically operated wire disconnect may required second choice mounting bellerank wing creates control rod dis connect problem does permit lead-out wires enclosed wing thereby giving model realistic scale appearance upper lower portion fuse lage dotted lines can made removable facil itate control rod disconnect probably would best make lower portion fuselage wing removable unit Making lower por tion fuselage removable less conspicuous el Access disconnecting control rods de pends use upright inverted bellcrank mounting control rod disconnect can accomplished via cockpit operational canopy upright-mounted bellerank OK operational canopy adds realism mod el inverted bellerank mounting used ac cess control rods can via small remov able panel below bellerank Referring Sketch C shows low-wing configuration found WW II fight ers As midwing configuration bellcrank can installed upright inverted Again access control rod disconnect can via cockpit upright mount via small ac cess panel bottom wing just below bellerank Working flaps gear retraction systems gen erally would pose disconnect problems making wing removable low- midwing model Most mechanical electric-servo flap operating systems usually contained within structure wing high-wing configuration might re quire disconnecting would electrical connec tor have presented some basics making wing removable use upright- inverted-mount bellerank have pur posely omitted discussion installation support bellerank lead-outs information lead-outs must refer September 86 column covered subject great de tail happen new reader col umn will happy send copy either columns mentioned convenience following listing major items have appeared col umn during 1989 1989 Directory of CL Scale Items Model Aviation JanuaryDiscussion complexities Sport Scale event based comments Mike Keville Pro-Stunt Products Line reels other supplies Trophies Jennings 1988 Directory CL Scale Items Model Aviation FebruaryReview CL Scale rules change pro posal 1990-91 rule book Removing old silkspan Gerry Dc neau Return Sterling C-size Scale kits Contest reportGSCB annual Scale meet MarchReport College Aeronautics Flushing NY Open house static show Workshop hint Bob Furr Airfoiled bicycle spokes wing struts wires Visit USAF Museum Wright Patterson AFB Stan Alexander Documentation source Scale Plans Photo Service April Construction three- four168 Model Aviation #1 meter setting proper thiust wing stabillzer kicidence new n7odel detemilning present model doesnt fly staight PIVOTING V-BLOCKS piriper afipiut d Aq mien center lines fits q MAGNIFIED ANTI -PA RA LAX METER SCALE uinn pwnler efiows fine nudel inchbncu 0 gy BUBBLELEVELForqulckendeesy ael-i el meter end eircrelt 9 P0 Box 7247 310 N 5th St St Charles IL 60174 312 584-7616 preserves overall appearance mod- text Please send SASE address given top column bladed Scale propellers Match engine propeller George Lieb May Using 35mm camera reproducing insignias Bob Furr Pro-Stunt Products Engine offset pads Notes NASA June 1989 WRAM Show report Response readers Jan 89 column Scale events July Sport Scale scoresheets Jerry De neau Notes NASA Scale Data Source Committee Gilroy CA MAC Flying Show Michael Hawks August Three-line handle throttle adjuster Mike Welshans Documentation guide Michael Blaugher Metal Mend Tape simulating ac cess panels etc September Getting started Sport Scale select Scale kit build plans finding source data Jerry Deneau Notes NASA need NASA District reps Vend Mount System G&A Prod ucts October Getting started Sport Scale re view static flight judging Gerry Deneau November 1989 Nationals coverage December Discussion Scale rules change 1990-91 Black Decker tools work shops Carl Duggan Mighty Lite plywood new build ing product Please send ideas contest reports especially photos CL Scale address found very top column CL Aerobatics/Fancher Continued page 61 Also Stunt becoming refined Supe rior performances now result piloting skills also expertise allied areas such aircraft design flight trim engines young pilots exceptional reactions usu ally enough overcome advantages experienced fliers other areas early Seventies saw continued diminu tion participation younger fliers still respectable numbersaround eight 15 contestantsearly obvi ously decreasing Open other hand continuing premier CL event culminating 1976 Nats Dayton OH over 80 con testants Open event Still very best youngsters competitive adult fliers shown Walker Cup victory Denny Adamisin believe 1972 76 Dayton Nats seeds modern event sown large num bers contestants spending huge sums money attend Nats question arose whether BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ci receiver battery status press ci button 2Precise Rugged Small Light 1/2 OZ Made USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1608 Poughkeepsle NY 12601 NY Stats residents add sales tax existing format provided reasonable cost/value ratio format still consisted day qualifying vast majority contestants second day qual ifying finals 1976 second round qualifying es sentially blown away Mother Nature As re sult fliers spent big bucks tend Nats enjoyed just eight-minute offi cial flight expenditures thought reasonably sothat cost wasnt justified restricted format Thus born cur rent concept 1977 present have used contin ually refined version four-day format modern fliers familiar consists two full days qualifying day semifi nals top 20 qualifiers Walker Cup flyoff fourth day top five Open pilots winners Junior Sen ior events vie another determine overall National Champion format has proven generally very popular two days qualifying allow much greater level participation entries Open event Although seldom change stand ing between first second day overall benefit additional official flying has eagerly affirmed third fourth days allow very exacting method selecting champion still per mitting up-and-coming stars gratification incentive having qualified Nats downside existing format lengthy costly administer Overall ever format has proven successful popular effective Juniors Seniors unfortunately have taken something back seat adult fliers P06 16 Nun1boDItnSO SO SF350 318 401255 SF400 601255 SF500 260901570 RF600 290121675 RF7SO7W5/32 /S001 1670 RF600 3145 toAScais 170 Model Aviation Revised Lightweight Dual Spoiler ModuleAT 1048 dual spoilers made rigid PVC weigh 3 oz per set cloaed position total overall height 1 4 inches modiflible 1 inch unmodified blades fully extended total overall height le 2% inches modules accuate extremely smooth easily single module 5118 inches thick by6 inches long Modules can ganged end-to-end longer end increased surface area Only *1415 per set Ask local hobby shop today Dealers ask ACE RIC Inc details AL-TEC PRODUCTS INC 18800 St Rt 47E ey OH 45365 513 498-1721 itS 41 nov07 snap 01 owe 011001 600 $200 sitipping und h.ndiingplOSiled Fults Tooling PO Box 95 Champaign IL 61824
Edition: Model Aviation - 1990/01
Page Numbers: 60, 166, 168, 170
MAJOR TOPIC October December columns getting started Sport Scale covered basics selecting model find ing documentation Static flight judging also reviewed have written about bellcrank placement past month will explore subject little further based ideas taken Gerry Deneaus continuing series articles CL Sport Scale appearing clubs newsletter Probable Cause Emphasis month will converting RC kit CL use decid ing whether models wing will remov able permanently fixed model Trying determine type bellcrank its location generally first step taken conversion RC kit CL use Should bellcrank installed fuselage wing could dictated models wing configuration high-wing midwing low-wing Another very important consideration whether wing will made removable glued permanently place Because larger size models Scale modelers build ing days removable wing has some dis tinct advantages light ever-diminishing capacities forms transportation Also considered type bellcrank upright inverted mounting direction travel throttle control arm engine permanently fixed fuselage have decide what size style bellerank upright inverted would required pro vide proper direction travel engine throttle control However wing made removable must consider access control rod con nections throttle elevator perhaps flaps Before moving let note October 88 column has extensive information suppose could start assumption Scale models would equipped throttle control operated via three-line bellcrank system Throttle control neces sary obtaining maximum flying points com petition also adds greatly flying enjoy- ontinued page 166 ment model wing regardless model configuration high- mid- low-wing 60 Model Aviation Control Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 Want build Scale model can remove wing ease transport mount bellcrank Bill Boss gives us some answers months column Charles Bauers Norridge IL big Precision Scale prototype Douglas Skyraider won 89 Hats Its big enough removable wing Models electronic control system op erates flaps landing gear throttle Jim McCurrachs North Vancouver BC P 51 Mustang features Canadian markings nicely weathered finish Sport Scale entry 1989 Tn-Cities Nats Gerry Deneau Aurora C0 claims worked Sport Scale Curtiss P-6E tween 1957 198831 years placed Douglas DC-3 other name C-47 third 89 Hats Author Bill Boss has R4D Ken Burtons Roberts WA large based several CL Scale columns Marine R40 large enough candi- Gerrys ideas found club newalet date removable wing Good-flying ter Probable Cause photos Sport Scale entry seen 89 Hats month taken Mike Weishans Peifect Stability gyro output reverse switch neutral adjust trimmer precise rudder servo neutral adjustment Airtronics SC-i Precision Ball Bearing Gyroscope System compact helicopter single axis gyro corates advanced technological features out standing ffight performance andi maneuverability Designed easy instal lation setup adjustment SC-i provides superior stability control demand ing flying conditions economically-priced gyro features ball-bearing equipped gimbal regulated gyro motor voltage supply easy mounting connector system convenient gyro setup LLYr tio N N] SEN OR in-flihtonoff operation dual ~AIRTRONICS sensitivity precision SC-i gyro GYRO MIXER BAIT automatically senses movement directs proper command 96252 appropriate servo N mixer amplifier utilizes automatic power source selector Detection Method Hall Effect Sensor SG-1 G offers perfect blend stability per formance compatibility Airtronics RIC systems Standard RONICSIA 11 Autry Irvine CA 92718714 830-s information about Airtronics quality products please call write address above Bird Prey/Baxter Continued page 58 wings being neutrally stable will continue straight last heading established modification should used Control Line model think Symmetrical wing panels made flown cir cles no outside forces encountered extra tension afforded asymmetrical wing arrangement will hold model course Cutting streamer inboard panel however can cause plane swerve circle cut spar holes through engine mounts slightly oversized way spars can removed replaced fairly easily should wings need replaced Push spars through holes center rib slide wing panels guiding lead-out wires through holes Since wing will instantly fold spars should come loose make sure theyre securely glued cores Add strapping tape trailing edge fantail can now assembled elevator hinged using favorite hinging method Slide fantail over trailing edge wing glue securely stall control horn attach pushrod Adjust pushrod controls 300 total travel Cut leading edge away clear engine add ply firewall Add wing tips ribs braces lead-out guide tubes Running lead-outs through tips creates attractive appearance Resist temptation Instead simply glue lead-out tubes bottom tip have replace wing panel leadouts can easily removed wing tip facilitate sliding new panel over lead-out wires smooth airfoil fill dents de pressions spar/foam junction Magic Model Filler light spackling com pound Cover entire plane Fas-Cal favorite low-temperature covering Adjust center-of-gravity coincide center spar sliding en gine back forth necessary Install engineand again dont forget attach restraint cable Flying Bird Prey gives predictable reliable handling no quirks catch off-guard Properly balanced model both stable responsive Like well-designed flying wing itll stantly snap turn Because its larger size Bird probably wont fast previous modelsbut youll hard-pressed find ship gives tighter turns airplane overly touchy Does hunt yes know its tail-heavy Slug gish turns Its nose heavy Does slow down bounce turns has too much control travel Adjust trim ac cordingly adding nose tail weight ad justing control travel until feels right flying style Tail weight can re duced cutting four 1 /2-in lightening holes fantail Lets see cant spark flying wing re vival Build fly Bird Prey should contention some awesome purses becoming avail able Combat matches around coun try Combat fraternity will take note Good luck happy hunting CL Scale/Boss Continued page 60 sketches three-line belicrank system setup operation Therefore will covering technical aspects three-line system oper ation Referring Sketch wing top fuselage bellcrank should placed fuselage hecause vertical location center-of-gravity model will below wing bellcrank placed wing model would have tendency roll toward center circle during flight As Gerry puts no-no since drooping control lines tend make flier turn prema turely gray cause life expectancy model extremely short should also noted high-wing mod els special lead-out guides must located some near tip inboard wing Making Continued page 168 166 Model Aviation 962S2 SG-I Gyro Specifications Power Supply 4 Cell 48 Volt common power 5 Cell 6 Volt separate power Motor Running Current 130 MA DC Amplifier Current 30 MA DC Dimensions Gyroscopel69 x 48 x 169 Miner Amp244 x 136 x 075 Control Box095x l34x 075 Weight Gyroscope254 ot Miner Ampl09 oz Control Box006 oz wing removable type model does pose control rod disconnect problems unless wing has flaps operational flaps operated mechanically belleranks pushrods special arrangements made disconnecting control rods wing removal operated servo mounted wing disconnection wiring could simple pulling apart Deans-type connector Remember flaps must operate independently throttle control full points AMA Scale competition high-wing configuration poses few problems making wing removable mid- low-wing configurations can require fu selage modifications and/or special access panels disconnecting throttle elevator perhaps flap control rods Now take look Sketch B wing made removable midwing model have two choices mounting bellerank first mount bellerank fuselage above wing thus avoiding disconnect problems throttle elevator control rods wing flaps operational disconnecting flap operating rod could accomplished wing being re moved electrically operated wire disconnect may required second choice mounting bellerank wing creates control rod dis connect problem does permit lead-out wires enclosed wing thereby giving model realistic scale appearance upper lower portion fuse lage dotted lines can made removable facil itate control rod disconnect probably would best make lower portion fuselage wing removable unit Making lower por tion fuselage removable less conspicuous el Access disconnecting control rods de pends use upright inverted bellcrank mounting control rod disconnect can accomplished via cockpit operational canopy upright-mounted bellerank OK operational canopy adds realism mod el inverted bellerank mounting used ac cess control rods can via small remov able panel below bellerank Referring Sketch C shows low-wing configuration found WW II fight ers As midwing configuration bellcrank can installed upright inverted Again access control rod disconnect can via cockpit upright mount via small ac cess panel bottom wing just below bellerank Working flaps gear retraction systems gen erally would pose disconnect problems making wing removable low- midwing model Most mechanical electric-servo flap operating systems usually contained within structure wing high-wing configuration might re quire disconnecting would electrical connec tor have presented some basics making wing removable use upright- inverted-mount bellerank have pur posely omitted discussion installation support bellerank lead-outs information lead-outs must refer September 86 column covered subject great de tail happen new reader col umn will happy send copy either columns mentioned convenience following listing major items have appeared col umn during 1989 1989 Directory of CL Scale Items Model Aviation JanuaryDiscussion complexities Sport Scale event based comments Mike Keville Pro-Stunt Products Line reels other supplies Trophies Jennings 1988 Directory CL Scale Items Model Aviation FebruaryReview CL Scale rules change pro posal 1990-91 rule book Removing old silkspan Gerry Dc neau Return Sterling C-size Scale kits Contest reportGSCB annual Scale meet MarchReport College Aeronautics Flushing NY Open house static show Workshop hint Bob Furr Airfoiled bicycle spokes wing struts wires Visit USAF Museum Wright Patterson AFB Stan Alexander Documentation source Scale Plans Photo Service April Construction three- four168 Model Aviation #1 meter setting proper thiust wing stabillzer kicidence new n7odel detemilning present model doesnt fly staight PIVOTING V-BLOCKS piriper afipiut d Aq mien center lines fits q MAGNIFIED ANTI -PA RA LAX METER SCALE uinn pwnler efiows fine nudel inchbncu 0 gy BUBBLELEVELForqulckendeesy ael-i el meter end eircrelt 9 P0 Box 7247 310 N 5th St St Charles IL 60174 312 584-7616 preserves overall appearance mod- text Please send SASE address given top column bladed Scale propellers Match engine propeller George Lieb May Using 35mm camera reproducing insignias Bob Furr Pro-Stunt Products Engine offset pads Notes NASA June 1989 WRAM Show report Response readers Jan 89 column Scale events July Sport Scale scoresheets Jerry De neau Notes NASA Scale Data Source Committee Gilroy CA MAC Flying Show Michael Hawks August Three-line handle throttle adjuster Mike Welshans Documentation guide Michael Blaugher Metal Mend Tape simulating ac cess panels etc September Getting started Sport Scale select Scale kit build plans finding source data Jerry Deneau Notes NASA need NASA District reps Vend Mount System G&A Prod ucts October Getting started Sport Scale re view static flight judging Gerry Deneau November 1989 Nationals coverage December Discussion Scale rules change 1990-91 Black Decker tools work shops Carl Duggan Mighty Lite plywood new build ing product Please send ideas contest reports especially photos CL Scale address found very top column CL Aerobatics/Fancher Continued page 61 Also Stunt becoming refined Supe rior performances now result piloting skills also expertise allied areas such aircraft design flight trim engines young pilots exceptional reactions usu ally enough overcome advantages experienced fliers other areas early Seventies saw continued diminu tion participation younger fliers still respectable numbersaround eight 15 contestantsearly obvi ously decreasing Open other hand continuing premier CL event culminating 1976 Nats Dayton OH over 80 con testants Open event Still very best youngsters competitive adult fliers shown Walker Cup victory Denny Adamisin believe 1972 76 Dayton Nats seeds modern event sown large num bers contestants spending huge sums money attend Nats question arose whether BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ci receiver battery status press ci button 2Precise Rugged Small Light 1/2 OZ Made USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1608 Poughkeepsle NY 12601 NY Stats residents add sales tax existing format provided reasonable cost/value ratio format still consisted day qualifying vast majority contestants second day qual ifying finals 1976 second round qualifying es sentially blown away Mother Nature As re sult fliers spent big bucks tend Nats enjoyed just eight-minute offi cial flight expenditures thought reasonably sothat cost wasnt justified restricted format Thus born cur rent concept 1977 present have used contin ually refined version four-day format modern fliers familiar consists two full days qualifying day semifi nals top 20 qualifiers Walker Cup flyoff fourth day top five Open pilots winners Junior Sen ior events vie another determine overall National Champion format has proven generally very popular two days qualifying allow much greater level participation entries Open event Although seldom change stand ing between first second day overall benefit additional official flying has eagerly affirmed third fourth days allow very exacting method selecting champion still per mitting up-and-coming stars gratification incentive having qualified Nats downside existing format lengthy costly administer Overall ever format has proven successful popular effective Juniors Seniors unfortunately have taken something back seat adult fliers P06 16 Nun1boDItnSO SO SF350 318 401255 SF400 601255 SF500 260901570 RF600 290121675 RF7SO7W5/32 /S001 1670 RF600 3145 toAScais 170 Model Aviation Revised Lightweight Dual Spoiler ModuleAT 1048 dual spoilers made rigid PVC weigh 3 oz per set cloaed position total overall height 1 4 inches modiflible 1 inch unmodified blades fully extended total overall height le 2% inches modules accuate extremely smooth easily single module 5118 inches thick by6 inches long Modules can ganged end-to-end longer end increased surface area Only *1415 per set Ask local hobby shop today Dealers ask ACE RIC Inc details AL-TEC PRODUCTS INC 18800 St Rt 47E ey OH 45365 513 498-1721 itS 41 nov07 snap 01 owe 011001 600 $200 sitipping und h.ndiingplOSiled Fults Tooling PO Box 95 Champaign IL 61824
Edition: Model Aviation - 1990/01
Page Numbers: 60, 166, 168, 170
MAJOR TOPIC October December columns getting started Sport Scale covered basics selecting model find ing documentation Static flight judging also reviewed have written about bellcrank placement past month will explore subject little further based ideas taken Gerry Deneaus continuing series articles CL Sport Scale appearing clubs newsletter Probable Cause Emphasis month will converting RC kit CL use decid ing whether models wing will remov able permanently fixed model Trying determine type bellcrank its location generally first step taken conversion RC kit CL use Should bellcrank installed fuselage wing could dictated models wing configuration high-wing midwing low-wing Another very important consideration whether wing will made removable glued permanently place Because larger size models Scale modelers build ing days removable wing has some dis tinct advantages light ever-diminishing capacities forms transportation Also considered type bellcrank upright inverted mounting direction travel throttle control arm engine permanently fixed fuselage have decide what size style bellerank upright inverted would required pro vide proper direction travel engine throttle control However wing made removable must consider access control rod con nections throttle elevator perhaps flaps Before moving let note October 88 column has extensive information suppose could start assumption Scale models would equipped throttle control operated via three-line bellcrank system Throttle control neces sary obtaining maximum flying points com petition also adds greatly flying enjoy- ontinued page 166 ment model wing regardless model configuration high- mid- low-wing 60 Model Aviation Control Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 Want build Scale model can remove wing ease transport mount bellcrank Bill Boss gives us some answers months column Charles Bauers Norridge IL big Precision Scale prototype Douglas Skyraider won 89 Hats Its big enough removable wing Models electronic control system op erates flaps landing gear throttle Jim McCurrachs North Vancouver BC P 51 Mustang features Canadian markings nicely weathered finish Sport Scale entry 1989 Tn-Cities Nats Gerry Deneau Aurora C0 claims worked Sport Scale Curtiss P-6E tween 1957 198831 years placed Douglas DC-3 other name C-47 third 89 Hats Author Bill Boss has R4D Ken Burtons Roberts WA large based several CL Scale columns Marine R40 large enough candi- Gerrys ideas found club newalet date removable wing Good-flying ter Probable Cause photos Sport Scale entry seen 89 Hats month taken Mike Weishans Peifect Stability gyro output reverse switch neutral adjust trimmer precise rudder servo neutral adjustment Airtronics SC-i Precision Ball Bearing Gyroscope System compact helicopter single axis gyro corates advanced technological features out standing ffight performance andi maneuverability Designed easy instal lation setup adjustment SC-i provides superior stability control demand ing flying conditions economically-priced gyro features ball-bearing equipped gimbal regulated gyro motor voltage supply easy mounting connector system convenient gyro setup LLYr tio N N] SEN OR in-flihtonoff operation dual ~AIRTRONICS sensitivity precision SC-i gyro GYRO MIXER BAIT automatically senses movement directs proper command 96252 appropriate servo N mixer amplifier utilizes automatic power source selector Detection Method Hall Effect Sensor SG-1 G offers perfect blend stability per formance compatibility Airtronics RIC systems Standard RONICSIA 11 Autry Irvine CA 92718714 830-s information about Airtronics quality products please call write address above Bird Prey/Baxter Continued page 58 wings being neutrally stable will continue straight last heading established modification should used Control Line model think Symmetrical wing panels made flown cir cles no outside forces encountered extra tension afforded asymmetrical wing arrangement will hold model course Cutting streamer inboard panel however can cause plane swerve circle cut spar holes through engine mounts slightly oversized way spars can removed replaced fairly easily should wings need replaced Push spars through holes center rib slide wing panels guiding lead-out wires through holes Since wing will instantly fold spars should come loose make sure theyre securely glued cores Add strapping tape trailing edge fantail can now assembled elevator hinged using favorite hinging method Slide fantail over trailing edge wing glue securely stall control horn attach pushrod Adjust pushrod controls 300 total travel Cut leading edge away clear engine add ply firewall Add wing tips ribs braces lead-out guide tubes Running lead-outs through tips creates attractive appearance Resist temptation Instead simply glue lead-out tubes bottom tip have replace wing panel leadouts can easily removed wing tip facilitate sliding new panel over lead-out wires smooth airfoil fill dents de pressions spar/foam junction Magic Model Filler light spackling com pound Cover entire plane Fas-Cal favorite low-temperature covering Adjust center-of-gravity coincide center spar sliding en gine back forth necessary Install engineand again dont forget attach restraint cable Flying Bird Prey gives predictable reliable handling no quirks catch off-guard Properly balanced model both stable responsive Like well-designed flying wing itll stantly snap turn Because its larger size Bird probably wont fast previous modelsbut youll hard-pressed find ship gives tighter turns airplane overly touchy Does hunt yes know its tail-heavy Slug gish turns Its nose heavy Does slow down bounce turns has too much control travel Adjust trim ac cordingly adding nose tail weight ad justing control travel until feels right flying style Tail weight can re duced cutting four 1 /2-in lightening holes fantail Lets see cant spark flying wing re vival Build fly Bird Prey should contention some awesome purses becoming avail able Combat matches around coun try Combat fraternity will take note Good luck happy hunting CL Scale/Boss Continued page 60 sketches three-line belicrank system setup operation Therefore will covering technical aspects three-line system oper ation Referring Sketch wing top fuselage bellcrank should placed fuselage hecause vertical location center-of-gravity model will below wing bellcrank placed wing model would have tendency roll toward center circle during flight As Gerry puts no-no since drooping control lines tend make flier turn prema turely gray cause life expectancy model extremely short should also noted high-wing mod els special lead-out guides must located some near tip inboard wing Making Continued page 168 166 Model Aviation 962S2 SG-I Gyro Specifications Power Supply 4 Cell 48 Volt common power 5 Cell 6 Volt separate power Motor Running Current 130 MA DC Amplifier Current 30 MA DC Dimensions Gyroscopel69 x 48 x 169 Miner Amp244 x 136 x 075 Control Box095x l34x 075 Weight Gyroscope254 ot Miner Ampl09 oz Control Box006 oz wing removable type model does pose control rod disconnect problems unless wing has flaps operational flaps operated mechanically belleranks pushrods special arrangements made disconnecting control rods wing removal operated servo mounted wing disconnection wiring could simple pulling apart Deans-type connector Remember flaps must operate independently throttle control full points AMA Scale competition high-wing configuration poses few problems making wing removable mid- low-wing configurations can require fu selage modifications and/or special access panels disconnecting throttle elevator perhaps flap control rods Now take look Sketch B wing made removable midwing model have two choices mounting bellerank first mount bellerank fuselage above wing thus avoiding disconnect problems throttle elevator control rods wing flaps operational disconnecting flap operating rod could accomplished wing being re moved electrically operated wire disconnect may required second choice mounting bellerank wing creates control rod dis connect problem does permit lead-out wires enclosed wing thereby giving model realistic scale appearance upper lower portion fuse lage dotted lines can made removable facil itate control rod disconnect probably would best make lower portion fuselage wing removable unit Making lower por tion fuselage removable less conspicuous el Access disconnecting control rods de pends use upright inverted bellcrank mounting control rod disconnect can accomplished via cockpit operational canopy upright-mounted bellerank OK operational canopy adds realism mod el inverted bellerank mounting used ac cess control rods can via small remov able panel below bellerank Referring Sketch C shows low-wing configuration found WW II fight ers As midwing configuration bellcrank can installed upright inverted Again access control rod disconnect can via cockpit upright mount via small ac cess panel bottom wing just below bellerank Working flaps gear retraction systems gen erally would pose disconnect problems making wing removable low- midwing model Most mechanical electric-servo flap operating systems usually contained within structure wing high-wing configuration might re quire disconnecting would electrical connec tor have presented some basics making wing removable use upright- inverted-mount bellerank have pur posely omitted discussion installation support bellerank lead-outs information lead-outs must refer September 86 column covered subject great de tail happen new reader col umn will happy send copy either columns mentioned convenience following listing major items have appeared col umn during 1989 1989 Directory of CL Scale Items Model Aviation JanuaryDiscussion complexities Sport Scale event based comments Mike Keville Pro-Stunt Products Line reels other supplies Trophies Jennings 1988 Directory CL Scale Items Model Aviation FebruaryReview CL Scale rules change pro posal 1990-91 rule book Removing old silkspan Gerry Dc neau Return Sterling C-size Scale kits Contest reportGSCB annual Scale meet MarchReport College Aeronautics Flushing NY Open house static show Workshop hint Bob Furr Airfoiled bicycle spokes wing struts wires Visit USAF Museum Wright Patterson AFB Stan Alexander Documentation source Scale Plans Photo Service April Construction three- four168 Model Aviation #1 meter setting proper thiust wing stabillzer kicidence new n7odel detemilning present model doesnt fly staight PIVOTING V-BLOCKS piriper afipiut d Aq mien center lines fits q MAGNIFIED ANTI -PA RA LAX METER SCALE uinn pwnler efiows fine nudel inchbncu 0 gy BUBBLELEVELForqulckendeesy ael-i el meter end eircrelt 9 P0 Box 7247 310 N 5th St St Charles IL 60174 312 584-7616 preserves overall appearance mod- text Please send SASE address given top column bladed Scale propellers Match engine propeller George Lieb May Using 35mm camera reproducing insignias Bob Furr Pro-Stunt Products Engine offset pads Notes NASA June 1989 WRAM Show report Response readers Jan 89 column Scale events July Sport Scale scoresheets Jerry De neau Notes NASA Scale Data Source Committee Gilroy CA MAC Flying Show Michael Hawks August Three-line handle throttle adjuster Mike Welshans Documentation guide Michael Blaugher Metal Mend Tape simulating ac cess panels etc September Getting started Sport Scale select Scale kit build plans finding source data Jerry Deneau Notes NASA need NASA District reps Vend Mount System G&A Prod ucts October Getting started Sport Scale re view static flight judging Gerry Deneau November 1989 Nationals coverage December Discussion Scale rules change 1990-91 Black Decker tools work shops Carl Duggan Mighty Lite plywood new build ing product Please send ideas contest reports especially photos CL Scale address found very top column CL Aerobatics/Fancher Continued page 61 Also Stunt becoming refined Supe rior performances now result piloting skills also expertise allied areas such aircraft design flight trim engines young pilots exceptional reactions usu ally enough overcome advantages experienced fliers other areas early Seventies saw continued diminu tion participation younger fliers still respectable numbersaround eight 15 contestantsearly obvi ously decreasing Open other hand continuing premier CL event culminating 1976 Nats Dayton OH over 80 con testants Open event Still very best youngsters competitive adult fliers shown Walker Cup victory Denny Adamisin believe 1972 76 Dayton Nats seeds modern event sown large num bers contestants spending huge sums money attend Nats question arose whether BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ci receiver battery status press ci button 2Precise Rugged Small Light 1/2 OZ Made USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1608 Poughkeepsle NY 12601 NY Stats residents add sales tax existing format provided reasonable cost/value ratio format still consisted day qualifying vast majority contestants second day qual ifying finals 1976 second round qualifying es sentially blown away Mother Nature As re sult fliers spent big bucks tend Nats enjoyed just eight-minute offi cial flight expenditures thought reasonably sothat cost wasnt justified restricted format Thus born cur rent concept 1977 present have used contin ually refined version four-day format modern fliers familiar consists two full days qualifying day semifi nals top 20 qualifiers Walker Cup flyoff fourth day top five Open pilots winners Junior Sen ior events vie another determine overall National Champion format has proven generally very popular two days qualifying allow much greater level participation entries Open event Although seldom change stand ing between first second day overall benefit additional official flying has eagerly affirmed third fourth days allow very exacting method selecting champion still per mitting up-and-coming stars gratification incentive having qualified Nats downside existing format lengthy costly administer Overall ever format has proven successful popular effective Juniors Seniors unfortunately have taken something back seat adult fliers P06 16 Nun1boDItnSO SO SF350 318 401255 SF400 601255 SF500 260901570 RF600 290121675 RF7SO7W5/32 /S001 1670 RF600 3145 toAScais 170 Model Aviation Revised Lightweight Dual Spoiler ModuleAT 1048 dual spoilers made rigid PVC weigh 3 oz per set cloaed position total overall height 1 4 inches modiflible 1 inch unmodified blades fully extended total overall height le 2% inches modules accuate extremely smooth easily single module 5118 inches thick by6 inches long Modules can ganged end-to-end longer end increased surface area Only *1415 per set Ask local hobby shop today Dealers ask ACE RIC Inc details AL-TEC PRODUCTS INC 18800 St Rt 47E ey OH 45365 513 498-1721 itS 41 nov07 snap 01 owe 011001 600 $200 sitipping und h.ndiingplOSiled Fults Tooling PO Box 95 Champaign IL 61824
Edition: Model Aviation - 1990/01
Page Numbers: 60, 166, 168, 170
MAJOR TOPIC October December columns getting started Sport Scale covered basics selecting model find ing documentation Static flight judging also reviewed have written about bellcrank placement past month will explore subject little further based ideas taken Gerry Deneaus continuing series articles CL Sport Scale appearing clubs newsletter Probable Cause Emphasis month will converting RC kit CL use decid ing whether models wing will remov able permanently fixed model Trying determine type bellcrank its location generally first step taken conversion RC kit CL use Should bellcrank installed fuselage wing could dictated models wing configuration high-wing midwing low-wing Another very important consideration whether wing will made removable glued permanently place Because larger size models Scale modelers build ing days removable wing has some dis tinct advantages light ever-diminishing capacities forms transportation Also considered type bellcrank upright inverted mounting direction travel throttle control arm engine permanently fixed fuselage have decide what size style bellerank upright inverted would required pro vide proper direction travel engine throttle control However wing made removable must consider access control rod con nections throttle elevator perhaps flaps Before moving let note October 88 column has extensive information suppose could start assumption Scale models would equipped throttle control operated via three-line bellcrank system Throttle control neces sary obtaining maximum flying points com petition also adds greatly flying enjoy- ontinued page 166 ment model wing regardless model configuration high- mid- low-wing 60 Model Aviation Control Line Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 Want build Scale model can remove wing ease transport mount bellcrank Bill Boss gives us some answers months column Charles Bauers Norridge IL big Precision Scale prototype Douglas Skyraider won 89 Hats Its big enough removable wing Models electronic control system op erates flaps landing gear throttle Jim McCurrachs North Vancouver BC P 51 Mustang features Canadian markings nicely weathered finish Sport Scale entry 1989 Tn-Cities Nats Gerry Deneau Aurora C0 claims worked Sport Scale Curtiss P-6E tween 1957 198831 years placed Douglas DC-3 other name C-47 third 89 Hats Author Bill Boss has R4D Ken Burtons Roberts WA large based several CL Scale columns Marine R40 large enough candi- Gerrys ideas found club newalet date removable wing Good-flying ter Probable Cause photos Sport Scale entry seen 89 Hats month taken Mike Weishans Peifect Stability gyro output reverse switch neutral adjust trimmer precise rudder servo neutral adjustment Airtronics SC-i Precision Ball Bearing Gyroscope System compact helicopter single axis gyro corates advanced technological features out standing ffight performance andi maneuverability Designed easy instal lation setup adjustment SC-i provides superior stability control demand ing flying conditions economically-priced gyro features ball-bearing equipped gimbal regulated gyro motor voltage supply easy mounting connector system convenient gyro setup LLYr tio N N] SEN OR in-flihtonoff operation dual ~AIRTRONICS sensitivity precision SC-i gyro GYRO MIXER BAIT automatically senses movement directs proper command 96252 appropriate servo N mixer amplifier utilizes automatic power source selector Detection Method Hall Effect Sensor SG-1 G offers perfect blend stability per formance compatibility Airtronics RIC systems Standard RONICSIA 11 Autry Irvine CA 92718714 830-s information about Airtronics quality products please call write address above Bird Prey/Baxter Continued page 58 wings being neutrally stable will continue straight last heading established modification should used Control Line model think Symmetrical wing panels made flown cir cles no outside forces encountered extra tension afforded asymmetrical wing arrangement will hold model course Cutting streamer inboard panel however can cause plane swerve circle cut spar holes through engine mounts slightly oversized way spars can removed replaced fairly easily should wings need replaced Push spars through holes center rib slide wing panels guiding lead-out wires through holes Since wing will instantly fold spars should come loose make sure theyre securely glued cores Add strapping tape trailing edge fantail can now assembled elevator hinged using favorite hinging method Slide fantail over trailing edge wing glue securely stall control horn attach pushrod Adjust pushrod controls 300 total travel Cut leading edge away clear engine add ply firewall Add wing tips ribs braces lead-out guide tubes Running lead-outs through tips creates attractive appearance Resist temptation Instead simply glue lead-out tubes bottom tip have replace wing panel leadouts can easily removed wing tip facilitate sliding new panel over lead-out wires smooth airfoil fill dents de pressions spar/foam junction Magic Model Filler light spackling com pound Cover entire plane Fas-Cal favorite low-temperature covering Adjust center-of-gravity coincide center spar sliding en gine back forth necessary Install engineand again dont forget attach restraint cable Flying Bird Prey gives predictable reliable handling no quirks catch off-guard Properly balanced model both stable responsive Like well-designed flying wing itll stantly snap turn Because its larger size Bird probably wont fast previous modelsbut youll hard-pressed find ship gives tighter turns airplane overly touchy Does hunt yes know its tail-heavy Slug gish turns Its nose heavy Does slow down bounce turns has too much control travel Adjust trim ac cordingly adding nose tail weight ad justing control travel until feels right flying style Tail weight can re duced cutting four 1 /2-in lightening holes fantail Lets see cant spark flying wing re vival Build fly Bird Prey should contention some awesome purses becoming avail able Combat matches around coun try Combat fraternity will take note Good luck happy hunting CL Scale/Boss Continued page 60 sketches three-line belicrank system setup operation Therefore will covering technical aspects three-line system oper ation Referring Sketch wing top fuselage bellcrank should placed fuselage hecause vertical location center-of-gravity model will below wing bellcrank placed wing model would have tendency roll toward center circle during flight As Gerry puts no-no since drooping control lines tend make flier turn prema turely gray cause life expectancy model extremely short should also noted high-wing mod els special lead-out guides must located some near tip inboard wing Making Continued page 168 166 Model Aviation 962S2 SG-I Gyro Specifications Power Supply 4 Cell 48 Volt common power 5 Cell 6 Volt separate power Motor Running Current 130 MA DC Amplifier Current 30 MA DC Dimensions Gyroscopel69 x 48 x 169 Miner Amp244 x 136 x 075 Control Box095x l34x 075 Weight Gyroscope254 ot Miner Ampl09 oz Control Box006 oz wing removable type model does pose control rod disconnect problems unless wing has flaps operational flaps operated mechanically belleranks pushrods special arrangements made disconnecting control rods wing removal operated servo mounted wing disconnection wiring could simple pulling apart Deans-type connector Remember flaps must operate independently throttle control full points AMA Scale competition high-wing configuration poses few problems making wing removable mid- low-wing configurations can require fu selage modifications and/or special access panels disconnecting throttle elevator perhaps flap control rods Now take look Sketch B wing made removable midwing model have two choices mounting bellerank first mount bellerank fuselage above wing thus avoiding disconnect problems throttle elevator control rods wing flaps operational disconnecting flap operating rod could accomplished wing being re moved electrically operated wire disconnect may required second choice mounting bellerank wing creates control rod dis connect problem does permit lead-out wires enclosed wing thereby giving model realistic scale appearance upper lower portion fuse lage dotted lines can made removable facil itate control rod disconnect probably would best make lower portion fuselage wing removable unit Making lower por tion fuselage removable less conspicuous el Access disconnecting control rods de pends use upright inverted bellcrank mounting control rod disconnect can accomplished via cockpit operational canopy upright-mounted bellerank OK operational canopy adds realism mod el inverted bellerank mounting used ac cess control rods can via small remov able panel below bellerank Referring Sketch C shows low-wing configuration found WW II fight ers As midwing configuration bellcrank can installed upright inverted Again access control rod disconnect can via cockpit upright mount via small ac cess panel bottom wing just below bellerank Working flaps gear retraction systems gen erally would pose disconnect problems making wing removable low- midwing model Most mechanical electric-servo flap operating systems usually contained within structure wing high-wing configuration might re quire disconnecting would electrical connec tor have presented some basics making wing removable use upright- inverted-mount bellerank have pur posely omitted discussion installation support bellerank lead-outs information lead-outs must refer September 86 column covered subject great de tail happen new reader col umn will happy send copy either columns mentioned convenience following listing major items have appeared col umn during 1989 1989 Directory of CL Scale Items Model Aviation JanuaryDiscussion complexities Sport Scale event based comments Mike Keville Pro-Stunt Products Line reels other supplies Trophies Jennings 1988 Directory CL Scale Items Model Aviation FebruaryReview CL Scale rules change pro posal 1990-91 rule book Removing old silkspan Gerry Dc neau Return Sterling C-size Scale kits Contest reportGSCB annual Scale meet MarchReport College Aeronautics Flushing NY Open house static show Workshop hint Bob Furr Airfoiled bicycle spokes wing struts wires Visit USAF Museum Wright Patterson AFB Stan Alexander Documentation source Scale Plans Photo Service April Construction three- four168 Model Aviation #1 meter setting proper thiust wing stabillzer kicidence new n7odel detemilning present model doesnt fly staight PIVOTING V-BLOCKS piriper afipiut d Aq mien center lines fits q MAGNIFIED ANTI -PA RA LAX METER SCALE uinn pwnler efiows fine nudel inchbncu 0 gy BUBBLELEVELForqulckendeesy ael-i el meter end eircrelt 9 P0 Box 7247 310 N 5th St St Charles IL 60174 312 584-7616 preserves overall appearance mod- text Please send SASE address given top column bladed Scale propellers Match engine propeller George Lieb May Using 35mm camera reproducing insignias Bob Furr Pro-Stunt Products Engine offset pads Notes NASA June 1989 WRAM Show report Response readers Jan 89 column Scale events July Sport Scale scoresheets Jerry De neau Notes NASA Scale Data Source Committee Gilroy CA MAC Flying Show Michael Hawks August Three-line handle throttle adjuster Mike Welshans Documentation guide Michael Blaugher Metal Mend Tape simulating ac cess panels etc September Getting started Sport Scale select Scale kit build plans finding source data Jerry Deneau Notes NASA need NASA District reps Vend Mount System G&A Prod ucts October Getting started Sport Scale re view static flight judging Gerry Deneau November 1989 Nationals coverage December Discussion Scale rules change 1990-91 Black Decker tools work shops Carl Duggan Mighty Lite plywood new build ing product Please send ideas contest reports especially photos CL Scale address found very top column CL Aerobatics/Fancher Continued page 61 Also Stunt becoming refined Supe rior performances now result piloting skills also expertise allied areas such aircraft design flight trim engines young pilots exceptional reactions usu ally enough overcome advantages experienced fliers other areas early Seventies saw continued diminu tion participation younger fliers still respectable numbersaround eight 15 contestantsearly obvi ously decreasing Open other hand continuing premier CL event culminating 1976 Nats Dayton OH over 80 con testants Open event Still very best youngsters competitive adult fliers shown Walker Cup victory Denny Adamisin believe 1972 76 Dayton Nats seeds modern event sown large num bers contestants spending huge sums money attend Nats question arose whether BATT- CHEKBX Saves Time . Saves Models Install RC Models 3-Level indication ci receiver battery status press ci button 2Precise Rugged Small Light 1/2 OZ Made USA Also custom units other applications Order Today $1495 dealer send check money order topostpaid Protune Corp 914 462-6452 PO Box 1608 Poughkeepsle NY 12601 NY Stats residents add sales tax existing format provided reasonable cost/value ratio format still consisted day qualifying vast majority contestants second day qual ifying finals 1976 second round qualifying es sentially blown away Mother Nature As re sult fliers spent big bucks tend Nats enjoyed just eight-minute offi cial flight expenditures thought reasonably sothat cost wasnt justified restricted format Thus born cur rent concept 1977 present have used contin ually refined version four-day format modern fliers familiar consists two full days qualifying day semifi nals top 20 qualifiers Walker Cup flyoff fourth day top five Open pilots winners Junior Sen ior events vie another determine overall National Champion format has proven generally very popular two days qualifying allow much greater level participation entries Open event Although seldom change stand ing between first second day overall benefit additional official flying has eagerly affirmed third fourth days allow very exacting method selecting champion still per mitting up-and-coming stars gratification incentive having qualified Nats downside existing format lengthy costly administer Overall ever format has proven successful popular effective Juniors Seniors unfortunately have taken something back seat adult fliers P06 16 Nun1boDItnSO SO SF350 318 401255 SF400 601255 SF500 260901570 RF600 290121675 RF7SO7W5/32 /S001 1670 RF600 3145 toAScais 170 Model Aviation Revised Lightweight Dual Spoiler ModuleAT 1048 dual spoilers made rigid PVC weigh 3 oz per set cloaed position total overall height 1 4 inches modiflible 1 inch unmodified blades fully extended total overall height le 2% inches modules accuate extremely smooth easily single module 5118 inches thick by6 inches long Modules can ganged end-to-end longer end increased surface area Only *1415 per set Ask local hobby shop today Dealers ask ACE RIC Inc details AL-TEC PRODUCTS INC 18800 St Rt 47E ey OH 45365 513 498-1721 itS 41 nov07 snap 01 owe 011001 600 $200 sitipping und h.ndiingplOSiled Fults Tooling PO Box 95 Champaign IL 61824