Pylon Racing THIS MONTHS article will de voted et Racing intent Midget provioe inexpensive form Pylon Racing serious rac ing competitor could afford mula 1 beginning probably true pilots planes equipment became sophisticated price racing increased past two years have seen considerable crease cost associated gets primarily engine acces sory departments big controversy going time whether limit price engine $6000 obviously eliminates Rossi 15 dominates races allowed Different sections country natu rally have varied opinions about limi tation et writer believes availability Rossi time split et two categories similar Formula 1 could called Sportsman Unlimited Standard Expert whatever would give people want super fast engines opportunity compete level know next objection super engine safety factor Well guess look Formula 1 use safety regulations course layout 1975 Nats ets flown same area Formula 1 competition no problems aircraft getting too close pits crowd Better 50% entries using Rossi Well enough philos ophy lets talk about get started et Racing guess first decision make what type racer want use several kits available field seem competitive really boils down likes dislikes Some kits easier build others some wood some foam fiber glass take pick Jack Stafford Models coming out Brown B-3 vintage 1936 sport plane 15 power just happens fit Midget rules extremely easy airplane fly average modeler has built RC models couple years should have trouble con struction Dave Lane Hal deBolt offering limited number 100 French Caudron racer has scaled down FAI racer model uses Hals power-pod design fuselage has foam wing price limited edition will $4250 Keep mind build worldbeater keep light Two one-half pounds minimum weight speedsters come out over three pounds forget Remember have 15 churning up front takes awhile get three pounds moving dont like what market can dream up own design long has raced someplace its career full scale ship way want go re member300 sq wing area 1 thick root k measured outside fuselage wing fillets constant taper tip See Fig 1 fuselage must 2 wide point 5 deep cockpit must two wheels steerable skid tricycle landing gear nose wheel steerable Minimum wheel diameter main gear 1 No brakes allowed Tie-breaking 1/4 Midget fly-off 4th 5th 75 Nats between Gail Jacobsonmodel foregroundand Greg Doe Doe won nose Keep fuselage clean cowl en gine Use least 1 spinner Any thing smaller will fit over prob hub Remember have stuff some radio gear little beast leave some room inside work think trou ble et lack space radio forced use newer smaller radios want make plane competitive Another problem older radios too heavy Now have discouraged com pletely et what use power Well can choose several engines currently market sell less $6000 time knows much will cost next year reason dont think $6000 limit will work popular engines west coast Supertigre K&B no longer available Taipan OS Enya order Taipan seems competi tive engine Supertigre K&B Cox coming out new 15 $5995 continued page 85 FUSELAGE SIDE June1976 19 17/8 TFIG 1 improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz Please send complete catalog Enclosed $100 refunded first order Add $ 50 1st class mail return Name Address BOX 511 E HIGGINSVILLE MO 64037city State Zip RC Pylon/Lane continued page 19 rules state engine must stock use muffler carburetor must designed specific engine leaves glow plug play legally After install engine take care setting idle plane must stand rest idling help caller Usually means idle must below 4000 rpm other stickler engine must running until plane lands wheels touch runway plane quits flying cannot get away high-speed touch bounce land next coun ty get points landing engine running land dead stick lose point heat Some CDs will state contest flier will idle check before during after race prepared advantage idle rule keeps guys reasonably honest far engine concerned Unfortunately Rossi goes like h--- idles too Another rule makes conversa tion fact propeller must stock can sand blade back side balance manufacturers trade mark size must readable front blade Sneaky huh Top Flite 7-SN racing prop works well K&Bs Supertigres Rossi likes 7-5 Rev-up racing prop Some guys also have good luck 7-6 7-5 wide blade Top Flite props thing experiment until find works best Mufflers other bug-a-boo have master have good luck Du-Bro muffler uses series plates spaced washers secret use plates muf flers have about least amount drag light use rear exhaust port engine good luck other alterna tive race mufflers required has much criticism between NMPRA Y4 Midget fraternity over past year Now George Zink has brave enough step ward take job representing et group within NMPRA should see some improvement relations hope out Midget land will support George Zink have problems sugges tions sure contact him let him know views way can further great sport Pylon Racing received following set proposed Pylon rules Bob Aberle Haup pauge NY has touch PROPS Pylon Racers Puget Sound Bob supporting rules uniform standard country Any comments guys out land might have concerning rules would appreciated Pylon Racing Rules I General AMA FCC regulations covering flier aircraft equipment shall applicable event Simultaneous hand launch shall made participants race contestants partic ular race will given 2 mm start engines Anyone started after 2-mis time period automatically disqualified race No pylon call ers shall used No racing shall done individually against clock No ROGs will required twocut zero rule left discretion host club contest director 2 Engine Speciftcaeiona maximum engine dis placement shall 051 cu engine parts shall production units produced quantities greater 500 available through normal retail outlets United States 3 Weight weight less fuel including equip ment necessary flight shall less 20 ounces nor greater 32 ounces 4 Fuaelage No fuselage cross section area minimum will stipulated previous 85 sq minimum cross sectional area now deleted will give greater prospect originality design Average size small RC system basically dictates reasonable fuselage cross section need further limi tations Wheels no longer required Hand launch ing greatly simplifies running races No longer need smooth take-off surface Also /2As easily upset landings simply because existence landing gear 5 Wing Minimum area 200 sq including area displaced fuselage minimum thickness June 1976 85 MORE wA9TiOir-flid jaster o same powerYELLOWN B de Go ~erePROPELL 2 304 Blade63 64354 Pusher74 76 75 504 Sieach84 86 88654 94 9-6 97 qg 63 64 354 i04 106 85 \e\ -8-6854114 116 ltB1 9-6106i RC 124 3 Blade Tractort2 5 126 150 55-3 54 6-3 6-4504GRISH 3 BladePusher SR OS 63ST JOHN INDIANA 46373 RC Pylon continued airfoil root chord will 7/8 ratio thickness chord root must maintained tip section well slight variation PROPS rules will allow taper-wing planform have proportionately thinner airfoil section tips Calling fixed 7/s-in thick airfoil section mini mum right tips will produce awkward wing section might tend keep constantchord wing sensible planform would minimize choice wing designs essentially eliminates hope originality wing may have planform example constant chord tapered leading edge tapered trailing edge swept hack hut no delta wings flying wings will permitted Fidelity scale racing planes required Neither rac ATTENTION NATIONALS CONTESTANTS Fly FOX products 1976 Nationals win CASH AWARD addition trophy $200 cash 1st place events Combat r Open CL Stunt r Open RC Pattern s D RC Quarter Midget $100 cash 1st place other event Requirements win using Fox engine fuel plug Procedure -- Between 5 PM arid tO PM bring winning modet trophy motel will take pictures get advertising reteases signed hand check Fox introducing several new products may wish try partial tist Fox 36 Rear Exhaust mproved version motor won Profite carrier 1976 Avaitable Ball Bearing & Bushing versions FOX combat Speciat ticatty improved over 6975 modet power-smoother runningmore durable Insert available Slow combat Fox l5BB lable several variations competition modet features i crank shaft structure race over 30000 RPM FOX MANUFACTURING CO 5305 Towson / Ft Smith AR 72901 ing canopies pilot heads wheel pants landing gears matter 6 Engine Cia-Off Provision must made some type positive engine cut-off can simply wire squeeze off fuel line full elevator control possibly Tatone Fuel Shut-Off Valve attached control surface extreme Rigid fuel pick-up tubes side tanks require plane held verted fuel exhausted expressly bidden rule necessary safe flying popular spectator sport such being able kill engine immediately can real hazard 7 Race Courae Use three pylon course shown following 80aiX START/FINISH LINE X #a 100230 Bob Aberle continues think about covers might add com ments strictly own representative club Unfortunately local Long Island Pylon Racing has practically non-existent lack enthusiasm primarily due lack single uniform set racing rules n US other problems directly related Up now kit manufacturers have held off production pylon racers because potential losses might incurred final rules end up significantly different present racing designs thing publish design magazine just think cost involved tool up production run new kits Once rules finally put bed entirely possible big kit manufacturers ARFs semi ARFs will get act offering cheap yet practical i/2A pylon racers would just start never know may still see day again new 049 en gine will hit market name other Cox Keep plugging lets put together 76 address 4477 136th Hawthorne CA 90250 THREE PYLON RACE COURSE CL Aerobatics/Paul continued page 27 cannot break out 4 People overruns engine failures etc first round will discriminated against having fly Group finals 5 best flier will win anyway make things complicated As stated earlier seems good deal fair judge novice beginner fliers same time comparison like abilities can used Also chance method flight order allows someone gets lucky draw wind just right put up good flight sit back others have fight wind later round opposite can happen wind being up start round dying down end 20 flights selective grouping seeding groups similar ability will have somewhat similar atmospheric conditions method seeding tried 1975 Nationals England according PAMPA correspondent Glen Alison worked out quite well three groups fliers second third round flights England uses FAI scoring three official flights Al Rabes original proposal directed toward seeding Nationals best five seven fliers taken off qualifying circle Briefly idea three qualifying circles six quali fiers circle number six qualifiers flew first finals followed number five qualifiers circle number four men etc suggested number qualifiers circle would draw positions within group proposal kept same flying order second round finals What writer has proposed slight modification Als basic proposal fitted local contest Nationals competition writer feels draw should used first round finals seeding method should used second round However writer strongly desires change Nationals format winner determined best two three official flights Picking National Champion flight chancy entirely fair expecially using blind draw since have national champions deter mined early late draws ideal bad wind conditions about trying method deter mining flight order summer contest will used Mid-America Championships Lexington KY Instruc tion sheets showing utilize seeding method well PAMPA classes competition will mailed out CDs contests AMA calendar well being sent anyone writes author 1640 Maywick Drive Lexington KY 40504 86 Model Aviation 8-68-B 125 X49-610-6 10-4 iSO 33LADE10 6 Pusher MlaIIic Alenwaum Color150
Edition: Model Aviation - 1976/06
Page Numbers: 19, 85, 86
Pylon Racing THIS MONTHS article will de voted et Racing intent Midget provioe inexpensive form Pylon Racing serious rac ing competitor could afford mula 1 beginning probably true pilots planes equipment became sophisticated price racing increased past two years have seen considerable crease cost associated gets primarily engine acces sory departments big controversy going time whether limit price engine $6000 obviously eliminates Rossi 15 dominates races allowed Different sections country natu rally have varied opinions about limi tation et writer believes availability Rossi time split et two categories similar Formula 1 could called Sportsman Unlimited Standard Expert whatever would give people want super fast engines opportunity compete level know next objection super engine safety factor Well guess look Formula 1 use safety regulations course layout 1975 Nats ets flown same area Formula 1 competition no problems aircraft getting too close pits crowd Better 50% entries using Rossi Well enough philos ophy lets talk about get started et Racing guess first decision make what type racer want use several kits available field seem competitive really boils down likes dislikes Some kits easier build others some wood some foam fiber glass take pick Jack Stafford Models coming out Brown B-3 vintage 1936 sport plane 15 power just happens fit Midget rules extremely easy airplane fly average modeler has built RC models couple years should have trouble con struction Dave Lane Hal deBolt offering limited number 100 French Caudron racer has scaled down FAI racer model uses Hals power-pod design fuselage has foam wing price limited edition will $4250 Keep mind build worldbeater keep light Two one-half pounds minimum weight speedsters come out over three pounds forget Remember have 15 churning up front takes awhile get three pounds moving dont like what market can dream up own design long has raced someplace its career full scale ship way want go re member300 sq wing area 1 thick root k measured outside fuselage wing fillets constant taper tip See Fig 1 fuselage must 2 wide point 5 deep cockpit must two wheels steerable skid tricycle landing gear nose wheel steerable Minimum wheel diameter main gear 1 No brakes allowed Tie-breaking 1/4 Midget fly-off 4th 5th 75 Nats between Gail Jacobsonmodel foregroundand Greg Doe Doe won nose Keep fuselage clean cowl en gine Use least 1 spinner Any thing smaller will fit over prob hub Remember have stuff some radio gear little beast leave some room inside work think trou ble et lack space radio forced use newer smaller radios want make plane competitive Another problem older radios too heavy Now have discouraged com pletely et what use power Well can choose several engines currently market sell less $6000 time knows much will cost next year reason dont think $6000 limit will work popular engines west coast Supertigre K&B no longer available Taipan OS Enya order Taipan seems competi tive engine Supertigre K&B Cox coming out new 15 $5995 continued page 85 FUSELAGE SIDE June1976 19 17/8 TFIG 1 improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz Please send complete catalog Enclosed $100 refunded first order Add $ 50 1st class mail return Name Address BOX 511 E HIGGINSVILLE MO 64037city State Zip RC Pylon/Lane continued page 19 rules state engine must stock use muffler carburetor must designed specific engine leaves glow plug play legally After install engine take care setting idle plane must stand rest idling help caller Usually means idle must below 4000 rpm other stickler engine must running until plane lands wheels touch runway plane quits flying cannot get away high-speed touch bounce land next coun ty get points landing engine running land dead stick lose point heat Some CDs will state contest flier will idle check before during after race prepared advantage idle rule keeps guys reasonably honest far engine concerned Unfortunately Rossi goes like h--- idles too Another rule makes conversa tion fact propeller must stock can sand blade back side balance manufacturers trade mark size must readable front blade Sneaky huh Top Flite 7-SN racing prop works well K&Bs Supertigres Rossi likes 7-5 Rev-up racing prop Some guys also have good luck 7-6 7-5 wide blade Top Flite props thing experiment until find works best Mufflers other bug-a-boo have master have good luck Du-Bro muffler uses series plates spaced washers secret use plates muf flers have about least amount drag light use rear exhaust port engine good luck other alterna tive race mufflers required has much criticism between NMPRA Y4 Midget fraternity over past year Now George Zink has brave enough step ward take job representing et group within NMPRA should see some improvement relations hope out Midget land will support George Zink have problems sugges tions sure contact him let him know views way can further great sport Pylon Racing received following set proposed Pylon rules Bob Aberle Haup pauge NY has touch PROPS Pylon Racers Puget Sound Bob supporting rules uniform standard country Any comments guys out land might have concerning rules would appreciated Pylon Racing Rules I General AMA FCC regulations covering flier aircraft equipment shall applicable event Simultaneous hand launch shall made participants race contestants partic ular race will given 2 mm start engines Anyone started after 2-mis time period automatically disqualified race No pylon call ers shall used No racing shall done individually against clock No ROGs will required twocut zero rule left discretion host club contest director 2 Engine Speciftcaeiona maximum engine dis placement shall 051 cu engine parts shall production units produced quantities greater 500 available through normal retail outlets United States 3 Weight weight less fuel including equip ment necessary flight shall less 20 ounces nor greater 32 ounces 4 Fuaelage No fuselage cross section area minimum will stipulated previous 85 sq minimum cross sectional area now deleted will give greater prospect originality design Average size small RC system basically dictates reasonable fuselage cross section need further limi tations Wheels no longer required Hand launch ing greatly simplifies running races No longer need smooth take-off surface Also /2As easily upset landings simply because existence landing gear 5 Wing Minimum area 200 sq including area displaced fuselage minimum thickness June 1976 85 MORE wA9TiOir-flid jaster o same powerYELLOWN B de Go ~erePROPELL 2 304 Blade63 64354 Pusher74 76 75 504 Sieach84 86 88654 94 9-6 97 qg 63 64 354 i04 106 85 \e\ -8-6854114 116 ltB1 9-6106i RC 124 3 Blade Tractort2 5 126 150 55-3 54 6-3 6-4504GRISH 3 BladePusher SR OS 63ST JOHN INDIANA 46373 RC Pylon continued airfoil root chord will 7/8 ratio thickness chord root must maintained tip section well slight variation PROPS rules will allow taper-wing planform have proportionately thinner airfoil section tips Calling fixed 7/s-in thick airfoil section mini mum right tips will produce awkward wing section might tend keep constantchord wing sensible planform would minimize choice wing designs essentially eliminates hope originality wing may have planform example constant chord tapered leading edge tapered trailing edge swept hack hut no delta wings flying wings will permitted Fidelity scale racing planes required Neither rac ATTENTION NATIONALS CONTESTANTS Fly FOX products 1976 Nationals win CASH AWARD addition trophy $200 cash 1st place events Combat r Open CL Stunt r Open RC Pattern s D RC Quarter Midget $100 cash 1st place other event Requirements win using Fox engine fuel plug Procedure -- Between 5 PM arid tO PM bring winning modet trophy motel will take pictures get advertising reteases signed hand check Fox introducing several new products may wish try partial tist Fox 36 Rear Exhaust mproved version motor won Profite carrier 1976 Avaitable Ball Bearing & Bushing versions FOX combat Speciat ticatty improved over 6975 modet power-smoother runningmore durable Insert available Slow combat Fox l5BB lable several variations competition modet features i crank shaft structure race over 30000 RPM FOX MANUFACTURING CO 5305 Towson / Ft Smith AR 72901 ing canopies pilot heads wheel pants landing gears matter 6 Engine Cia-Off Provision must made some type positive engine cut-off can simply wire squeeze off fuel line full elevator control possibly Tatone Fuel Shut-Off Valve attached control surface extreme Rigid fuel pick-up tubes side tanks require plane held verted fuel exhausted expressly bidden rule necessary safe flying popular spectator sport such being able kill engine immediately can real hazard 7 Race Courae Use three pylon course shown following 80aiX START/FINISH LINE X #a 100230 Bob Aberle continues think about covers might add com ments strictly own representative club Unfortunately local Long Island Pylon Racing has practically non-existent lack enthusiasm primarily due lack single uniform set racing rules n US other problems directly related Up now kit manufacturers have held off production pylon racers because potential losses might incurred final rules end up significantly different present racing designs thing publish design magazine just think cost involved tool up production run new kits Once rules finally put bed entirely possible big kit manufacturers ARFs semi ARFs will get act offering cheap yet practical i/2A pylon racers would just start never know may still see day again new 049 en gine will hit market name other Cox Keep plugging lets put together 76 address 4477 136th Hawthorne CA 90250 THREE PYLON RACE COURSE CL Aerobatics/Paul continued page 27 cannot break out 4 People overruns engine failures etc first round will discriminated against having fly Group finals 5 best flier will win anyway make things complicated As stated earlier seems good deal fair judge novice beginner fliers same time comparison like abilities can used Also chance method flight order allows someone gets lucky draw wind just right put up good flight sit back others have fight wind later round opposite can happen wind being up start round dying down end 20 flights selective grouping seeding groups similar ability will have somewhat similar atmospheric conditions method seeding tried 1975 Nationals England according PAMPA correspondent Glen Alison worked out quite well three groups fliers second third round flights England uses FAI scoring three official flights Al Rabes original proposal directed toward seeding Nationals best five seven fliers taken off qualifying circle Briefly idea three qualifying circles six quali fiers circle number six qualifiers flew first finals followed number five qualifiers circle number four men etc suggested number qualifiers circle would draw positions within group proposal kept same flying order second round finals What writer has proposed slight modification Als basic proposal fitted local contest Nationals competition writer feels draw should used first round finals seeding method should used second round However writer strongly desires change Nationals format winner determined best two three official flights Picking National Champion flight chancy entirely fair expecially using blind draw since have national champions deter mined early late draws ideal bad wind conditions about trying method deter mining flight order summer contest will used Mid-America Championships Lexington KY Instruc tion sheets showing utilize seeding method well PAMPA classes competition will mailed out CDs contests AMA calendar well being sent anyone writes author 1640 Maywick Drive Lexington KY 40504 86 Model Aviation 8-68-B 125 X49-610-6 10-4 iSO 33LADE10 6 Pusher MlaIIic Alenwaum Color150
Edition: Model Aviation - 1976/06
Page Numbers: 19, 85, 86
Pylon Racing THIS MONTHS article will de voted et Racing intent Midget provioe inexpensive form Pylon Racing serious rac ing competitor could afford mula 1 beginning probably true pilots planes equipment became sophisticated price racing increased past two years have seen considerable crease cost associated gets primarily engine acces sory departments big controversy going time whether limit price engine $6000 obviously eliminates Rossi 15 dominates races allowed Different sections country natu rally have varied opinions about limi tation et writer believes availability Rossi time split et two categories similar Formula 1 could called Sportsman Unlimited Standard Expert whatever would give people want super fast engines opportunity compete level know next objection super engine safety factor Well guess look Formula 1 use safety regulations course layout 1975 Nats ets flown same area Formula 1 competition no problems aircraft getting too close pits crowd Better 50% entries using Rossi Well enough philos ophy lets talk about get started et Racing guess first decision make what type racer want use several kits available field seem competitive really boils down likes dislikes Some kits easier build others some wood some foam fiber glass take pick Jack Stafford Models coming out Brown B-3 vintage 1936 sport plane 15 power just happens fit Midget rules extremely easy airplane fly average modeler has built RC models couple years should have trouble con struction Dave Lane Hal deBolt offering limited number 100 French Caudron racer has scaled down FAI racer model uses Hals power-pod design fuselage has foam wing price limited edition will $4250 Keep mind build worldbeater keep light Two one-half pounds minimum weight speedsters come out over three pounds forget Remember have 15 churning up front takes awhile get three pounds moving dont like what market can dream up own design long has raced someplace its career full scale ship way want go re member300 sq wing area 1 thick root k measured outside fuselage wing fillets constant taper tip See Fig 1 fuselage must 2 wide point 5 deep cockpit must two wheels steerable skid tricycle landing gear nose wheel steerable Minimum wheel diameter main gear 1 No brakes allowed Tie-breaking 1/4 Midget fly-off 4th 5th 75 Nats between Gail Jacobsonmodel foregroundand Greg Doe Doe won nose Keep fuselage clean cowl en gine Use least 1 spinner Any thing smaller will fit over prob hub Remember have stuff some radio gear little beast leave some room inside work think trou ble et lack space radio forced use newer smaller radios want make plane competitive Another problem older radios too heavy Now have discouraged com pletely et what use power Well can choose several engines currently market sell less $6000 time knows much will cost next year reason dont think $6000 limit will work popular engines west coast Supertigre K&B no longer available Taipan OS Enya order Taipan seems competi tive engine Supertigre K&B Cox coming out new 15 $5995 continued page 85 FUSELAGE SIDE June1976 19 17/8 TFIG 1 improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz Please send complete catalog Enclosed $100 refunded first order Add $ 50 1st class mail return Name Address BOX 511 E HIGGINSVILLE MO 64037city State Zip RC Pylon/Lane continued page 19 rules state engine must stock use muffler carburetor must designed specific engine leaves glow plug play legally After install engine take care setting idle plane must stand rest idling help caller Usually means idle must below 4000 rpm other stickler engine must running until plane lands wheels touch runway plane quits flying cannot get away high-speed touch bounce land next coun ty get points landing engine running land dead stick lose point heat Some CDs will state contest flier will idle check before during after race prepared advantage idle rule keeps guys reasonably honest far engine concerned Unfortunately Rossi goes like h--- idles too Another rule makes conversa tion fact propeller must stock can sand blade back side balance manufacturers trade mark size must readable front blade Sneaky huh Top Flite 7-SN racing prop works well K&Bs Supertigres Rossi likes 7-5 Rev-up racing prop Some guys also have good luck 7-6 7-5 wide blade Top Flite props thing experiment until find works best Mufflers other bug-a-boo have master have good luck Du-Bro muffler uses series plates spaced washers secret use plates muf flers have about least amount drag light use rear exhaust port engine good luck other alterna tive race mufflers required has much criticism between NMPRA Y4 Midget fraternity over past year Now George Zink has brave enough step ward take job representing et group within NMPRA should see some improvement relations hope out Midget land will support George Zink have problems sugges tions sure contact him let him know views way can further great sport Pylon Racing received following set proposed Pylon rules Bob Aberle Haup pauge NY has touch PROPS Pylon Racers Puget Sound Bob supporting rules uniform standard country Any comments guys out land might have concerning rules would appreciated Pylon Racing Rules I General AMA FCC regulations covering flier aircraft equipment shall applicable event Simultaneous hand launch shall made participants race contestants partic ular race will given 2 mm start engines Anyone started after 2-mis time period automatically disqualified race No pylon call ers shall used No racing shall done individually against clock No ROGs will required twocut zero rule left discretion host club contest director 2 Engine Speciftcaeiona maximum engine dis placement shall 051 cu engine parts shall production units produced quantities greater 500 available through normal retail outlets United States 3 Weight weight less fuel including equip ment necessary flight shall less 20 ounces nor greater 32 ounces 4 Fuaelage No fuselage cross section area minimum will stipulated previous 85 sq minimum cross sectional area now deleted will give greater prospect originality design Average size small RC system basically dictates reasonable fuselage cross section need further limi tations Wheels no longer required Hand launch ing greatly simplifies running races No longer need smooth take-off surface Also /2As easily upset landings simply because existence landing gear 5 Wing Minimum area 200 sq including area displaced fuselage minimum thickness June 1976 85 MORE wA9TiOir-flid jaster o same powerYELLOWN B de Go ~erePROPELL 2 304 Blade63 64354 Pusher74 76 75 504 Sieach84 86 88654 94 9-6 97 qg 63 64 354 i04 106 85 \e\ -8-6854114 116 ltB1 9-6106i RC 124 3 Blade Tractort2 5 126 150 55-3 54 6-3 6-4504GRISH 3 BladePusher SR OS 63ST JOHN INDIANA 46373 RC Pylon continued airfoil root chord will 7/8 ratio thickness chord root must maintained tip section well slight variation PROPS rules will allow taper-wing planform have proportionately thinner airfoil section tips Calling fixed 7/s-in thick airfoil section mini mum right tips will produce awkward wing section might tend keep constantchord wing sensible planform would minimize choice wing designs essentially eliminates hope originality wing may have planform example constant chord tapered leading edge tapered trailing edge swept hack hut no delta wings flying wings will permitted Fidelity scale racing planes required Neither rac ATTENTION NATIONALS CONTESTANTS Fly FOX products 1976 Nationals win CASH AWARD addition trophy $200 cash 1st place events Combat r Open CL Stunt r Open RC Pattern s D RC Quarter Midget $100 cash 1st place other event Requirements win using Fox engine fuel plug Procedure -- Between 5 PM arid tO PM bring winning modet trophy motel will take pictures get advertising reteases signed hand check Fox introducing several new products may wish try partial tist Fox 36 Rear Exhaust mproved version motor won Profite carrier 1976 Avaitable Ball Bearing & Bushing versions FOX combat Speciat ticatty improved over 6975 modet power-smoother runningmore durable Insert available Slow combat Fox l5BB lable several variations competition modet features i crank shaft structure race over 30000 RPM FOX MANUFACTURING CO 5305 Towson / Ft Smith AR 72901 ing canopies pilot heads wheel pants landing gears matter 6 Engine Cia-Off Provision must made some type positive engine cut-off can simply wire squeeze off fuel line full elevator control possibly Tatone Fuel Shut-Off Valve attached control surface extreme Rigid fuel pick-up tubes side tanks require plane held verted fuel exhausted expressly bidden rule necessary safe flying popular spectator sport such being able kill engine immediately can real hazard 7 Race Courae Use three pylon course shown following 80aiX START/FINISH LINE X #a 100230 Bob Aberle continues think about covers might add com ments strictly own representative club Unfortunately local Long Island Pylon Racing has practically non-existent lack enthusiasm primarily due lack single uniform set racing rules n US other problems directly related Up now kit manufacturers have held off production pylon racers because potential losses might incurred final rules end up significantly different present racing designs thing publish design magazine just think cost involved tool up production run new kits Once rules finally put bed entirely possible big kit manufacturers ARFs semi ARFs will get act offering cheap yet practical i/2A pylon racers would just start never know may still see day again new 049 en gine will hit market name other Cox Keep plugging lets put together 76 address 4477 136th Hawthorne CA 90250 THREE PYLON RACE COURSE CL Aerobatics/Paul continued page 27 cannot break out 4 People overruns engine failures etc first round will discriminated against having fly Group finals 5 best flier will win anyway make things complicated As stated earlier seems good deal fair judge novice beginner fliers same time comparison like abilities can used Also chance method flight order allows someone gets lucky draw wind just right put up good flight sit back others have fight wind later round opposite can happen wind being up start round dying down end 20 flights selective grouping seeding groups similar ability will have somewhat similar atmospheric conditions method seeding tried 1975 Nationals England according PAMPA correspondent Glen Alison worked out quite well three groups fliers second third round flights England uses FAI scoring three official flights Al Rabes original proposal directed toward seeding Nationals best five seven fliers taken off qualifying circle Briefly idea three qualifying circles six quali fiers circle number six qualifiers flew first finals followed number five qualifiers circle number four men etc suggested number qualifiers circle would draw positions within group proposal kept same flying order second round finals What writer has proposed slight modification Als basic proposal fitted local contest Nationals competition writer feels draw should used first round finals seeding method should used second round However writer strongly desires change Nationals format winner determined best two three official flights Picking National Champion flight chancy entirely fair expecially using blind draw since have national champions deter mined early late draws ideal bad wind conditions about trying method deter mining flight order summer contest will used Mid-America Championships Lexington KY Instruc tion sheets showing utilize seeding method well PAMPA classes competition will mailed out CDs contests AMA calendar well being sent anyone writes author 1640 Maywick Drive Lexington KY 40504 86 Model Aviation 8-68-B 125 X49-610-6 10-4 iSO 33LADE10 6 Pusher MlaIIic Alenwaum Color150