NO OCR TEXT NO OCR TEXT new_releases Bucker JUNGMEISTER 11/2 radio control 049 power$1&95don sruul great schoolyard scale TRAVEL AIR 020 power 36span wingspan SeaguIJP for rubber available soon C02 power SEE YOURsend 25* DEALER NOWcatalog FLYLINE MODELS INC 2020 OORRAVENUE RIO UOSIS7s4038 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new P30 class model designed novice mind has potential win toughest THE POTENT-30 Deluxe kit features include Rolled balsa fuselage wing mount dt Completed prop d nose plug tail plug & rudder Precut wing ribs spar notches lob rated balsa strips Highest quality tissue lubed contest rubber Detailed Inutructions flying tipn help minI CAT NO R2 $695 PP check money order CHAS WRLE 3620 MORSE AVE NOS SACTO CALIF 95821 Radio Technique/Myers continued page 23 frequency Section IC decoder crystal fifth-overtone type mighty thin shock mounted between pieces foam rubber Bob flies Formula feels shock mounting crystal important feature based flying ex perience found receiver technically interesting because features double balanced mixer cancels mixing products except desired intermediate frequency Novak Electronics produces flight packs using receiver Bantam Midget servos servos also teresting because feature 6a sec deadband temperature controlled over range O 1 500F Output 21 in/oz torque moving 900 just 27 seconds next item caught fancy MEN Automatic R/G System Charger shown Fig 4 idea can leave RC system connected device forever will recharge batteries drop back trickle charge necessary whole lot better charging though trickle charging nickle-cadmium batteries generally dis couraged battery manual have read fact verified way develop battery memory use trickle charger company consis tently repeated discharge cycle Lest think am denigrating device let repeat Its whole lot better recharging use device during flying season should get better service RC system just dont know trickle charging through winter season better full recharge once month Servos big news manufacturers either soon will have larger servos scale enthusiasts Royal Electronics al ready has Chevron servo well smaller cheaper would believe $2650 kit servo using Jomac racing car mechanicals Chevron servo-amplifier Kraft Systems Inc al ready has KPS- 16 servo soon will adding KPS- 19 its line will somewhat larger KPS- 16 will feature metal gears choice two operating speeds maximum output 160 in/oz torque Ace RIG Inc has big works will use new D&R mechanicals Several other manufac turers spoke having large servos soon Dunham D&R able provide necessary mechanical parts Bill Haga Bob Elliot Logictrol International Corp spoke new servo due out April will same size MM servo feature T1544 chip 24 ohm motor glass-filled nylon gears manufactured molybdenum disulfide toughen teeth control dimensional variations molding proc ess Bob Bill sure gear teeth will resist rounding better others currently market Fig 5 shows World Engines S-12 servo being custom-made pattern fliers intent design provide extremely durable servo reason uses drum-shaped potentio meter see photo two advan tages First drum puts much longer resistance track given diameter gives better wear-resistance better resolution hence accurate centering servo Secondly wipers arranged parallel potentiometer shaft gives better isolation vibration transmitted pot pushrod Reduced vibration means less wear will also notice servo uses three gears set first gear internal gear arrangement makes tighter system usual four-gear setup All-in-all impresses intelligent solution design problem making very durable servo $75 Finally least column see Fig 6 friend Don Clark Soaring Products displaying Thermic Sniff ler system sniffing out thermals RC sailplane consists tiny variometer 49MHz trans mitter mounted within sailplane walkie-talkie receiver mounted hip pocket operation system emits rising tone variometer senses rising air falling tone falling air important point system will permit license-free operation type-approved FCC As case rest systems frequencies used transmission shared other users notably lot model racing cars sold through Radio Shack past Christmas season about 100000 single-channel rudder-only airplanes being distributed Cox Hob bies Inc Time will tell whether will problem thing certain sailplane wont affected problem apologies good folks something sell show didnt get mentioned Lack mention indi cates shortage space criticism product Keep letters coming folks WRAMS SHOW NOTES Fox Twin now production basically pair 60-cc engines connected back-to-back puts out over 3 hp run 14500 rpm Structural parts really massive permitting use large props Duke says best way adjust twin carburetors work back-tofront low-to-high Simultaneous op posed firing makes very low vibration level operation . Royal Electronics Royal Classic transmitter has twin throttle trims Channels 4 & 8 can tied together electrically twin-engine operation Trim levers work low throttle position optimum idle adjustment switch transmitter allows selection full- half-linear control exponential control 106 Model Aviation 12 channel RIC free flight 51495 EXPERT BUILDERS WANTED Send us list accomplishments photos ol planes PIPER TRIPACER Ouarler Scale 89' wingspan 42 Sq H ot dtlailed plans$16 95 P P CURTIS HAWK P6E 60 wingspan 46 Sq Ft r delailed scale plans $1295 P P Send $1 00 tsr list builtap Planes & 50% Ott Sale Hobby Capitol Dist 46 N Oak St Ventura Ca 93001 Ph-805-643-761 6 i1flO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor -3 -4s-35 4 304 6364 354 47-678 504 48-688 654 -49-69-7 -810-410-6 854needS -411-6118 Si 1-412-612-65150 2 Blade PusherAT YOUR DEALER 3 Blade Tractor 3 Blade Pusher etallic Aluminum 9-6 106 104 S150 Pusher106 5150 four flight controls can reversed reversing plugs inside transmitter Pro-line reports new servo underway PLS1 53 will work either positive negative pulse systems Water proof will have ballbearing output use Geisendnner pot Logictrol International Corp has FM set under development use new Sig netics IC encoder decoder chips producing XM servo large models using 24 ohm motor glassfilled nylon gears Output 6 pounds st.. Cannon Electronics delighted join Under $200 club model 825 system nicad system Ban tam Servos Tini transmitter.. Charlie K/C featuring Bantam Midget servo new IC servo-amp largest crowds show gathered around Eastcraft Specialty Prod ucts Inc watch Fred Eastman push button transmitter start engines boats planes using Lectra Start system.. Midwest Model Products importing Hirtenberger HP1 20 Tournament Champions sized models alternate-firing inline twin made up parts two 60 engines special interstructure contains carburetor valve mechanism 3 hp $350 George Meyers 70Fmehlich Farm Rd Hicksville NY 11801 Curtiss Coupe/Jessee continued page 28 laminating balsa stock together using spot cementing cut four outer pant parts two inner core parts Epoxy parts together using thin coats contacting surface pins insure alignment parts Clamp use weights until parts dry template GRISH LARGE WOOD PROPELLERS HARDWOOD. too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BORE ALL SIZES IN18 S7 6B&loPTcH 20B 22 10 24 13 NEW SIZE 8 PITCH 26 $16 RIGHT HAND TRACTOR 0 RUSH ST JOHN INDIANA 46373 pant mark axle hole location now dry rough paint build-up have Dremmel drill stand OK get someone has Drill -dia holes way through used some nylon bushings pant axle holes inside cemented balsa cap outside sanded smooth axle should extend through dia dowel drilled bushings use plywood washers centered over axle holes inside time fuselage tail should complete Attach wing fuselage set up cleared area work bench Slip tailwheel pants main wheels Use wheel collar inside pants lock temporarily Use block jack up rear portion pant off working surface position shown plans make cardboard jig using side profile lower wing surface top profile pant pant position established may need friendly extra hand move pant support wires inward close possible inside surface mark pant through wire eye four places locate attachment screw holes marks have added remove pants axles drill stand make four -dia holes approximately 3/8 deep Now transfer top outline shape pant onto rough pants Saw out profiles carve file sand finished shape Prepare four pieces 14 X hardwood dowel drilling 040/060 hole through four parts Slip-fit holes pants Mark around bottomed indicate cutoff line Match plugs holes Sand flush slightly below pant surface pants primed sanded finished holes will line up eyes pant retainers pants position hardwood plugs holes should 1/8 3/16 eye assembled screws will impart drawing function pulling pants inward pant sembled inserting axle through pant sidewall enough add shim washer plastic possible wheel outer shim finally retaining wheelcollar pants rotated until holes line up retaining screws added spring wires adjusted insure proper pant alignmentnot too high too low shown proper appearance Finish landing gear detail adding shock struts Wing Construction presents nothing new except jig method leading- trailingedge structure Start stack saw method preparing necessary ribs have access bandsaw one-at-a-time template method will Outline template sheet wing tip curve 1/64 ply parts Construct wing tip curve jig Foam-core very useful making quick jigs laminated ply sandwich tips take about hour total time assemble final shaping sanding blending finished panel top surface structure dry notching two jig pieces clear plywood dihedral reinforcement partsthe center section can jig built also Pin down outer panels allow dry center section being prepared T-square carpenters square draw line used align jig blocks jig blocks pine similar material lumber supply Drive small thin nails through short step notch building surface After jig blocks pinned down draw another line square across top blocks will used line up leading edge Assuming have parts ready pin leading edge trailing edge parts jig Slide ribs onto leading edge angle rotate until marked rib spacing correct Glue pin position Add triangle stock top sparout double rib located Add leading edge trailing edge sheeting cap strips drying time over notch out rib allow tip alignment extension added Use some small pieces jig block material 2 long re-jig wing small weights keep structure flat times Glue 5-mm epoxy up right left tip sub-assemblycurve top side now bottom curves added later dry slide tips plywood extensions leading edge trailing edge slots check cut fit position before gluing place tip place cut razor saw tip sheeting support strips cut cross grain will bend easily inside tip curve strips starting leading edge about 1/8 wide finish about 1/32 will allow proper taper tip 108 Model Aviation A Sizes pitches styles most
Edition: Model Aviation - 1979/06
Page Numbers: 22, 23, 106, 108
NO OCR TEXT NO OCR TEXT new_releases Bucker JUNGMEISTER 11/2 radio control 049 power$1&95don sruul great schoolyard scale TRAVEL AIR 020 power 36span wingspan SeaguIJP for rubber available soon C02 power SEE YOURsend 25* DEALER NOWcatalog FLYLINE MODELS INC 2020 OORRAVENUE RIO UOSIS7s4038 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new P30 class model designed novice mind has potential win toughest THE POTENT-30 Deluxe kit features include Rolled balsa fuselage wing mount dt Completed prop d nose plug tail plug & rudder Precut wing ribs spar notches lob rated balsa strips Highest quality tissue lubed contest rubber Detailed Inutructions flying tipn help minI CAT NO R2 $695 PP check money order CHAS WRLE 3620 MORSE AVE NOS SACTO CALIF 95821 Radio Technique/Myers continued page 23 frequency Section IC decoder crystal fifth-overtone type mighty thin shock mounted between pieces foam rubber Bob flies Formula feels shock mounting crystal important feature based flying ex perience found receiver technically interesting because features double balanced mixer cancels mixing products except desired intermediate frequency Novak Electronics produces flight packs using receiver Bantam Midget servos servos also teresting because feature 6a sec deadband temperature controlled over range O 1 500F Output 21 in/oz torque moving 900 just 27 seconds next item caught fancy MEN Automatic R/G System Charger shown Fig 4 idea can leave RC system connected device forever will recharge batteries drop back trickle charge necessary whole lot better charging though trickle charging nickle-cadmium batteries generally dis couraged battery manual have read fact verified way develop battery memory use trickle charger company consis tently repeated discharge cycle Lest think am denigrating device let repeat Its whole lot better recharging use device during flying season should get better service RC system just dont know trickle charging through winter season better full recharge once month Servos big news manufacturers either soon will have larger servos scale enthusiasts Royal Electronics al ready has Chevron servo well smaller cheaper would believe $2650 kit servo using Jomac racing car mechanicals Chevron servo-amplifier Kraft Systems Inc al ready has KPS- 16 servo soon will adding KPS- 19 its line will somewhat larger KPS- 16 will feature metal gears choice two operating speeds maximum output 160 in/oz torque Ace RIG Inc has big works will use new D&R mechanicals Several other manufac turers spoke having large servos soon Dunham D&R able provide necessary mechanical parts Bill Haga Bob Elliot Logictrol International Corp spoke new servo due out April will same size MM servo feature T1544 chip 24 ohm motor glass-filled nylon gears manufactured molybdenum disulfide toughen teeth control dimensional variations molding proc ess Bob Bill sure gear teeth will resist rounding better others currently market Fig 5 shows World Engines S-12 servo being custom-made pattern fliers intent design provide extremely durable servo reason uses drum-shaped potentio meter see photo two advan tages First drum puts much longer resistance track given diameter gives better wear-resistance better resolution hence accurate centering servo Secondly wipers arranged parallel potentiometer shaft gives better isolation vibration transmitted pot pushrod Reduced vibration means less wear will also notice servo uses three gears set first gear internal gear arrangement makes tighter system usual four-gear setup All-in-all impresses intelligent solution design problem making very durable servo $75 Finally least column see Fig 6 friend Don Clark Soaring Products displaying Thermic Sniff ler system sniffing out thermals RC sailplane consists tiny variometer 49MHz trans mitter mounted within sailplane walkie-talkie receiver mounted hip pocket operation system emits rising tone variometer senses rising air falling tone falling air important point system will permit license-free operation type-approved FCC As case rest systems frequencies used transmission shared other users notably lot model racing cars sold through Radio Shack past Christmas season about 100000 single-channel rudder-only airplanes being distributed Cox Hob bies Inc Time will tell whether will problem thing certain sailplane wont affected problem apologies good folks something sell show didnt get mentioned Lack mention indi cates shortage space criticism product Keep letters coming folks WRAMS SHOW NOTES Fox Twin now production basically pair 60-cc engines connected back-to-back puts out over 3 hp run 14500 rpm Structural parts really massive permitting use large props Duke says best way adjust twin carburetors work back-tofront low-to-high Simultaneous op posed firing makes very low vibration level operation . Royal Electronics Royal Classic transmitter has twin throttle trims Channels 4 & 8 can tied together electrically twin-engine operation Trim levers work low throttle position optimum idle adjustment switch transmitter allows selection full- half-linear control exponential control 106 Model Aviation 12 channel RIC free flight 51495 EXPERT BUILDERS WANTED Send us list accomplishments photos ol planes PIPER TRIPACER Ouarler Scale 89' wingspan 42 Sq H ot dtlailed plans$16 95 P P CURTIS HAWK P6E 60 wingspan 46 Sq Ft r delailed scale plans $1295 P P Send $1 00 tsr list builtap Planes & 50% Ott Sale Hobby Capitol Dist 46 N Oak St Ventura Ca 93001 Ph-805-643-761 6 i1flO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor -3 -4s-35 4 304 6364 354 47-678 504 48-688 654 -49-69-7 -810-410-6 854needS -411-6118 Si 1-412-612-65150 2 Blade PusherAT YOUR DEALER 3 Blade Tractor 3 Blade Pusher etallic Aluminum 9-6 106 104 S150 Pusher106 5150 four flight controls can reversed reversing plugs inside transmitter Pro-line reports new servo underway PLS1 53 will work either positive negative pulse systems Water proof will have ballbearing output use Geisendnner pot Logictrol International Corp has FM set under development use new Sig netics IC encoder decoder chips producing XM servo large models using 24 ohm motor glassfilled nylon gears Output 6 pounds st.. Cannon Electronics delighted join Under $200 club model 825 system nicad system Ban tam Servos Tini transmitter.. Charlie K/C featuring Bantam Midget servo new IC servo-amp largest crowds show gathered around Eastcraft Specialty Prod ucts Inc watch Fred Eastman push button transmitter start engines boats planes using Lectra Start system.. Midwest Model Products importing Hirtenberger HP1 20 Tournament Champions sized models alternate-firing inline twin made up parts two 60 engines special interstructure contains carburetor valve mechanism 3 hp $350 George Meyers 70Fmehlich Farm Rd Hicksville NY 11801 Curtiss Coupe/Jessee continued page 28 laminating balsa stock together using spot cementing cut four outer pant parts two inner core parts Epoxy parts together using thin coats contacting surface pins insure alignment parts Clamp use weights until parts dry template GRISH LARGE WOOD PROPELLERS HARDWOOD. too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BORE ALL SIZES IN18 S7 6B&loPTcH 20B 22 10 24 13 NEW SIZE 8 PITCH 26 $16 RIGHT HAND TRACTOR 0 RUSH ST JOHN INDIANA 46373 pant mark axle hole location now dry rough paint build-up have Dremmel drill stand OK get someone has Drill -dia holes way through used some nylon bushings pant axle holes inside cemented balsa cap outside sanded smooth axle should extend through dia dowel drilled bushings use plywood washers centered over axle holes inside time fuselage tail should complete Attach wing fuselage set up cleared area work bench Slip tailwheel pants main wheels Use wheel collar inside pants lock temporarily Use block jack up rear portion pant off working surface position shown plans make cardboard jig using side profile lower wing surface top profile pant pant position established may need friendly extra hand move pant support wires inward close possible inside surface mark pant through wire eye four places locate attachment screw holes marks have added remove pants axles drill stand make four -dia holes approximately 3/8 deep Now transfer top outline shape pant onto rough pants Saw out profiles carve file sand finished shape Prepare four pieces 14 X hardwood dowel drilling 040/060 hole through four parts Slip-fit holes pants Mark around bottomed indicate cutoff line Match plugs holes Sand flush slightly below pant surface pants primed sanded finished holes will line up eyes pant retainers pants position hardwood plugs holes should 1/8 3/16 eye assembled screws will impart drawing function pulling pants inward pant sembled inserting axle through pant sidewall enough add shim washer plastic possible wheel outer shim finally retaining wheelcollar pants rotated until holes line up retaining screws added spring wires adjusted insure proper pant alignmentnot too high too low shown proper appearance Finish landing gear detail adding shock struts Wing Construction presents nothing new except jig method leading- trailingedge structure Start stack saw method preparing necessary ribs have access bandsaw one-at-a-time template method will Outline template sheet wing tip curve 1/64 ply parts Construct wing tip curve jig Foam-core very useful making quick jigs laminated ply sandwich tips take about hour total time assemble final shaping sanding blending finished panel top surface structure dry notching two jig pieces clear plywood dihedral reinforcement partsthe center section can jig built also Pin down outer panels allow dry center section being prepared T-square carpenters square draw line used align jig blocks jig blocks pine similar material lumber supply Drive small thin nails through short step notch building surface After jig blocks pinned down draw another line square across top blocks will used line up leading edge Assuming have parts ready pin leading edge trailing edge parts jig Slide ribs onto leading edge angle rotate until marked rib spacing correct Glue pin position Add triangle stock top sparout double rib located Add leading edge trailing edge sheeting cap strips drying time over notch out rib allow tip alignment extension added Use some small pieces jig block material 2 long re-jig wing small weights keep structure flat times Glue 5-mm epoxy up right left tip sub-assemblycurve top side now bottom curves added later dry slide tips plywood extensions leading edge trailing edge slots check cut fit position before gluing place tip place cut razor saw tip sheeting support strips cut cross grain will bend easily inside tip curve strips starting leading edge about 1/8 wide finish about 1/32 will allow proper taper tip 108 Model Aviation A Sizes pitches styles most
Edition: Model Aviation - 1979/06
Page Numbers: 22, 23, 106, 108
NO OCR TEXT NO OCR TEXT new_releases Bucker JUNGMEISTER 11/2 radio control 049 power$1&95don sruul great schoolyard scale TRAVEL AIR 020 power 36span wingspan SeaguIJP for rubber available soon C02 power SEE YOURsend 25* DEALER NOWcatalog FLYLINE MODELS INC 2020 OORRAVENUE RIO UOSIS7s4038 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new P30 class model designed novice mind has potential win toughest THE POTENT-30 Deluxe kit features include Rolled balsa fuselage wing mount dt Completed prop d nose plug tail plug & rudder Precut wing ribs spar notches lob rated balsa strips Highest quality tissue lubed contest rubber Detailed Inutructions flying tipn help minI CAT NO R2 $695 PP check money order CHAS WRLE 3620 MORSE AVE NOS SACTO CALIF 95821 Radio Technique/Myers continued page 23 frequency Section IC decoder crystal fifth-overtone type mighty thin shock mounted between pieces foam rubber Bob flies Formula feels shock mounting crystal important feature based flying ex perience found receiver technically interesting because features double balanced mixer cancels mixing products except desired intermediate frequency Novak Electronics produces flight packs using receiver Bantam Midget servos servos also teresting because feature 6a sec deadband temperature controlled over range O 1 500F Output 21 in/oz torque moving 900 just 27 seconds next item caught fancy MEN Automatic R/G System Charger shown Fig 4 idea can leave RC system connected device forever will recharge batteries drop back trickle charge necessary whole lot better charging though trickle charging nickle-cadmium batteries generally dis couraged battery manual have read fact verified way develop battery memory use trickle charger company consis tently repeated discharge cycle Lest think am denigrating device let repeat Its whole lot better recharging use device during flying season should get better service RC system just dont know trickle charging through winter season better full recharge once month Servos big news manufacturers either soon will have larger servos scale enthusiasts Royal Electronics al ready has Chevron servo well smaller cheaper would believe $2650 kit servo using Jomac racing car mechanicals Chevron servo-amplifier Kraft Systems Inc al ready has KPS- 16 servo soon will adding KPS- 19 its line will somewhat larger KPS- 16 will feature metal gears choice two operating speeds maximum output 160 in/oz torque Ace RIG Inc has big works will use new D&R mechanicals Several other manufac turers spoke having large servos soon Dunham D&R able provide necessary mechanical parts Bill Haga Bob Elliot Logictrol International Corp spoke new servo due out April will same size MM servo feature T1544 chip 24 ohm motor glass-filled nylon gears manufactured molybdenum disulfide toughen teeth control dimensional variations molding proc ess Bob Bill sure gear teeth will resist rounding better others currently market Fig 5 shows World Engines S-12 servo being custom-made pattern fliers intent design provide extremely durable servo reason uses drum-shaped potentio meter see photo two advan tages First drum puts much longer resistance track given diameter gives better wear-resistance better resolution hence accurate centering servo Secondly wipers arranged parallel potentiometer shaft gives better isolation vibration transmitted pot pushrod Reduced vibration means less wear will also notice servo uses three gears set first gear internal gear arrangement makes tighter system usual four-gear setup All-in-all impresses intelligent solution design problem making very durable servo $75 Finally least column see Fig 6 friend Don Clark Soaring Products displaying Thermic Sniff ler system sniffing out thermals RC sailplane consists tiny variometer 49MHz trans mitter mounted within sailplane walkie-talkie receiver mounted hip pocket operation system emits rising tone variometer senses rising air falling tone falling air important point system will permit license-free operation type-approved FCC As case rest systems frequencies used transmission shared other users notably lot model racing cars sold through Radio Shack past Christmas season about 100000 single-channel rudder-only airplanes being distributed Cox Hob bies Inc Time will tell whether will problem thing certain sailplane wont affected problem apologies good folks something sell show didnt get mentioned Lack mention indi cates shortage space criticism product Keep letters coming folks WRAMS SHOW NOTES Fox Twin now production basically pair 60-cc engines connected back-to-back puts out over 3 hp run 14500 rpm Structural parts really massive permitting use large props Duke says best way adjust twin carburetors work back-tofront low-to-high Simultaneous op posed firing makes very low vibration level operation . Royal Electronics Royal Classic transmitter has twin throttle trims Channels 4 & 8 can tied together electrically twin-engine operation Trim levers work low throttle position optimum idle adjustment switch transmitter allows selection full- half-linear control exponential control 106 Model Aviation 12 channel RIC free flight 51495 EXPERT BUILDERS WANTED Send us list accomplishments photos ol planes PIPER TRIPACER Ouarler Scale 89' wingspan 42 Sq H ot dtlailed plans$16 95 P P CURTIS HAWK P6E 60 wingspan 46 Sq Ft r delailed scale plans $1295 P P Send $1 00 tsr list builtap Planes & 50% Ott Sale Hobby Capitol Dist 46 N Oak St Ventura Ca 93001 Ph-805-643-761 6 i1flO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor -3 -4s-35 4 304 6364 354 47-678 504 48-688 654 -49-69-7 -810-410-6 854needS -411-6118 Si 1-412-612-65150 2 Blade PusherAT YOUR DEALER 3 Blade Tractor 3 Blade Pusher etallic Aluminum 9-6 106 104 S150 Pusher106 5150 four flight controls can reversed reversing plugs inside transmitter Pro-line reports new servo underway PLS1 53 will work either positive negative pulse systems Water proof will have ballbearing output use Geisendnner pot Logictrol International Corp has FM set under development use new Sig netics IC encoder decoder chips producing XM servo large models using 24 ohm motor glassfilled nylon gears Output 6 pounds st.. Cannon Electronics delighted join Under $200 club model 825 system nicad system Ban tam Servos Tini transmitter.. Charlie K/C featuring Bantam Midget servo new IC servo-amp largest crowds show gathered around Eastcraft Specialty Prod ucts Inc watch Fred Eastman push button transmitter start engines boats planes using Lectra Start system.. Midwest Model Products importing Hirtenberger HP1 20 Tournament Champions sized models alternate-firing inline twin made up parts two 60 engines special interstructure contains carburetor valve mechanism 3 hp $350 George Meyers 70Fmehlich Farm Rd Hicksville NY 11801 Curtiss Coupe/Jessee continued page 28 laminating balsa stock together using spot cementing cut four outer pant parts two inner core parts Epoxy parts together using thin coats contacting surface pins insure alignment parts Clamp use weights until parts dry template GRISH LARGE WOOD PROPELLERS HARDWOOD. too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BORE ALL SIZES IN18 S7 6B&loPTcH 20B 22 10 24 13 NEW SIZE 8 PITCH 26 $16 RIGHT HAND TRACTOR 0 RUSH ST JOHN INDIANA 46373 pant mark axle hole location now dry rough paint build-up have Dremmel drill stand OK get someone has Drill -dia holes way through used some nylon bushings pant axle holes inside cemented balsa cap outside sanded smooth axle should extend through dia dowel drilled bushings use plywood washers centered over axle holes inside time fuselage tail should complete Attach wing fuselage set up cleared area work bench Slip tailwheel pants main wheels Use wheel collar inside pants lock temporarily Use block jack up rear portion pant off working surface position shown plans make cardboard jig using side profile lower wing surface top profile pant pant position established may need friendly extra hand move pant support wires inward close possible inside surface mark pant through wire eye four places locate attachment screw holes marks have added remove pants axles drill stand make four -dia holes approximately 3/8 deep Now transfer top outline shape pant onto rough pants Saw out profiles carve file sand finished shape Prepare four pieces 14 X hardwood dowel drilling 040/060 hole through four parts Slip-fit holes pants Mark around bottomed indicate cutoff line Match plugs holes Sand flush slightly below pant surface pants primed sanded finished holes will line up eyes pant retainers pants position hardwood plugs holes should 1/8 3/16 eye assembled screws will impart drawing function pulling pants inward pant sembled inserting axle through pant sidewall enough add shim washer plastic possible wheel outer shim finally retaining wheelcollar pants rotated until holes line up retaining screws added spring wires adjusted insure proper pant alignmentnot too high too low shown proper appearance Finish landing gear detail adding shock struts Wing Construction presents nothing new except jig method leading- trailingedge structure Start stack saw method preparing necessary ribs have access bandsaw one-at-a-time template method will Outline template sheet wing tip curve 1/64 ply parts Construct wing tip curve jig Foam-core very useful making quick jigs laminated ply sandwich tips take about hour total time assemble final shaping sanding blending finished panel top surface structure dry notching two jig pieces clear plywood dihedral reinforcement partsthe center section can jig built also Pin down outer panels allow dry center section being prepared T-square carpenters square draw line used align jig blocks jig blocks pine similar material lumber supply Drive small thin nails through short step notch building surface After jig blocks pinned down draw another line square across top blocks will used line up leading edge Assuming have parts ready pin leading edge trailing edge parts jig Slide ribs onto leading edge angle rotate until marked rib spacing correct Glue pin position Add triangle stock top sparout double rib located Add leading edge trailing edge sheeting cap strips drying time over notch out rib allow tip alignment extension added Use some small pieces jig block material 2 long re-jig wing small weights keep structure flat times Glue 5-mm epoxy up right left tip sub-assemblycurve top side now bottom curves added later dry slide tips plywood extensions leading edge trailing edge slots check cut fit position before gluing place tip place cut razor saw tip sheeting support strips cut cross grain will bend easily inside tip curve strips starting leading edge about 1/8 wide finish about 1/32 will allow proper taper tip 108 Model Aviation A Sizes pitches styles most
Edition: Model Aviation - 1979/06
Page Numbers: 22, 23, 106, 108
NO OCR TEXT NO OCR TEXT new_releases Bucker JUNGMEISTER 11/2 radio control 049 power$1&95don sruul great schoolyard scale TRAVEL AIR 020 power 36span wingspan SeaguIJP for rubber available soon C02 power SEE YOURsend 25* DEALER NOWcatalog FLYLINE MODELS INC 2020 OORRAVENUE RIO UOSIS7s4038 ANNOUNCING Fast Steep Climb FLat Slow Glide 4 new P30 class model designed novice mind has potential win toughest THE POTENT-30 Deluxe kit features include Rolled balsa fuselage wing mount dt Completed prop d nose plug tail plug & rudder Precut wing ribs spar notches lob rated balsa strips Highest quality tissue lubed contest rubber Detailed Inutructions flying tipn help minI CAT NO R2 $695 PP check money order CHAS WRLE 3620 MORSE AVE NOS SACTO CALIF 95821 Radio Technique/Myers continued page 23 frequency Section IC decoder crystal fifth-overtone type mighty thin shock mounted between pieces foam rubber Bob flies Formula feels shock mounting crystal important feature based flying ex perience found receiver technically interesting because features double balanced mixer cancels mixing products except desired intermediate frequency Novak Electronics produces flight packs using receiver Bantam Midget servos servos also teresting because feature 6a sec deadband temperature controlled over range O 1 500F Output 21 in/oz torque moving 900 just 27 seconds next item caught fancy MEN Automatic R/G System Charger shown Fig 4 idea can leave RC system connected device forever will recharge batteries drop back trickle charge necessary whole lot better charging though trickle charging nickle-cadmium batteries generally dis couraged battery manual have read fact verified way develop battery memory use trickle charger company consis tently repeated discharge cycle Lest think am denigrating device let repeat Its whole lot better recharging use device during flying season should get better service RC system just dont know trickle charging through winter season better full recharge once month Servos big news manufacturers either soon will have larger servos scale enthusiasts Royal Electronics al ready has Chevron servo well smaller cheaper would believe $2650 kit servo using Jomac racing car mechanicals Chevron servo-amplifier Kraft Systems Inc al ready has KPS- 16 servo soon will adding KPS- 19 its line will somewhat larger KPS- 16 will feature metal gears choice two operating speeds maximum output 160 in/oz torque Ace RIG Inc has big works will use new D&R mechanicals Several other manufac turers spoke having large servos soon Dunham D&R able provide necessary mechanical parts Bill Haga Bob Elliot Logictrol International Corp spoke new servo due out April will same size MM servo feature T1544 chip 24 ohm motor glass-filled nylon gears manufactured molybdenum disulfide toughen teeth control dimensional variations molding proc ess Bob Bill sure gear teeth will resist rounding better others currently market Fig 5 shows World Engines S-12 servo being custom-made pattern fliers intent design provide extremely durable servo reason uses drum-shaped potentio meter see photo two advan tages First drum puts much longer resistance track given diameter gives better wear-resistance better resolution hence accurate centering servo Secondly wipers arranged parallel potentiometer shaft gives better isolation vibration transmitted pot pushrod Reduced vibration means less wear will also notice servo uses three gears set first gear internal gear arrangement makes tighter system usual four-gear setup All-in-all impresses intelligent solution design problem making very durable servo $75 Finally least column see Fig 6 friend Don Clark Soaring Products displaying Thermic Sniff ler system sniffing out thermals RC sailplane consists tiny variometer 49MHz trans mitter mounted within sailplane walkie-talkie receiver mounted hip pocket operation system emits rising tone variometer senses rising air falling tone falling air important point system will permit license-free operation type-approved FCC As case rest systems frequencies used transmission shared other users notably lot model racing cars sold through Radio Shack past Christmas season about 100000 single-channel rudder-only airplanes being distributed Cox Hob bies Inc Time will tell whether will problem thing certain sailplane wont affected problem apologies good folks something sell show didnt get mentioned Lack mention indi cates shortage space criticism product Keep letters coming folks WRAMS SHOW NOTES Fox Twin now production basically pair 60-cc engines connected back-to-back puts out over 3 hp run 14500 rpm Structural parts really massive permitting use large props Duke says best way adjust twin carburetors work back-tofront low-to-high Simultaneous op posed firing makes very low vibration level operation . Royal Electronics Royal Classic transmitter has twin throttle trims Channels 4 & 8 can tied together electrically twin-engine operation Trim levers work low throttle position optimum idle adjustment switch transmitter allows selection full- half-linear control exponential control 106 Model Aviation 12 channel RIC free flight 51495 EXPERT BUILDERS WANTED Send us list accomplishments photos ol planes PIPER TRIPACER Ouarler Scale 89' wingspan 42 Sq H ot dtlailed plans$16 95 P P CURTIS HAWK P6E 60 wingspan 46 Sq Ft r delailed scale plans $1295 P P Send $1 00 tsr list builtap Planes & 50% Ott Sale Hobby Capitol Dist 46 N Oak St Ventura Ca 93001 Ph-805-643-761 6 i1flO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor -3 -4s-35 4 304 6364 354 47-678 504 48-688 654 -49-69-7 -810-410-6 854needS -411-6118 Si 1-412-612-65150 2 Blade PusherAT YOUR DEALER 3 Blade Tractor 3 Blade Pusher etallic Aluminum 9-6 106 104 S150 Pusher106 5150 four flight controls can reversed reversing plugs inside transmitter Pro-line reports new servo underway PLS1 53 will work either positive negative pulse systems Water proof will have ballbearing output use Geisendnner pot Logictrol International Corp has FM set under development use new Sig netics IC encoder decoder chips producing XM servo large models using 24 ohm motor glassfilled nylon gears Output 6 pounds st.. Cannon Electronics delighted join Under $200 club model 825 system nicad system Ban tam Servos Tini transmitter.. Charlie K/C featuring Bantam Midget servo new IC servo-amp largest crowds show gathered around Eastcraft Specialty Prod ucts Inc watch Fred Eastman push button transmitter start engines boats planes using Lectra Start system.. Midwest Model Products importing Hirtenberger HP1 20 Tournament Champions sized models alternate-firing inline twin made up parts two 60 engines special interstructure contains carburetor valve mechanism 3 hp $350 George Meyers 70Fmehlich Farm Rd Hicksville NY 11801 Curtiss Coupe/Jessee continued page 28 laminating balsa stock together using spot cementing cut four outer pant parts two inner core parts Epoxy parts together using thin coats contacting surface pins insure alignment parts Clamp use weights until parts dry template GRISH LARGE WOOD PROPELLERS HARDWOOD. too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BORE ALL SIZES IN18 S7 6B&loPTcH 20B 22 10 24 13 NEW SIZE 8 PITCH 26 $16 RIGHT HAND TRACTOR 0 RUSH ST JOHN INDIANA 46373 pant mark axle hole location now dry rough paint build-up have Dremmel drill stand OK get someone has Drill -dia holes way through used some nylon bushings pant axle holes inside cemented balsa cap outside sanded smooth axle should extend through dia dowel drilled bushings use plywood washers centered over axle holes inside time fuselage tail should complete Attach wing fuselage set up cleared area work bench Slip tailwheel pants main wheels Use wheel collar inside pants lock temporarily Use block jack up rear portion pant off working surface position shown plans make cardboard jig using side profile lower wing surface top profile pant pant position established may need friendly extra hand move pant support wires inward close possible inside surface mark pant through wire eye four places locate attachment screw holes marks have added remove pants axles drill stand make four -dia holes approximately 3/8 deep Now transfer top outline shape pant onto rough pants Saw out profiles carve file sand finished shape Prepare four pieces 14 X hardwood dowel drilling 040/060 hole through four parts Slip-fit holes pants Mark around bottomed indicate cutoff line Match plugs holes Sand flush slightly below pant surface pants primed sanded finished holes will line up eyes pant retainers pants position hardwood plugs holes should 1/8 3/16 eye assembled screws will impart drawing function pulling pants inward pant sembled inserting axle through pant sidewall enough add shim washer plastic possible wheel outer shim finally retaining wheelcollar pants rotated until holes line up retaining screws added spring wires adjusted insure proper pant alignmentnot too high too low shown proper appearance Finish landing gear detail adding shock struts Wing Construction presents nothing new except jig method leading- trailingedge structure Start stack saw method preparing necessary ribs have access bandsaw one-at-a-time template method will Outline template sheet wing tip curve 1/64 ply parts Construct wing tip curve jig Foam-core very useful making quick jigs laminated ply sandwich tips take about hour total time assemble final shaping sanding blending finished panel top surface structure dry notching two jig pieces clear plywood dihedral reinforcement partsthe center section can jig built also Pin down outer panels allow dry center section being prepared T-square carpenters square draw line used align jig blocks jig blocks pine similar material lumber supply Drive small thin nails through short step notch building surface After jig blocks pinned down draw another line square across top blocks will used line up leading edge Assuming have parts ready pin leading edge trailing edge parts jig Slide ribs onto leading edge angle rotate until marked rib spacing correct Glue pin position Add triangle stock top sparout double rib located Add leading edge trailing edge sheeting cap strips drying time over notch out rib allow tip alignment extension added Use some small pieces jig block material 2 long re-jig wing small weights keep structure flat times Glue 5-mm epoxy up right left tip sub-assemblycurve top side now bottom curves added later dry slide tips plywood extensions leading edge trailing edge slots check cut fit position before gluing place tip place cut razor saw tip sheeting support strips cut cross grain will bend easily inside tip curve strips starting leading edge about 1/8 wide finish about 1/32 will allow proper taper tip 108 Model Aviation A Sizes pitches styles most