Radio Control Scale Bob8eDollyWischer GLOW HEAT Older Engines Ross twin 60 engines always favor ite scale modelers because easily fitted cowl plane used flat four- six-cylinder engine appearance two cylinders through open cowl front offered very desirable scale authenticity Ross carburetor good its day modern carbs afford much greater reliability idle tend ency glow plug cool off quit idling always possibility firing cylinder could overcome drag dead piston rod maintaining level flight heavy ship addition airborne batteries sup plying glow heat meant adding weight good insurance against moved toward idle until click switch heard starter ap plied extended hand cranking better use external battery CONNECTIONS FOR GLOW HEAT method use connection external battery through closed circuit miniature phone jack breaks circuit internal battery phone tip plug inserted Connections glow plugs made means brass collars set-screwed plugs Most important wiring should no Continued page 88 SWrrCZN~ 9 4 24V NORM OPE NI CD ELEVSERVOBRAKE COILS CONNECTIONS FOR NORM CLOSED SWITCHES ON RUD SERVO ELECTRIC WHEEL BRAKES / 12 V 4 AMP NI CD NORM OPEN SWITCH ON THR SERVO CLOSED CIRCUIT MINI JACK unwanted landing half engine Red Scofield GE Battery Division points out single 4-ampere nickel cadmium D cell 1-amp D cell will supply sufficient current heat two glow plugs bright red connected parallel single cell capable 10-amp discharge two plugs draw about 6 amps limiting factor time freshly charged cell has life one-half hour used continuously heating two plugs addition small switch operated throttle servo supply power idle will extend life cell flights Glow heat also useful ultra-reliable idle single-cylinder engines Compact switches appli cation miniature snap action type made Unimax Micro can actuated directly servo arm normally open contacts used close throttle servo goes its low position engine can started quickly electric starter no ex ternal starting glow battery needed throttle control transmitter 22 Model Aviation handful airplane lts 17-pound Dornier 335A twin-engine push-pull fighter Displayed Toledo powered two K&B 61s Perry pumps long way between enginesi GLO PLUG OR 2 asys rn Magnificent Men Flying Machines rare Fokker Spider displayed Toledo Bob Vail Weighing 8 pounds its 1320 sq wing area powered K&B 61 stable-looking machine has good flierand dozens wires turnbuckles description perform another pat tern maneuver some new ideas fun fly events Ron Van Putte 12 Connie Drive Shah mar FL 32579 RC Scale Wischers continued page 22 smaller no 18 stranded lengths short possible avoid age drop long leads use heavier wire Wiring glow plugs can hidden inside cowl no need provide holes glow connector phone jack easily concealed Wires external battery used must properly -polarized insertion phone plug does cause momentary short reliable starting cowled-in en gines use pair 4-ampere nickel cadmium batteries either wet cells D cells connected series 6-ampere diode acts voltage regulator reduce 24 volts useable 14 volts arrangement have large supply available current provides brilliant glow either two plugs Fox plugs last sev eral seasons older engines still have original plugs Nickel cadmiums series boon winter flying can used heat engine through plug will start engine badly flooded connections should made through solder lugs leads battery plane no 18 wire should kept short 12 18 ideas intended show approach solution scale modelers special problems can improved upon Other Mini Switch Applications Electric wheel brakes useful taxiing although necessity Precision Scale class competition flying taxi maneuver hangar main wheels stopping within marked circle will add points accomplish manner requiring minimum installation minia ture snap-action switch mounted above elevator servo actuated servo arm full down elevator pair 450-mah A-A size nickel cadmium cells 24 volts will energize two Aero piccola electric brakes con nected parallel braking action two cells will bring 9-pound plane gentle stop Three cells will provide drastic action have found some planes will try nose over Brakes never used high speed tended taxi adding two switches rudder servo actuated full right left rudder differential steering action can obtained aid taxiing high wind normally closed contacts used opened full rudder servo action switch right brake opened left rudder operation down elevator applied energize brakes rudder direction other cuts off energy unwanted brake normal taxiing no brake action until down elevator applied Down elevator used rather up el evator because tail-wheel plane full up elevator used stall land ing brake action landing speed desirable Individual brakes weigh slightly 1 ounce 2 pen cells weigh 1 ounces switch weighs e total about 4 ounces including wiring Wire size preferably no 20 A-A pen cell nickel cadmiums charged often servo flight pack Aeropiccola electric brakes obtainable Hobby Lobby other complete suppliers number years ago circuits product review product review product review Gapless Hinge Slotter New hinge assembly tool makes accurate centered slots four popular sizes balsa sheet 3/32 1/8 3/16 1/4 After placing sheet against guide tool run back forth along edge until blade has reached full depth Price including blade $195 Fourmost Racing Pro ducts 4040 24th Ave Forest Grove OR 97116 product review product review product review published employed signal unused receiver channels proportional operation brakes switches prefer automatic operation actua tion existing servos Sport Scale competitors noncompeting fliers add brakes satisfaction gain scalelike operation experience add realism taxi operations Some planes brakes impossible stop pavement engine idling grass fields brakes really required First Steps RC Scale receive let ters modelers inspired build first radio controlled plane multi-engine ship retracting landing gear flaps addition other op erating features prefer nobto discour age ambitious person because possible may eventually succeed become active sport hobby advise first attempt RC should simple trainer-type plane person has previous experience free flight control-line possibility loss damage during learning proc ess too great step controlline radio control demanding expected scale model less ex pendable trainer Another common question asked regard sources drawings informa tion about particular prototype modeler has seen photo small kit desires enlarge drawings size suitable RC searching easy quick method procedure advice multiply dimensions suitable factor job mathemat ically electronic calculator available question material strength enlarging kit can best answered copying what others have done larger planes Quite often search memories find draw ing desired plane has already published available through plans services may kit plane first step RC Scale modeling way go using experience designer determine strength requirements building methods Toledo Again Radio Control Scale has made rapid progress number par ticipants credit must given increase Sport Scale activity Approximately half products kits displays Toledo year scale oriented what seemed prejudiced outlook Most new kits large engines scale Large en gines well prop drive units stan dard glow engines slanted toward scale model market Fox Midwest showing two-cylinder engines Quadra engine evidence planes some builders insisting must mounted solidly avoid vibration problems others equally vocal favor 88 Model Aviation SUPER COVER ITE NOW COMES IN NEW COLOR zz ANTIQUE FABRIC simulates look old t rplane cover ngs TEJ L WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities RIC construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH us. SUBSCRIBE NOW AND GET 3 PEE ISSUES Fill out send coupon check Money Order year subscription $1500 will re ceive 3 additional FREE ISSUES total savings $750 Mail to. MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v32][b-1-10-1-10]] REGULAR SUBSCRIPTION IS $1500 SUBSCRIBE NOW AND__________________________________________ SAVE $750! RECEIVE 15 ISSUES AT ONE-THIRD OFF City ____________________________ State ____________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount [v32][b-1-10-1-10]] Name Address rubber mounts identical reasons Andy Sheber showing prop drive unit 2-to-I reduction ratio Quadra engine converts usual 16 pounds thrust 20 pounds Ducted fan applications appeared greater numbers year new design Duane Johnson will kitted World Engines employs shrouded fan twin installation shown mounted McDonnell Douglas F-IS Duane uses product review product review product review Kiwi For 4-channel radio 35-45 engines new 54 low wing trike gear fol lows popular trent smaller less power ful airplanes reduced fuel requirements Typical manufacturers RC kits Kiwi kit complete including such things clear bubble prebent torsion-bar main landing gear coil spring nose gear nylon nose-gear bearing arm aluminum motor mounts nylon bolts RC links threaded rods wing aileron torque rods illustrated struction book decal sheet etc Price $3750 Sig Manufacturing Co Montezuma IA 50171 product review product review product review Supertigre X40s exhaust throttles plane handles air very similar pattern ship Quarter-size one-third-size models considered large past year half-size Aeronca Champion ap peared heard weighed over 30 pounds Editor Some say 75 lbs An exhibitor attracted attention scale modelers Eastcraft Specialty Products display Lecta-Start on-board engine starters being used start engines sizes including Quadra found way elim inating exhaust fumes engines could started run exhibit building product seems spark imagination scale modelers being seen increasing frequency flying field Bob Wischer Rt 1 S-221 Lap/mm Peak Road Delafield WI 53018 RC Pylon/Lane continued page 23 third round Columns 1 4 4th round alternately 8th round everyone repeat Try out see Should forced situa tion can juggle numbers Columns 3 4 keep Column 3s Col umn 3 Column 4s Column 4 can just use matrix Fig V-A four rounds 4 hard part done lets set up five rounds five heats round See Fig III use numbers its quicker straightforward names Take note Round 1 five heats parens four columns FIG II SORTING OUT THE 4 GROUPS OF FREQUENCIES Group*NoFrequencyName 17224P Racer 27224I Krash 37224U Kutt 427095C Brown 527195M Great 67240I Duto 77240B Egoe 28I7240C Catt 97216iCool 107224C Threeplo 117208lGoe 127208S Wing 3135210A Gluttin 145330P Green 155215A Misfitte 167232A Hakk 177232B Wheel 41872960 Batry 197296A Deeler See Instruction 3 August1978 89
Edition: Model Aviation - 1978/08
Page Numbers: 22, 88, 89
Radio Control Scale Bob8eDollyWischer GLOW HEAT Older Engines Ross twin 60 engines always favor ite scale modelers because easily fitted cowl plane used flat four- six-cylinder engine appearance two cylinders through open cowl front offered very desirable scale authenticity Ross carburetor good its day modern carbs afford much greater reliability idle tend ency glow plug cool off quit idling always possibility firing cylinder could overcome drag dead piston rod maintaining level flight heavy ship addition airborne batteries sup plying glow heat meant adding weight good insurance against moved toward idle until click switch heard starter ap plied extended hand cranking better use external battery CONNECTIONS FOR GLOW HEAT method use connection external battery through closed circuit miniature phone jack breaks circuit internal battery phone tip plug inserted Connections glow plugs made means brass collars set-screwed plugs Most important wiring should no Continued page 88 SWrrCZN~ 9 4 24V NORM OPE NI CD ELEVSERVOBRAKE COILS CONNECTIONS FOR NORM CLOSED SWITCHES ON RUD SERVO ELECTRIC WHEEL BRAKES / 12 V 4 AMP NI CD NORM OPEN SWITCH ON THR SERVO CLOSED CIRCUIT MINI JACK unwanted landing half engine Red Scofield GE Battery Division points out single 4-ampere nickel cadmium D cell 1-amp D cell will supply sufficient current heat two glow plugs bright red connected parallel single cell capable 10-amp discharge two plugs draw about 6 amps limiting factor time freshly charged cell has life one-half hour used continuously heating two plugs addition small switch operated throttle servo supply power idle will extend life cell flights Glow heat also useful ultra-reliable idle single-cylinder engines Compact switches appli cation miniature snap action type made Unimax Micro can actuated directly servo arm normally open contacts used close throttle servo goes its low position engine can started quickly electric starter no ex ternal starting glow battery needed throttle control transmitter 22 Model Aviation handful airplane lts 17-pound Dornier 335A twin-engine push-pull fighter Displayed Toledo powered two K&B 61s Perry pumps long way between enginesi GLO PLUG OR 2 asys rn Magnificent Men Flying Machines rare Fokker Spider displayed Toledo Bob Vail Weighing 8 pounds its 1320 sq wing area powered K&B 61 stable-looking machine has good flierand dozens wires turnbuckles description perform another pat tern maneuver some new ideas fun fly events Ron Van Putte 12 Connie Drive Shah mar FL 32579 RC Scale Wischers continued page 22 smaller no 18 stranded lengths short possible avoid age drop long leads use heavier wire Wiring glow plugs can hidden inside cowl no need provide holes glow connector phone jack easily concealed Wires external battery used must properly -polarized insertion phone plug does cause momentary short reliable starting cowled-in en gines use pair 4-ampere nickel cadmium batteries either wet cells D cells connected series 6-ampere diode acts voltage regulator reduce 24 volts useable 14 volts arrangement have large supply available current provides brilliant glow either two plugs Fox plugs last sev eral seasons older engines still have original plugs Nickel cadmiums series boon winter flying can used heat engine through plug will start engine badly flooded connections should made through solder lugs leads battery plane no 18 wire should kept short 12 18 ideas intended show approach solution scale modelers special problems can improved upon Other Mini Switch Applications Electric wheel brakes useful taxiing although necessity Precision Scale class competition flying taxi maneuver hangar main wheels stopping within marked circle will add points accomplish manner requiring minimum installation minia ture snap-action switch mounted above elevator servo actuated servo arm full down elevator pair 450-mah A-A size nickel cadmium cells 24 volts will energize two Aero piccola electric brakes con nected parallel braking action two cells will bring 9-pound plane gentle stop Three cells will provide drastic action have found some planes will try nose over Brakes never used high speed tended taxi adding two switches rudder servo actuated full right left rudder differential steering action can obtained aid taxiing high wind normally closed contacts used opened full rudder servo action switch right brake opened left rudder operation down elevator applied energize brakes rudder direction other cuts off energy unwanted brake normal taxiing no brake action until down elevator applied Down elevator used rather up el evator because tail-wheel plane full up elevator used stall land ing brake action landing speed desirable Individual brakes weigh slightly 1 ounce 2 pen cells weigh 1 ounces switch weighs e total about 4 ounces including wiring Wire size preferably no 20 A-A pen cell nickel cadmiums charged often servo flight pack Aeropiccola electric brakes obtainable Hobby Lobby other complete suppliers number years ago circuits product review product review product review Gapless Hinge Slotter New hinge assembly tool makes accurate centered slots four popular sizes balsa sheet 3/32 1/8 3/16 1/4 After placing sheet against guide tool run back forth along edge until blade has reached full depth Price including blade $195 Fourmost Racing Pro ducts 4040 24th Ave Forest Grove OR 97116 product review product review product review published employed signal unused receiver channels proportional operation brakes switches prefer automatic operation actua tion existing servos Sport Scale competitors noncompeting fliers add brakes satisfaction gain scalelike operation experience add realism taxi operations Some planes brakes impossible stop pavement engine idling grass fields brakes really required First Steps RC Scale receive let ters modelers inspired build first radio controlled plane multi-engine ship retracting landing gear flaps addition other op erating features prefer nobto discour age ambitious person because possible may eventually succeed become active sport hobby advise first attempt RC should simple trainer-type plane person has previous experience free flight control-line possibility loss damage during learning proc ess too great step controlline radio control demanding expected scale model less ex pendable trainer Another common question asked regard sources drawings informa tion about particular prototype modeler has seen photo small kit desires enlarge drawings size suitable RC searching easy quick method procedure advice multiply dimensions suitable factor job mathemat ically electronic calculator available question material strength enlarging kit can best answered copying what others have done larger planes Quite often search memories find draw ing desired plane has already published available through plans services may kit plane first step RC Scale modeling way go using experience designer determine strength requirements building methods Toledo Again Radio Control Scale has made rapid progress number par ticipants credit must given increase Sport Scale activity Approximately half products kits displays Toledo year scale oriented what seemed prejudiced outlook Most new kits large engines scale Large en gines well prop drive units stan dard glow engines slanted toward scale model market Fox Midwest showing two-cylinder engines Quadra engine evidence planes some builders insisting must mounted solidly avoid vibration problems others equally vocal favor 88 Model Aviation SUPER COVER ITE NOW COMES IN NEW COLOR zz ANTIQUE FABRIC simulates look old t rplane cover ngs TEJ L WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities RIC construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH us. SUBSCRIBE NOW AND GET 3 PEE ISSUES Fill out send coupon check Money Order year subscription $1500 will re ceive 3 additional FREE ISSUES total savings $750 Mail to. MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v32][b-1-10-1-10]] REGULAR SUBSCRIPTION IS $1500 SUBSCRIBE NOW AND__________________________________________ SAVE $750! RECEIVE 15 ISSUES AT ONE-THIRD OFF City ____________________________ State ____________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount [v32][b-1-10-1-10]] Name Address rubber mounts identical reasons Andy Sheber showing prop drive unit 2-to-I reduction ratio Quadra engine converts usual 16 pounds thrust 20 pounds Ducted fan applications appeared greater numbers year new design Duane Johnson will kitted World Engines employs shrouded fan twin installation shown mounted McDonnell Douglas F-IS Duane uses product review product review product review Kiwi For 4-channel radio 35-45 engines new 54 low wing trike gear fol lows popular trent smaller less power ful airplanes reduced fuel requirements Typical manufacturers RC kits Kiwi kit complete including such things clear bubble prebent torsion-bar main landing gear coil spring nose gear nylon nose-gear bearing arm aluminum motor mounts nylon bolts RC links threaded rods wing aileron torque rods illustrated struction book decal sheet etc Price $3750 Sig Manufacturing Co Montezuma IA 50171 product review product review product review Supertigre X40s exhaust throttles plane handles air very similar pattern ship Quarter-size one-third-size models considered large past year half-size Aeronca Champion ap peared heard weighed over 30 pounds Editor Some say 75 lbs An exhibitor attracted attention scale modelers Eastcraft Specialty Products display Lecta-Start on-board engine starters being used start engines sizes including Quadra found way elim inating exhaust fumes engines could started run exhibit building product seems spark imagination scale modelers being seen increasing frequency flying field Bob Wischer Rt 1 S-221 Lap/mm Peak Road Delafield WI 53018 RC Pylon/Lane continued page 23 third round Columns 1 4 4th round alternately 8th round everyone repeat Try out see Should forced situa tion can juggle numbers Columns 3 4 keep Column 3s Col umn 3 Column 4s Column 4 can just use matrix Fig V-A four rounds 4 hard part done lets set up five rounds five heats round See Fig III use numbers its quicker straightforward names Take note Round 1 five heats parens four columns FIG II SORTING OUT THE 4 GROUPS OF FREQUENCIES Group*NoFrequencyName 17224P Racer 27224I Krash 37224U Kutt 427095C Brown 527195M Great 67240I Duto 77240B Egoe 28I7240C Catt 97216iCool 107224C Threeplo 117208lGoe 127208S Wing 3135210A Gluttin 145330P Green 155215A Misfitte 167232A Hakk 177232B Wheel 41872960 Batry 197296A Deeler See Instruction 3 August1978 89
Edition: Model Aviation - 1978/08
Page Numbers: 22, 88, 89
Radio Control Scale Bob8eDollyWischer GLOW HEAT Older Engines Ross twin 60 engines always favor ite scale modelers because easily fitted cowl plane used flat four- six-cylinder engine appearance two cylinders through open cowl front offered very desirable scale authenticity Ross carburetor good its day modern carbs afford much greater reliability idle tend ency glow plug cool off quit idling always possibility firing cylinder could overcome drag dead piston rod maintaining level flight heavy ship addition airborne batteries sup plying glow heat meant adding weight good insurance against moved toward idle until click switch heard starter ap plied extended hand cranking better use external battery CONNECTIONS FOR GLOW HEAT method use connection external battery through closed circuit miniature phone jack breaks circuit internal battery phone tip plug inserted Connections glow plugs made means brass collars set-screwed plugs Most important wiring should no Continued page 88 SWrrCZN~ 9 4 24V NORM OPE NI CD ELEVSERVOBRAKE COILS CONNECTIONS FOR NORM CLOSED SWITCHES ON RUD SERVO ELECTRIC WHEEL BRAKES / 12 V 4 AMP NI CD NORM OPEN SWITCH ON THR SERVO CLOSED CIRCUIT MINI JACK unwanted landing half engine Red Scofield GE Battery Division points out single 4-ampere nickel cadmium D cell 1-amp D cell will supply sufficient current heat two glow plugs bright red connected parallel single cell capable 10-amp discharge two plugs draw about 6 amps limiting factor time freshly charged cell has life one-half hour used continuously heating two plugs addition small switch operated throttle servo supply power idle will extend life cell flights Glow heat also useful ultra-reliable idle single-cylinder engines Compact switches appli cation miniature snap action type made Unimax Micro can actuated directly servo arm normally open contacts used close throttle servo goes its low position engine can started quickly electric starter no ex ternal starting glow battery needed throttle control transmitter 22 Model Aviation handful airplane lts 17-pound Dornier 335A twin-engine push-pull fighter Displayed Toledo powered two K&B 61s Perry pumps long way between enginesi GLO PLUG OR 2 asys rn Magnificent Men Flying Machines rare Fokker Spider displayed Toledo Bob Vail Weighing 8 pounds its 1320 sq wing area powered K&B 61 stable-looking machine has good flierand dozens wires turnbuckles description perform another pat tern maneuver some new ideas fun fly events Ron Van Putte 12 Connie Drive Shah mar FL 32579 RC Scale Wischers continued page 22 smaller no 18 stranded lengths short possible avoid age drop long leads use heavier wire Wiring glow plugs can hidden inside cowl no need provide holes glow connector phone jack easily concealed Wires external battery used must properly -polarized insertion phone plug does cause momentary short reliable starting cowled-in en gines use pair 4-ampere nickel cadmium batteries either wet cells D cells connected series 6-ampere diode acts voltage regulator reduce 24 volts useable 14 volts arrangement have large supply available current provides brilliant glow either two plugs Fox plugs last sev eral seasons older engines still have original plugs Nickel cadmiums series boon winter flying can used heat engine through plug will start engine badly flooded connections should made through solder lugs leads battery plane no 18 wire should kept short 12 18 ideas intended show approach solution scale modelers special problems can improved upon Other Mini Switch Applications Electric wheel brakes useful taxiing although necessity Precision Scale class competition flying taxi maneuver hangar main wheels stopping within marked circle will add points accomplish manner requiring minimum installation minia ture snap-action switch mounted above elevator servo actuated servo arm full down elevator pair 450-mah A-A size nickel cadmium cells 24 volts will energize two Aero piccola electric brakes con nected parallel braking action two cells will bring 9-pound plane gentle stop Three cells will provide drastic action have found some planes will try nose over Brakes never used high speed tended taxi adding two switches rudder servo actuated full right left rudder differential steering action can obtained aid taxiing high wind normally closed contacts used opened full rudder servo action switch right brake opened left rudder operation down elevator applied energize brakes rudder direction other cuts off energy unwanted brake normal taxiing no brake action until down elevator applied Down elevator used rather up el evator because tail-wheel plane full up elevator used stall land ing brake action landing speed desirable Individual brakes weigh slightly 1 ounce 2 pen cells weigh 1 ounces switch weighs e total about 4 ounces including wiring Wire size preferably no 20 A-A pen cell nickel cadmiums charged often servo flight pack Aeropiccola electric brakes obtainable Hobby Lobby other complete suppliers number years ago circuits product review product review product review Gapless Hinge Slotter New hinge assembly tool makes accurate centered slots four popular sizes balsa sheet 3/32 1/8 3/16 1/4 After placing sheet against guide tool run back forth along edge until blade has reached full depth Price including blade $195 Fourmost Racing Pro ducts 4040 24th Ave Forest Grove OR 97116 product review product review product review published employed signal unused receiver channels proportional operation brakes switches prefer automatic operation actua tion existing servos Sport Scale competitors noncompeting fliers add brakes satisfaction gain scalelike operation experience add realism taxi operations Some planes brakes impossible stop pavement engine idling grass fields brakes really required First Steps RC Scale receive let ters modelers inspired build first radio controlled plane multi-engine ship retracting landing gear flaps addition other op erating features prefer nobto discour age ambitious person because possible may eventually succeed become active sport hobby advise first attempt RC should simple trainer-type plane person has previous experience free flight control-line possibility loss damage during learning proc ess too great step controlline radio control demanding expected scale model less ex pendable trainer Another common question asked regard sources drawings informa tion about particular prototype modeler has seen photo small kit desires enlarge drawings size suitable RC searching easy quick method procedure advice multiply dimensions suitable factor job mathemat ically electronic calculator available question material strength enlarging kit can best answered copying what others have done larger planes Quite often search memories find draw ing desired plane has already published available through plans services may kit plane first step RC Scale modeling way go using experience designer determine strength requirements building methods Toledo Again Radio Control Scale has made rapid progress number par ticipants credit must given increase Sport Scale activity Approximately half products kits displays Toledo year scale oriented what seemed prejudiced outlook Most new kits large engines scale Large en gines well prop drive units stan dard glow engines slanted toward scale model market Fox Midwest showing two-cylinder engines Quadra engine evidence planes some builders insisting must mounted solidly avoid vibration problems others equally vocal favor 88 Model Aviation SUPER COVER ITE NOW COMES IN NEW COLOR zz ANTIQUE FABRIC simulates look old t rplane cover ngs TEJ L WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities RIC construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH us. SUBSCRIBE NOW AND GET 3 PEE ISSUES Fill out send coupon check Money Order year subscription $1500 will re ceive 3 additional FREE ISSUES total savings $750 Mail to. MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v32][b-1-10-1-10]] REGULAR SUBSCRIPTION IS $1500 SUBSCRIBE NOW AND__________________________________________ SAVE $750! RECEIVE 15 ISSUES AT ONE-THIRD OFF City ____________________________ State ____________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount [v32][b-1-10-1-10]] Name Address rubber mounts identical reasons Andy Sheber showing prop drive unit 2-to-I reduction ratio Quadra engine converts usual 16 pounds thrust 20 pounds Ducted fan applications appeared greater numbers year new design Duane Johnson will kitted World Engines employs shrouded fan twin installation shown mounted McDonnell Douglas F-IS Duane uses product review product review product review Kiwi For 4-channel radio 35-45 engines new 54 low wing trike gear fol lows popular trent smaller less power ful airplanes reduced fuel requirements Typical manufacturers RC kits Kiwi kit complete including such things clear bubble prebent torsion-bar main landing gear coil spring nose gear nylon nose-gear bearing arm aluminum motor mounts nylon bolts RC links threaded rods wing aileron torque rods illustrated struction book decal sheet etc Price $3750 Sig Manufacturing Co Montezuma IA 50171 product review product review product review Supertigre X40s exhaust throttles plane handles air very similar pattern ship Quarter-size one-third-size models considered large past year half-size Aeronca Champion ap peared heard weighed over 30 pounds Editor Some say 75 lbs An exhibitor attracted attention scale modelers Eastcraft Specialty Products display Lecta-Start on-board engine starters being used start engines sizes including Quadra found way elim inating exhaust fumes engines could started run exhibit building product seems spark imagination scale modelers being seen increasing frequency flying field Bob Wischer Rt 1 S-221 Lap/mm Peak Road Delafield WI 53018 RC Pylon/Lane continued page 23 third round Columns 1 4 4th round alternately 8th round everyone repeat Try out see Should forced situa tion can juggle numbers Columns 3 4 keep Column 3s Col umn 3 Column 4s Column 4 can just use matrix Fig V-A four rounds 4 hard part done lets set up five rounds five heats round See Fig III use numbers its quicker straightforward names Take note Round 1 five heats parens four columns FIG II SORTING OUT THE 4 GROUPS OF FREQUENCIES Group*NoFrequencyName 17224P Racer 27224I Krash 37224U Kutt 427095C Brown 527195M Great 67240I Duto 77240B Egoe 28I7240C Catt 97216iCool 107224C Threeplo 117208lGoe 127208S Wing 3135210A Gluttin 145330P Green 155215A Misfitte 167232A Hakk 177232B Wheel 41872960 Batry 197296A Deeler See Instruction 3 August1978 89