B SCALE Mike Gretz Last months column showed method operating pneumatic retractable landing gears off standard 3-line throttle system forgot mention greatest benefit actuating retract cycle other extra option off throttle mechanism eliminating need extra flying lines addition normal three some complex CL Scale subjects have several mechanical scale options like bombers fighters its uncommon see two three extra flying lines being used Its quite obvious additional weight drag extra lines will put greater burden model flight increased drag will especially noticeable windy day Bear mind talking about models 40 60 engine size range Its true power can minimize effects extra drag wouldnt ounce prevention worth pound cure Whether youre considering model just extra scale operation five would strongly recommend always aim keep number flying lines used absolute minimum retract system shown last month achieves aim Flaps Throttle Actuating flaps off throttle control system can just easy easier some cases retract system simplest installation have onepiece airplane wing permanently built fuselage cases flaps can moved up down simply running another HIGH THROTTLE pushrod off bellcranks throttle arm off throttle pushrod itself back flaps throttle full high position flaps will completely up throttle full low flaps will completely down drawback simple form flap/throttle operation can have completely up down flaps extreme ends throttle movement other words wanted cruise after takeoff level flight reduced power would also have live some degree down flap competition flying judges would downgrade score slightly under Realism Flight noticed unscale characteristic Better suited purposes system will allow flaps have complete up-down cycle own merely triggered throttle pushrod what last month retract system recall retracts up down cycle triggered moving throttle prescribed position momentarily after triggering posi tion independent minor changes throttle setting After raising gear going Continued page 109 TO ENGINE TO flLLLCRANK THROTTLE PUSHROD WIRE OR WOOD BUMP ON PUSHROD isonewayto add flap actuation 3-linethrottle System throttle pushrod position depicted flaps will up Theywill stay up until throttle brought back about 1/ speed time pushrod bump will activate down micro-switch May 1980 41 Onlythe sizeof tarstrips intheconcreteandthetwO-bladed props alerts ustotneractinaisnis a model Jeff Perezs Flying Fortress finished replica Knockout Dropper first 8-17 complete 50 missionsto Germany WW2 Four OS 25s powerthis 78 span craft Scale t Plane scratch-built kit L Kruse plc -- ~RETRACT SWITCH COULD ALSO BE ACTIVATED tzC SERVO N CONNECTOR FLAP HORNS UP FLAPDOWN FLAP MICRO-SWITCHMICRO- SWITCH changed appearance points range 21 77 reverse wingover maneuver added addition wingover Inside loops cut three inverted flight repositioned just after inside loops know procedure today Outside round loops started inverted flight three done square loop maneuver moved follow outside round loops followed horizontal eights vertical eights overhead eights new maneuver destined nemesis square eight rules cycle kept pattern same 1954 rules cycle 1955-56 according copy rule book sent Bill Netzeband changed appearance points range 3 24 triangle figure added time spring 1957 George Aldrich asked Carl Wheeley AMA work over stunt rules According recent conversa tion George remember memories 23 years ago made scores range 0 40 however through printing editing error scores came out rule book 10-40 maneuvers except landing George said tried couple years get 10-40 changed back original 0-40 couldnt get rules altered also know 57 pattern added hourglass figure four leaf clover George said got idea four leaf clover pattern used old New York Mirror Meet hourglass Georges idea tri angular vertical eight doesnt remember named figure hourglass does remember Bill Netzeband wrote him showing maneuver couldnt done written described rule book Someone Europe finally wrote description hourglass could actually performed George also changed appearance points maximum 40 Aldrich pattern stayed effect until appearance points changed 74-75 rules cycle Also 76-77 rules cycle allowed contestants use backup model case crash equipment failure Because space etc have left Out some sublime points such pull testing descrip tion maneuvers 45 60 degrees instance some other information idea present development pattern first Nationals information stunt PAMPA contact Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Scale/Gretz continued page 41 absolute full high throttle gear would stay up until throttle moved back down about * SERVO REvERSAL sWITCHES-With just flip asruitch serco ttavel direction four primary channels can reversed * INDEPENDENT THROW ADJU5T-Ou chotroels thr amount servo travel coo con rrolled udependently * FIFTH CHANNEL ADJUSTServo pouttion etracr switch either rhe Up Down poritioo independently adjustable * TRIM LOCATION VARIABLESTIre locuriun trims us builders discretion yoo cue have standard trim otossed trim oe comhinasiou two * TRIM AUTHORITY PROGRAMMABILITY-By nhaugtng plug-in fined resistors amount servo incursion olsen trims meved progeammable * DUAL RATE--Switches adjustment puss see fuotished peovide DUAL RATE up three channels nAs EXPONENTIAL RATE OPTIONThis plug-in option pronides non-litteot servo ttuoel te latiun stich movement up Ibme channels St 795 ELECTRONIC MIXER OPTIONWith plug-in module nny two functions can c tether nishee uni-dinectiunully ur bi-directinnally St 195 PROGRAMMABLE PUSH BUTTON OPTION-In-fliglrt adjustable 4pee-pengeammed onetrol nurface munemert may obtained push ing button Sf95 THE SILVER SEVEN $281195 Full ni Cd system kit receiver four servos cleeh mish puce Ace dealee meite cull foe complete details crws Complete Ceealogr $100 ladd S 550 foe 1st CIa Mail retinusol Box 511 E 119W 19th Higginsville Mo 64037 816 584-7121 1/3 speed Any degree power between full high down regardless whether engine 1/3 could used cruising flight running anywhere full idle just short bringing gear down other hand once absolute high Only throttle held gear brought down would stay firmly absolute full high throttle would gear May 1980 109 Inexpensive key word ACES new line R/C kits called Silver Series line offers unique combination value soda wide range versatility found todays RIC market until now cutting out biggest cotts Labor furnith kit furnish labor allows us give Eopquality product inexpensive price comparable $800 radios some ita features Ed Robinson tookan Enya 60 Dave PlattT-25 kitand producedtnls beautiful machine Ed Yonkers NY flies CL Sport Scale wing flaps operate Aero Gloss paints used finish model Bill Boss photo Fairey Firefly model creation o tynolds Albuquerque NM real ones used Royal Navy WW2 fighter reconnaissance aircraft Model has 40 power Bill Pepin photo fiWfldO PROPELLERS Made polyester boil color Go GRISH No 1 propeller True helical pitch airfoil win-power 2 Blade Tractor 53each 5-45 3s 4uSizes pitches 6364No 747678styles 848688 949697 98104106needs 114116118 St 1241251261U 2 Blade PusherAT YOuR DEALER 5 3 54 6-36-4Na 8-6lIe 9610651 3 BladeTractor 55 cs64eGo Pusher SOc Metaiiic iumnuru color Tractor h76 *1 8688sta 96 0610451 Puther1061N triggered cycle up same benefits independent-cycle throttle-triggering can achieved flaps using system shown months drawing arrangement what have sport scale PT-19 know several other noted competition fliers have done basically same way flaps actually being moved RC type electric servo gets its power onboard battery pack servo triggered move first completely direction completely other two small microswitches located next throttle pushrod hump securely built onto pushrod move either direction far enough hump will depress appropriate switch actuate servo Micro-switches available Radio Shack similar store used Archer Subminiature Roller Lever Switches 5 amp $119 PT-19 exact location two switches should variable allow fine adjustment timing flap movements within motor range Ive got set up about like recommended last month retractsthe full high throttle position brings up er position brings down However setting up timing down flap model during test flights aware tendency model balloon bump flight flaps brought down plane still traveling high rate speed Make sure flaps dont start down until model has slowed enough make transition smoothly PT- 19 has removable wing 3-line bellcrank mounted fuselage elevator throttle pushrods could permanently hooked up Between microswitches mounted along throttle pushrod flap servo battery pack mounted wing have two connector plugs wiring Thus want take off wing transport part control system will affected two simple electrical connectors Theres no need undo pushrods mechanical link ages size battery pack youll need carry depends upon what kind servo get use Ive got old Bonner Duramite servo GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 57 6s&oPITcH 20 8 22 10 24 13 NEWSIZE IN 8& 1OPITcI-I 26 $16 RIGHT HAND TRACTOR inUJ BROS GEdEWEU ST JOHN INDIANA 46373 found dark corners Sigs workshop dates back about 20 years requires four AA pencell batteries Actually can lot better heavy old servo equip ment market today Id recommend get Carl Goldbergs Retract Power Systems cat no RPS-1 Although intended operating Goldbergs mechanical retract units off throttle trim RC sport pattern models power package ideally suited control line scale projects Most RC servos market today would cost between 40 80 dollars servo alone Goldberg system sells $3495 gives servo two AA cell battery box micro-switches connector plugs youll need completely assembled ready install Id consider overlooked bargains RC market today serious CL Scale enthusiast way case havent thought yet particular scale subject calls both retracts flaps would quite simple once have flap servo installed also actuate pneumatic retract valve shown last month off other side servo arm would working two additional scale operations very effectively off standard throttle system needing extra flying lines Mike Gretz Box 162 Montezuma IA 501 71 CL Racing/Lee continued page 42 arm came up short go carry model last Needless say very spectacular time As turned Out engine eaten rear hearing retainer enough metal going through engine com pletely strip plug element out engine causing quit abruptly two laps end race Oh well share bad racing luck Ballard up final heat ably pitted pick-uppitcrewfrom Texas Hedidgoodenough get win something like 605 time Last off day Slow Rat Again up first heat contest officials gave us sufficient time between events little testing setting needles etc Slow Rat running 143 during needle flight ready should have gone back van watch some paint dry Got 15 laps race motor went sour slowing down like too lean Ballard shut off bring Opened up needle -turn fired off Went less dozen laps crankshaft did its thing kind silence deafening Vic Garner up same heat running real well using TWA second pit stop became very hard start After changing plug getting restarted Vic shut off telling pit crew engine bad Sure enough looked like bushing bottom rod gone up through engine very small pieces Larry Miller Texas up next heat low aspect ratio Slow Rat K&B power Larry turning very low iSs ran beautiful race record 546 win sure didnt have flip prop times once start once first stop twice two others Ballard flying getting shut-downs just right Second place Slow Rat went Mike Gale Denver Mike AMA Slow Rat OS Tune power wrecked practice flight used Big Goodyear Ringmaster another OS Tune Because noshutoff rule Big Goodyear Mike fill thing syringe put enough fuel get required three pit stops plane will go over 70 laps 2 ounces Sunday non-AMA racing events Arizona Control Line Association Slow Rat South west Control Line Association Big Goodyear As have pointed out column past both events limited fuel capacity events no required pit stops ACLA Slow Rat flown rules quite similar AMA Slow Rat allow 40s run 015 stranded lines maximum fuel capacity ounce play game mileage versus speed competitors trying mileage Larry Miller tried event last year Buckeye very successful learned lot least enough year won event old AMA Slow Rat garage stuffed K&B 65 front put one-ounce tank went out fly thing hard believe running 162 traffic sport fuel using Stanfield Super Sport fuel brewed Lubbock Texas course has 3% nitro 65 really singing getting about 3 1 laps per tank enough three-stop race air speed made up difference Turned nice 646 win Second place went Charlie Johnson 655 SWCLA Big Goodyear still event Southwest year entries down last year 14 versus 27 times better competition strong Mike Gale current record-holder Big GY 602 first time around 615 Joe Klause last years winner second some thing like 655 Charlie Johnson third around 700 minutes interesting note three running OS Tune engines Ringmasters obvious superiority Schnuerle-ported motor showing up Its also interesting 4th 5th places went couple Texans using K&B 58s Ringmasters first attempts compete Big GY Some comments order 110 Model Aviation 3 3lade
Edition: Model Aviation - 1980/05
Page Numbers: 41, 109, 110
B SCALE Mike Gretz Last months column showed method operating pneumatic retractable landing gears off standard 3-line throttle system forgot mention greatest benefit actuating retract cycle other extra option off throttle mechanism eliminating need extra flying lines addition normal three some complex CL Scale subjects have several mechanical scale options like bombers fighters its uncommon see two three extra flying lines being used Its quite obvious additional weight drag extra lines will put greater burden model flight increased drag will especially noticeable windy day Bear mind talking about models 40 60 engine size range Its true power can minimize effects extra drag wouldnt ounce prevention worth pound cure Whether youre considering model just extra scale operation five would strongly recommend always aim keep number flying lines used absolute minimum retract system shown last month achieves aim Flaps Throttle Actuating flaps off throttle control system can just easy easier some cases retract system simplest installation have onepiece airplane wing permanently built fuselage cases flaps can moved up down simply running another HIGH THROTTLE pushrod off bellcranks throttle arm off throttle pushrod itself back flaps throttle full high position flaps will completely up throttle full low flaps will completely down drawback simple form flap/throttle operation can have completely up down flaps extreme ends throttle movement other words wanted cruise after takeoff level flight reduced power would also have live some degree down flap competition flying judges would downgrade score slightly under Realism Flight noticed unscale characteristic Better suited purposes system will allow flaps have complete up-down cycle own merely triggered throttle pushrod what last month retract system recall retracts up down cycle triggered moving throttle prescribed position momentarily after triggering posi tion independent minor changes throttle setting After raising gear going Continued page 109 TO ENGINE TO flLLLCRANK THROTTLE PUSHROD WIRE OR WOOD BUMP ON PUSHROD isonewayto add flap actuation 3-linethrottle System throttle pushrod position depicted flaps will up Theywill stay up until throttle brought back about 1/ speed time pushrod bump will activate down micro-switch May 1980 41 Onlythe sizeof tarstrips intheconcreteandthetwO-bladed props alerts ustotneractinaisnis a model Jeff Perezs Flying Fortress finished replica Knockout Dropper first 8-17 complete 50 missionsto Germany WW2 Four OS 25s powerthis 78 span craft Scale t Plane scratch-built kit L Kruse plc -- ~RETRACT SWITCH COULD ALSO BE ACTIVATED tzC SERVO N CONNECTOR FLAP HORNS UP FLAPDOWN FLAP MICRO-SWITCHMICRO- SWITCH changed appearance points range 21 77 reverse wingover maneuver added addition wingover Inside loops cut three inverted flight repositioned just after inside loops know procedure today Outside round loops started inverted flight three done square loop maneuver moved follow outside round loops followed horizontal eights vertical eights overhead eights new maneuver destined nemesis square eight rules cycle kept pattern same 1954 rules cycle 1955-56 according copy rule book sent Bill Netzeband changed appearance points range 3 24 triangle figure added time spring 1957 George Aldrich asked Carl Wheeley AMA work over stunt rules According recent conversa tion George remember memories 23 years ago made scores range 0 40 however through printing editing error scores came out rule book 10-40 maneuvers except landing George said tried couple years get 10-40 changed back original 0-40 couldnt get rules altered also know 57 pattern added hourglass figure four leaf clover George said got idea four leaf clover pattern used old New York Mirror Meet hourglass Georges idea tri angular vertical eight doesnt remember named figure hourglass does remember Bill Netzeband wrote him showing maneuver couldnt done written described rule book Someone Europe finally wrote description hourglass could actually performed George also changed appearance points maximum 40 Aldrich pattern stayed effect until appearance points changed 74-75 rules cycle Also 76-77 rules cycle allowed contestants use backup model case crash equipment failure Because space etc have left Out some sublime points such pull testing descrip tion maneuvers 45 60 degrees instance some other information idea present development pattern first Nationals information stunt PAMPA contact Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Scale/Gretz continued page 41 absolute full high throttle gear would stay up until throttle moved back down about * SERVO REvERSAL sWITCHES-With just flip asruitch serco ttavel direction four primary channels can reversed * INDEPENDENT THROW ADJU5T-Ou chotroels thr amount servo travel coo con rrolled udependently * FIFTH CHANNEL ADJUSTServo pouttion etracr switch either rhe Up Down poritioo independently adjustable * TRIM LOCATION VARIABLESTIre locuriun trims us builders discretion yoo cue have standard trim otossed trim oe comhinasiou two * TRIM AUTHORITY PROGRAMMABILITY-By nhaugtng plug-in fined resistors amount servo incursion olsen trims meved progeammable * DUAL RATE--Switches adjustment puss see fuotished peovide DUAL RATE up three channels nAs EXPONENTIAL RATE OPTIONThis plug-in option pronides non-litteot servo ttuoel te latiun stich movement up Ibme channels St 795 ELECTRONIC MIXER OPTIONWith plug-in module nny two functions can c tether nishee uni-dinectiunully ur bi-directinnally St 195 PROGRAMMABLE PUSH BUTTON OPTION-In-fliglrt adjustable 4pee-pengeammed onetrol nurface munemert may obtained push ing button Sf95 THE SILVER SEVEN $281195 Full ni Cd system kit receiver four servos cleeh mish puce Ace dealee meite cull foe complete details crws Complete Ceealogr $100 ladd S 550 foe 1st CIa Mail retinusol Box 511 E 119W 19th Higginsville Mo 64037 816 584-7121 1/3 speed Any degree power between full high down regardless whether engine 1/3 could used cruising flight running anywhere full idle just short bringing gear down other hand once absolute high Only throttle held gear brought down would stay firmly absolute full high throttle would gear May 1980 109 Inexpensive key word ACES new line R/C kits called Silver Series line offers unique combination value soda wide range versatility found todays RIC market until now cutting out biggest cotts Labor furnith kit furnish labor allows us give Eopquality product inexpensive price comparable $800 radios some ita features Ed Robinson tookan Enya 60 Dave PlattT-25 kitand producedtnls beautiful machine Ed Yonkers NY flies CL Sport Scale wing flaps operate Aero Gloss paints used finish model Bill Boss photo Fairey Firefly model creation o tynolds Albuquerque NM real ones used Royal Navy WW2 fighter reconnaissance aircraft Model has 40 power Bill Pepin photo fiWfldO PROPELLERS Made polyester boil color Go GRISH No 1 propeller True helical pitch airfoil win-power 2 Blade Tractor 53each 5-45 3s 4uSizes pitches 6364No 747678styles 848688 949697 98104106needs 114116118 St 1241251261U 2 Blade PusherAT YOuR DEALER 5 3 54 6-36-4Na 8-6lIe 9610651 3 BladeTractor 55 cs64eGo Pusher SOc Metaiiic iumnuru color Tractor h76 *1 8688sta 96 0610451 Puther1061N triggered cycle up same benefits independent-cycle throttle-triggering can achieved flaps using system shown months drawing arrangement what have sport scale PT-19 know several other noted competition fliers have done basically same way flaps actually being moved RC type electric servo gets its power onboard battery pack servo triggered move first completely direction completely other two small microswitches located next throttle pushrod hump securely built onto pushrod move either direction far enough hump will depress appropriate switch actuate servo Micro-switches available Radio Shack similar store used Archer Subminiature Roller Lever Switches 5 amp $119 PT-19 exact location two switches should variable allow fine adjustment timing flap movements within motor range Ive got set up about like recommended last month retractsthe full high throttle position brings up er position brings down However setting up timing down flap model during test flights aware tendency model balloon bump flight flaps brought down plane still traveling high rate speed Make sure flaps dont start down until model has slowed enough make transition smoothly PT- 19 has removable wing 3-line bellcrank mounted fuselage elevator throttle pushrods could permanently hooked up Between microswitches mounted along throttle pushrod flap servo battery pack mounted wing have two connector plugs wiring Thus want take off wing transport part control system will affected two simple electrical connectors Theres no need undo pushrods mechanical link ages size battery pack youll need carry depends upon what kind servo get use Ive got old Bonner Duramite servo GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 57 6s&oPITcH 20 8 22 10 24 13 NEWSIZE IN 8& 1OPITcI-I 26 $16 RIGHT HAND TRACTOR inUJ BROS GEdEWEU ST JOHN INDIANA 46373 found dark corners Sigs workshop dates back about 20 years requires four AA pencell batteries Actually can lot better heavy old servo equip ment market today Id recommend get Carl Goldbergs Retract Power Systems cat no RPS-1 Although intended operating Goldbergs mechanical retract units off throttle trim RC sport pattern models power package ideally suited control line scale projects Most RC servos market today would cost between 40 80 dollars servo alone Goldberg system sells $3495 gives servo two AA cell battery box micro-switches connector plugs youll need completely assembled ready install Id consider overlooked bargains RC market today serious CL Scale enthusiast way case havent thought yet particular scale subject calls both retracts flaps would quite simple once have flap servo installed also actuate pneumatic retract valve shown last month off other side servo arm would working two additional scale operations very effectively off standard throttle system needing extra flying lines Mike Gretz Box 162 Montezuma IA 501 71 CL Racing/Lee continued page 42 arm came up short go carry model last Needless say very spectacular time As turned Out engine eaten rear hearing retainer enough metal going through engine com pletely strip plug element out engine causing quit abruptly two laps end race Oh well share bad racing luck Ballard up final heat ably pitted pick-uppitcrewfrom Texas Hedidgoodenough get win something like 605 time Last off day Slow Rat Again up first heat contest officials gave us sufficient time between events little testing setting needles etc Slow Rat running 143 during needle flight ready should have gone back van watch some paint dry Got 15 laps race motor went sour slowing down like too lean Ballard shut off bring Opened up needle -turn fired off Went less dozen laps crankshaft did its thing kind silence deafening Vic Garner up same heat running real well using TWA second pit stop became very hard start After changing plug getting restarted Vic shut off telling pit crew engine bad Sure enough looked like bushing bottom rod gone up through engine very small pieces Larry Miller Texas up next heat low aspect ratio Slow Rat K&B power Larry turning very low iSs ran beautiful race record 546 win sure didnt have flip prop times once start once first stop twice two others Ballard flying getting shut-downs just right Second place Slow Rat went Mike Gale Denver Mike AMA Slow Rat OS Tune power wrecked practice flight used Big Goodyear Ringmaster another OS Tune Because noshutoff rule Big Goodyear Mike fill thing syringe put enough fuel get required three pit stops plane will go over 70 laps 2 ounces Sunday non-AMA racing events Arizona Control Line Association Slow Rat South west Control Line Association Big Goodyear As have pointed out column past both events limited fuel capacity events no required pit stops ACLA Slow Rat flown rules quite similar AMA Slow Rat allow 40s run 015 stranded lines maximum fuel capacity ounce play game mileage versus speed competitors trying mileage Larry Miller tried event last year Buckeye very successful learned lot least enough year won event old AMA Slow Rat garage stuffed K&B 65 front put one-ounce tank went out fly thing hard believe running 162 traffic sport fuel using Stanfield Super Sport fuel brewed Lubbock Texas course has 3% nitro 65 really singing getting about 3 1 laps per tank enough three-stop race air speed made up difference Turned nice 646 win Second place went Charlie Johnson 655 SWCLA Big Goodyear still event Southwest year entries down last year 14 versus 27 times better competition strong Mike Gale current record-holder Big GY 602 first time around 615 Joe Klause last years winner second some thing like 655 Charlie Johnson third around 700 minutes interesting note three running OS Tune engines Ringmasters obvious superiority Schnuerle-ported motor showing up Its also interesting 4th 5th places went couple Texans using K&B 58s Ringmasters first attempts compete Big GY Some comments order 110 Model Aviation 3 3lade
Edition: Model Aviation - 1980/05
Page Numbers: 41, 109, 110
B SCALE Mike Gretz Last months column showed method operating pneumatic retractable landing gears off standard 3-line throttle system forgot mention greatest benefit actuating retract cycle other extra option off throttle mechanism eliminating need extra flying lines addition normal three some complex CL Scale subjects have several mechanical scale options like bombers fighters its uncommon see two three extra flying lines being used Its quite obvious additional weight drag extra lines will put greater burden model flight increased drag will especially noticeable windy day Bear mind talking about models 40 60 engine size range Its true power can minimize effects extra drag wouldnt ounce prevention worth pound cure Whether youre considering model just extra scale operation five would strongly recommend always aim keep number flying lines used absolute minimum retract system shown last month achieves aim Flaps Throttle Actuating flaps off throttle control system can just easy easier some cases retract system simplest installation have onepiece airplane wing permanently built fuselage cases flaps can moved up down simply running another HIGH THROTTLE pushrod off bellcranks throttle arm off throttle pushrod itself back flaps throttle full high position flaps will completely up throttle full low flaps will completely down drawback simple form flap/throttle operation can have completely up down flaps extreme ends throttle movement other words wanted cruise after takeoff level flight reduced power would also have live some degree down flap competition flying judges would downgrade score slightly under Realism Flight noticed unscale characteristic Better suited purposes system will allow flaps have complete up-down cycle own merely triggered throttle pushrod what last month retract system recall retracts up down cycle triggered moving throttle prescribed position momentarily after triggering posi tion independent minor changes throttle setting After raising gear going Continued page 109 TO ENGINE TO flLLLCRANK THROTTLE PUSHROD WIRE OR WOOD BUMP ON PUSHROD isonewayto add flap actuation 3-linethrottle System throttle pushrod position depicted flaps will up Theywill stay up until throttle brought back about 1/ speed time pushrod bump will activate down micro-switch May 1980 41 Onlythe sizeof tarstrips intheconcreteandthetwO-bladed props alerts ustotneractinaisnis a model Jeff Perezs Flying Fortress finished replica Knockout Dropper first 8-17 complete 50 missionsto Germany WW2 Four OS 25s powerthis 78 span craft Scale t Plane scratch-built kit L Kruse plc -- ~RETRACT SWITCH COULD ALSO BE ACTIVATED tzC SERVO N CONNECTOR FLAP HORNS UP FLAPDOWN FLAP MICRO-SWITCHMICRO- SWITCH changed appearance points range 21 77 reverse wingover maneuver added addition wingover Inside loops cut three inverted flight repositioned just after inside loops know procedure today Outside round loops started inverted flight three done square loop maneuver moved follow outside round loops followed horizontal eights vertical eights overhead eights new maneuver destined nemesis square eight rules cycle kept pattern same 1954 rules cycle 1955-56 according copy rule book sent Bill Netzeband changed appearance points range 3 24 triangle figure added time spring 1957 George Aldrich asked Carl Wheeley AMA work over stunt rules According recent conversa tion George remember memories 23 years ago made scores range 0 40 however through printing editing error scores came out rule book 10-40 maneuvers except landing George said tried couple years get 10-40 changed back original 0-40 couldnt get rules altered also know 57 pattern added hourglass figure four leaf clover George said got idea four leaf clover pattern used old New York Mirror Meet hourglass Georges idea tri angular vertical eight doesnt remember named figure hourglass does remember Bill Netzeband wrote him showing maneuver couldnt done written described rule book Someone Europe finally wrote description hourglass could actually performed George also changed appearance points maximum 40 Aldrich pattern stayed effect until appearance points changed 74-75 rules cycle Also 76-77 rules cycle allowed contestants use backup model case crash equipment failure Because space etc have left Out some sublime points such pull testing descrip tion maneuvers 45 60 degrees instance some other information idea present development pattern first Nationals information stunt PAMPA contact Wynn Paul 1640 Maywick Dr Lexington KY 40504 CL Scale/Gretz continued page 41 absolute full high throttle gear would stay up until throttle moved back down about * SERVO REvERSAL sWITCHES-With just flip asruitch serco ttavel direction four primary channels can reversed * INDEPENDENT THROW ADJU5T-Ou chotroels thr amount servo travel coo con rrolled udependently * FIFTH CHANNEL ADJUSTServo pouttion etracr switch either rhe Up Down poritioo independently adjustable * TRIM LOCATION VARIABLESTIre locuriun trims us builders discretion yoo cue have standard trim otossed trim oe comhinasiou two * TRIM AUTHORITY PROGRAMMABILITY-By nhaugtng plug-in fined resistors amount servo incursion olsen trims meved progeammable * DUAL RATE--Switches adjustment puss see fuotished peovide DUAL RATE up three channels nAs EXPONENTIAL RATE OPTIONThis plug-in option pronides non-litteot servo ttuoel te latiun stich movement up Ibme channels St 795 ELECTRONIC MIXER OPTIONWith plug-in module nny two functions can c tether nishee uni-dinectiunully ur bi-directinnally St 195 PROGRAMMABLE PUSH BUTTON OPTION-In-fliglrt adjustable 4pee-pengeammed onetrol nurface munemert may obtained push ing button Sf95 THE SILVER SEVEN $281195 Full ni Cd system kit receiver four servos cleeh mish puce Ace dealee meite cull foe complete details crws Complete Ceealogr $100 ladd S 550 foe 1st CIa Mail retinusol Box 511 E 119W 19th Higginsville Mo 64037 816 584-7121 1/3 speed Any degree power between full high down regardless whether engine 1/3 could used cruising flight running anywhere full idle just short bringing gear down other hand once absolute high Only throttle held gear brought down would stay firmly absolute full high throttle would gear May 1980 109 Inexpensive key word ACES new line R/C kits called Silver Series line offers unique combination value soda wide range versatility found todays RIC market until now cutting out biggest cotts Labor furnith kit furnish labor allows us give Eopquality product inexpensive price comparable $800 radios some ita features Ed Robinson tookan Enya 60 Dave PlattT-25 kitand producedtnls beautiful machine Ed Yonkers NY flies CL Sport Scale wing flaps operate Aero Gloss paints used finish model Bill Boss photo Fairey Firefly model creation o tynolds Albuquerque NM real ones used Royal Navy WW2 fighter reconnaissance aircraft Model has 40 power Bill Pepin photo fiWfldO PROPELLERS Made polyester boil color Go GRISH No 1 propeller True helical pitch airfoil win-power 2 Blade Tractor 53each 5-45 3s 4uSizes pitches 6364No 747678styles 848688 949697 98104106needs 114116118 St 1241251261U 2 Blade PusherAT YOuR DEALER 5 3 54 6-36-4Na 8-6lIe 9610651 3 BladeTractor 55 cs64eGo Pusher SOc Metaiiic iumnuru color Tractor h76 *1 8688sta 96 0610451 Puther1061N triggered cycle up same benefits independent-cycle throttle-triggering can achieved flaps using system shown months drawing arrangement what have sport scale PT-19 know several other noted competition fliers have done basically same way flaps actually being moved RC type electric servo gets its power onboard battery pack servo triggered move first completely direction completely other two small microswitches located next throttle pushrod hump securely built onto pushrod move either direction far enough hump will depress appropriate switch actuate servo Micro-switches available Radio Shack similar store used Archer Subminiature Roller Lever Switches 5 amp $119 PT-19 exact location two switches should variable allow fine adjustment timing flap movements within motor range Ive got set up about like recommended last month retractsthe full high throttle position brings up er position brings down However setting up timing down flap model during test flights aware tendency model balloon bump flight flaps brought down plane still traveling high rate speed Make sure flaps dont start down until model has slowed enough make transition smoothly PT- 19 has removable wing 3-line bellcrank mounted fuselage elevator throttle pushrods could permanently hooked up Between microswitches mounted along throttle pushrod flap servo battery pack mounted wing have two connector plugs wiring Thus want take off wing transport part control system will affected two simple electrical connectors Theres no need undo pushrods mechanical link ages size battery pack youll need carry depends upon what kind servo get use Ive got old Bonner Duramite servo GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 318 BOREALL SIZES IN18 57 6s&oPITcH 20 8 22 10 24 13 NEWSIZE IN 8& 1OPITcI-I 26 $16 RIGHT HAND TRACTOR inUJ BROS GEdEWEU ST JOHN INDIANA 46373 found dark corners Sigs workshop dates back about 20 years requires four AA pencell batteries Actually can lot better heavy old servo equip ment market today Id recommend get Carl Goldbergs Retract Power Systems cat no RPS-1 Although intended operating Goldbergs mechanical retract units off throttle trim RC sport pattern models power package ideally suited control line scale projects Most RC servos market today would cost between 40 80 dollars servo alone Goldberg system sells $3495 gives servo two AA cell battery box micro-switches connector plugs youll need completely assembled ready install Id consider overlooked bargains RC market today serious CL Scale enthusiast way case havent thought yet particular scale subject calls both retracts flaps would quite simple once have flap servo installed also actuate pneumatic retract valve shown last month off other side servo arm would working two additional scale operations very effectively off standard throttle system needing extra flying lines Mike Gretz Box 162 Montezuma IA 501 71 CL Racing/Lee continued page 42 arm came up short go carry model last Needless say very spectacular time As turned Out engine eaten rear hearing retainer enough metal going through engine com pletely strip plug element out engine causing quit abruptly two laps end race Oh well share bad racing luck Ballard up final heat ably pitted pick-uppitcrewfrom Texas Hedidgoodenough get win something like 605 time Last off day Slow Rat Again up first heat contest officials gave us sufficient time between events little testing setting needles etc Slow Rat running 143 during needle flight ready should have gone back van watch some paint dry Got 15 laps race motor went sour slowing down like too lean Ballard shut off bring Opened up needle -turn fired off Went less dozen laps crankshaft did its thing kind silence deafening Vic Garner up same heat running real well using TWA second pit stop became very hard start After changing plug getting restarted Vic shut off telling pit crew engine bad Sure enough looked like bushing bottom rod gone up through engine very small pieces Larry Miller Texas up next heat low aspect ratio Slow Rat K&B power Larry turning very low iSs ran beautiful race record 546 win sure didnt have flip prop times once start once first stop twice two others Ballard flying getting shut-downs just right Second place Slow Rat went Mike Gale Denver Mike AMA Slow Rat OS Tune power wrecked practice flight used Big Goodyear Ringmaster another OS Tune Because noshutoff rule Big Goodyear Mike fill thing syringe put enough fuel get required three pit stops plane will go over 70 laps 2 ounces Sunday non-AMA racing events Arizona Control Line Association Slow Rat South west Control Line Association Big Goodyear As have pointed out column past both events limited fuel capacity events no required pit stops ACLA Slow Rat flown rules quite similar AMA Slow Rat allow 40s run 015 stranded lines maximum fuel capacity ounce play game mileage versus speed competitors trying mileage Larry Miller tried event last year Buckeye very successful learned lot least enough year won event old AMA Slow Rat garage stuffed K&B 65 front put one-ounce tank went out fly thing hard believe running 162 traffic sport fuel using Stanfield Super Sport fuel brewed Lubbock Texas course has 3% nitro 65 really singing getting about 3 1 laps per tank enough three-stop race air speed made up difference Turned nice 646 win Second place went Charlie Johnson 655 SWCLA Big Goodyear still event Southwest year entries down last year 14 versus 27 times better competition strong Mike Gale current record-holder Big GY 602 first time around 615 Joe Klause last years winner second some thing like 655 Charlie Johnson third around 700 minutes interesting note three running OS Tune engines Ringmasters obvious superiority Schnuerle-ported motor showing up Its also interesting 4th 5th places went couple Texans using K&B 58s Ringmasters first attempts compete Big GY Some comments order 110 Model Aviation 3 3lade