Control Line Combat Charlie Johnson HOW COME now have looked through World Championship results discovered USA Combat team didnt blow everyone away Since winner least two reasons other 41 contestants eliminated since full double-elimination contest spectators attended Cham pionships obvious some contestants just plain lousy used really substandard equipment Some pilots apparently treated Combat fly ing hobby WC level subjected early retirement main reason people lost matches included Americans over-eager took too big cut US fliers background Fast Combat seemed get better tried get over hurry wasnt pain fully obvious Team Trials Na tionals because contestants flying styles fairly similar other words just because someone does well against other Americans Team Trials doesnt mean theyll particularly well World Championships Fast Combat sort aggressiveness seemed hinder rather enhance picture Hakan Ostmans model good example style model use Europe has very light wing loading ample power USE 15 engine low-nitro fuel does spectacular wig gles fakes Its true razzle-dazzle disappears during match compared test flying ability odd maneuvers upsets fliers used following rather tradi tional maneuvers seemed have focused tech nology aspect event have gotten about application part fastest model world isnt good its advantage speed isnt used its fullest potential Americans very powerful Nelson engines would have able pull away almost other competitor wanted what wanted get tight-turning battles equaled outclassed several occasions Howard Rush did go strength model match hed taken whole streamer hide almost entire four minutes flew upwind opponents model barely would flymuch less maneuverand did get close Howard would blaze across top momentary safety other side Any number models flew well enough have won Championships ex tra edge model design wasnt latest technology design could withstand occasional mid-air ground impact Germans some awful-looking foam models used preliminary contest rather small modest horsepower produced CTM engine survived impacts both other models ground Perhaps fly ing fortress model may make its return flying large open-structure models like Ostmans susceptible dis Continued page 172 Hakan Qatman flew very-European-looking model L recent CL World Championships Craft has USE 15 engine fiber glass prop fiberglass pacifier pod wooden belicrank ultra-low wing loading Construction simple might think pushrod-end fitting R cheap simple adjustable pushrod piece aluminum knitting needle set screw holding fitting place also control-horn pivot pin Note reinforcing around control horn sewn hinges epoxied place 70 Model Aviation Rear view latest Nelson 15 glow Very useful tool made Henry Nelson engine instead fuel line going direct use pull off thrust washer slip ly needle valve goes special assembly over end crankshaft fuel block its metered Fuel hook flange over drive washer goes through black hose directly Jet ioosen big bolt Hes also got spurts rear drum slide-hammer gizmo pulling shaft valve Alien-head bolt visible just next position lilts shoved back crash fuel hose attachment point Far superior banging engine rock engine-retaining safety cable RC Reference II Read YearRound wont gather dust R/C bookshelf youll Keep too busy workbench lap Because new Radio Control Buyers Guide 8th Edition design ed used year round planning projects locating hardto-find products getting ahad hobby Guide master reference work R/C product formation 8th edition features over 2500 RC Aircraft Cars Boats related products including hundreds new pro ducts recently released Toledo other major R/C shows highly descriptive information illustrated thousands photographs new double-listing format easier-than-ever use Newcomers will find Guide mind-jogging excursion seemingly endless possibilities R/C world wildest machines its devotees Models shown commercially available Get new Radio Control Buyers Guide 8th Edition Its R/C reference book youll read abling midair damage too compact models mass center often survived first midair able stay up knock out opponents spare model tactics styles ap plicable Fast Combat sure would help Slow always wondered matches could won using defensive tactics John Jo used sort tactic win match Nationals let opponents weakness defeat himself may scoff fake-and-wiggle business because havent seen done properly final results tell story interesting suggestions US Team Trials given Paul Smith suggested having trials Bahamas No has home-field ad vantage weather nice its actu ally cheaper get package deal fly down week get flight mainland city Just think wives would push hus bands try out team got vacation down Might start building some models Hmmmm Most time before during WC spent fiddling new Nel son rear-intakes Howard Rush using absolutely best engine Ive come across far trouble-free performance dependability con cerned best setup AAC version aluminum piston chromed aluminum liner rear intake avoid dirt impact button-insert head button inserts started life GlowBee AA plugs Theyre held head threaded collar very similar Supertigre X-40 Only element plug actually combustion chain ber performance gain almost thousand rpm over conventional head screw-in plug did destroy whole pocketful expensive little devils $250 before discovered cause problem wasnt 4OtVo nitro oil Howard wanted use soybean oil 10% soybean oil 2% lubricin because wasnt getting enough mileage mixed up some 40% nitro us ing Tom Flukers ingredients used Ucon oil problem went away real cause low mileage fuel leaking around needle wrapped some teflon tape around needle before screwing body sealed things up just fine Mileage increased less ounce per minute plugs fine though still used 40% nitro Ucon lubricant As fliers use potent engines everyone should reminded wont run very fast unless theyre mount ed securely friends dog engine sud denly found another 3000 rpm mounted Howards model uses extremely rigid motor mount assembly thats made up carbon fibre wood picture Nelson shows mounting point safety cable attaches fuel block attachment point should engine rather motor mount bolts since its usual ly bolts come loose engine flies off use noose method its good idea put tubing over wire wraps around engine keep wearing case damaging case motor comes out plane saw engine WC damaged cable others gouges case USE 15 reported last col umn wide use Champion ships appeared well-built produced adequate horsepowerbut much Nelson weigh about 125 grams lighter 160-gram Nelson well cheaper least Holland warned hold off buying because theyd some trou ble piston engines saw run good performers choice having engine would Nelson AAC rear-induction also some new Grish props looked like old Tornado 7-4that used stretch hubs bunch given out samples users 172 Model Aviation See Hobby Dealer dealer send $695 pIus $200 postage handling 4 & ASSOCIATES INC CLJFTON VA fl4 CL CombatlJohnson Continued page 70 eported thai worked better aipan although well carbon ibre props Theyre now available buck can afford give away ittle bit performance later iow work out Charlie Johflson 3716 Ingraham St Diego CA 92109 CL Navy CarrierlPerry Continued page 71 lights around country total 41 lass I/TI 59 Profile flights ecorded contests occurred uring summer months Only lights timing data avail ble used Flights ranked Light score landing scale points ot considered high speed times y low speed times form some statisti al data might allow us se stack up against Carrier mod lers rest United States ercentile rankings should interpreted s follows 90 percentile flight score igh/low speed time would better 0 percent flights used nalysis 67 percentile score better two thirds flights etc look differences percentile inkings shows general Class II tips outperform Class models Consid ring number combined events areas modeler faced choice f building either Class Class II iodel might ahead build Class II iodel first also ran correlations between high iw speeds between overall score oth high low speeds using rank-dif rence method Scale classes little correlation between ranking based nly low speed ranking based high speed indicates tradeIfs between high low-speed perfor iance common may also indicate lange design philosophy larger iodels appearing trading high speed tter low speed large propor older models still use high/low correlation Profile uch higher probably reflection fact Profile models have ways larger couldnt grow ie same extent Scale ships could ay also indicate modelers willing vote time good low-speed perfor ance also working improve high ieed scores classes high-speed ranking cor lated very well overall flight score nking best match iddle lower scores other words great high speed didnt guarantee high ierall score worse high speed came lower overall placing cely become high speed score gan dominate total flight score look top 12% overall ores showed quite different relation tip case low speed also Tailwheel Assemblies Now three sizes4 te9 lbs$1295 spring steellOts 18 lbs$1495 tailwheelsI9lhsmsdnp$1595 OhIo l2lo Also within top 12% groupings flight score ranking low speed ranking either identi cal varied no place message seems cleara very good low speed will almost guarantee very good flight score range low speed scores constituted top 12% grouping 108 160 seconds Class I/Il 143 227 seconds Profile Richard L Perry 7578 Vogels Way Springfield VA 22153 SundancerlNunes Continued page 74 elevator function properly tached fuselage Fuselage Note small triangles plan indicate actual outline profile fuselage Mark cut fuselage sheet x 3 x 36 balsa medium grade Make sure no cracks splits etc balsa Mark wing slot area fuselage blank Drill A-in hole end slot area Connect tops bottoms holes front back line cut balsa slot being careful keep cutting blade right angle fuselage side Similarly mark remove wood sta bilizer slot Mark remove wood rear top fuselage area make /6-in-deep recess slot ihat will receive fin Try make slot wider needed ensure good parts fit Cut out plywood fuselage doublers Locate holes outside face doublers Use awl make indenta tions inside face doubler mating balsa fuselage area Epoxy 216-223-1950 SORRY correct telephone number 6 FIBERGLASS MASTER 0 7O3 89O-6O17 0 Pleats make change page 82 mber issue Model Aviation elsewhere. JanUary1985 173 MONOCOUPE D14SPIPER PA17 Engines 2 Cycle Glow 90-12VAGABOND 4 Cycle Glow 90 -12Wingspan 84 Flying Weight 12 lbsWing Area 1280 sq Wing Design Foam Wing Design Fuseisge Built-upFoam CweslBslsa Sheeted Cowl F-gleesCowl Fiberglass Spsn 94Flying Weight 10 lbs wISi Engine Engines 2 Cycle 60 91 4 Cycle 90-120 25% Scale Size Henry Neighs N SUPER STAR Wingspan 84 Wing Area 1135 sq Cowl Fiberglass Canopy Formed Plastic Flying Weight 11 14 lbs Wing Design Foam Balsa Covered Fuselage Built-up Semi Monocouque Design Balsa Engines Large Glow Small Gas Manufacturers PustThreads3rues Inserts 440 6/32 8/32 1/420 FsstTuWlqShetlngSsSO$1995 Ve50 $595 OHIO SUPERSTAR PRODUCTS Inc 11376 Ridgeway Rd. Kensington OH 44427 LDHOODS Cereal ILD BLUE box Airplanes Fly AgaIn Scoot CH $500 Reproduction P40 ZERO SAF-CLITE MooELe Box 62M 5seiIle Ml45Oee PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 SILICONE gasoline 10 foot coilsTUBING 10.062 092 125U S POST S/coil 235 265 325 545/COIL LARRY DODGE AERO INC 10210 MANNINGSTILLWATER MN 55082 * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS w BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MCKENZIE HWY $300VIDA OREGON 97488
Edition: Model Aviation - 1985/01
Page Numbers: 70, 172, 173
Control Line Combat Charlie Johnson HOW COME now have looked through World Championship results discovered USA Combat team didnt blow everyone away Since winner least two reasons other 41 contestants eliminated since full double-elimination contest spectators attended Cham pionships obvious some contestants just plain lousy used really substandard equipment Some pilots apparently treated Combat fly ing hobby WC level subjected early retirement main reason people lost matches included Americans over-eager took too big cut US fliers background Fast Combat seemed get better tried get over hurry wasnt pain fully obvious Team Trials Na tionals because contestants flying styles fairly similar other words just because someone does well against other Americans Team Trials doesnt mean theyll particularly well World Championships Fast Combat sort aggressiveness seemed hinder rather enhance picture Hakan Ostmans model good example style model use Europe has very light wing loading ample power USE 15 engine low-nitro fuel does spectacular wig gles fakes Its true razzle-dazzle disappears during match compared test flying ability odd maneuvers upsets fliers used following rather tradi tional maneuvers seemed have focused tech nology aspect event have gotten about application part fastest model world isnt good its advantage speed isnt used its fullest potential Americans very powerful Nelson engines would have able pull away almost other competitor wanted what wanted get tight-turning battles equaled outclassed several occasions Howard Rush did go strength model match hed taken whole streamer hide almost entire four minutes flew upwind opponents model barely would flymuch less maneuverand did get close Howard would blaze across top momentary safety other side Any number models flew well enough have won Championships ex tra edge model design wasnt latest technology design could withstand occasional mid-air ground impact Germans some awful-looking foam models used preliminary contest rather small modest horsepower produced CTM engine survived impacts both other models ground Perhaps fly ing fortress model may make its return flying large open-structure models like Ostmans susceptible dis Continued page 172 Hakan Qatman flew very-European-looking model L recent CL World Championships Craft has USE 15 engine fiber glass prop fiberglass pacifier pod wooden belicrank ultra-low wing loading Construction simple might think pushrod-end fitting R cheap simple adjustable pushrod piece aluminum knitting needle set screw holding fitting place also control-horn pivot pin Note reinforcing around control horn sewn hinges epoxied place 70 Model Aviation Rear view latest Nelson 15 glow Very useful tool made Henry Nelson engine instead fuel line going direct use pull off thrust washer slip ly needle valve goes special assembly over end crankshaft fuel block its metered Fuel hook flange over drive washer goes through black hose directly Jet ioosen big bolt Hes also got spurts rear drum slide-hammer gizmo pulling shaft valve Alien-head bolt visible just next position lilts shoved back crash fuel hose attachment point Far superior banging engine rock engine-retaining safety cable RC Reference II Read YearRound wont gather dust R/C bookshelf youll Keep too busy workbench lap Because new Radio Control Buyers Guide 8th Edition design ed used year round planning projects locating hardto-find products getting ahad hobby Guide master reference work R/C product formation 8th edition features over 2500 RC Aircraft Cars Boats related products including hundreds new pro ducts recently released Toledo other major R/C shows highly descriptive information illustrated thousands photographs new double-listing format easier-than-ever use Newcomers will find Guide mind-jogging excursion seemingly endless possibilities R/C world wildest machines its devotees Models shown commercially available Get new Radio Control Buyers Guide 8th Edition Its R/C reference book youll read abling midair damage too compact models mass center often survived first midair able stay up knock out opponents spare model tactics styles ap plicable Fast Combat sure would help Slow always wondered matches could won using defensive tactics John Jo used sort tactic win match Nationals let opponents weakness defeat himself may scoff fake-and-wiggle business because havent seen done properly final results tell story interesting suggestions US Team Trials given Paul Smith suggested having trials Bahamas No has home-field ad vantage weather nice its actu ally cheaper get package deal fly down week get flight mainland city Just think wives would push hus bands try out team got vacation down Might start building some models Hmmmm Most time before during WC spent fiddling new Nel son rear-intakes Howard Rush using absolutely best engine Ive come across far trouble-free performance dependability con cerned best setup AAC version aluminum piston chromed aluminum liner rear intake avoid dirt impact button-insert head button inserts started life GlowBee AA plugs Theyre held head threaded collar very similar Supertigre X-40 Only element plug actually combustion chain ber performance gain almost thousand rpm over conventional head screw-in plug did destroy whole pocketful expensive little devils $250 before discovered cause problem wasnt 4OtVo nitro oil Howard wanted use soybean oil 10% soybean oil 2% lubricin because wasnt getting enough mileage mixed up some 40% nitro us ing Tom Flukers ingredients used Ucon oil problem went away real cause low mileage fuel leaking around needle wrapped some teflon tape around needle before screwing body sealed things up just fine Mileage increased less ounce per minute plugs fine though still used 40% nitro Ucon lubricant As fliers use potent engines everyone should reminded wont run very fast unless theyre mount ed securely friends dog engine sud denly found another 3000 rpm mounted Howards model uses extremely rigid motor mount assembly thats made up carbon fibre wood picture Nelson shows mounting point safety cable attaches fuel block attachment point should engine rather motor mount bolts since its usual ly bolts come loose engine flies off use noose method its good idea put tubing over wire wraps around engine keep wearing case damaging case motor comes out plane saw engine WC damaged cable others gouges case USE 15 reported last col umn wide use Champion ships appeared well-built produced adequate horsepowerbut much Nelson weigh about 125 grams lighter 160-gram Nelson well cheaper least Holland warned hold off buying because theyd some trou ble piston engines saw run good performers choice having engine would Nelson AAC rear-induction also some new Grish props looked like old Tornado 7-4that used stretch hubs bunch given out samples users 172 Model Aviation See Hobby Dealer dealer send $695 pIus $200 postage handling 4 & ASSOCIATES INC CLJFTON VA fl4 CL CombatlJohnson Continued page 70 eported thai worked better aipan although well carbon ibre props Theyre now available buck can afford give away ittle bit performance later iow work out Charlie Johflson 3716 Ingraham St Diego CA 92109 CL Navy CarrierlPerry Continued page 71 lights around country total 41 lass I/TI 59 Profile flights ecorded contests occurred uring summer months Only lights timing data avail ble used Flights ranked Light score landing scale points ot considered high speed times y low speed times form some statisti al data might allow us se stack up against Carrier mod lers rest United States ercentile rankings should interpreted s follows 90 percentile flight score igh/low speed time would better 0 percent flights used nalysis 67 percentile score better two thirds flights etc look differences percentile inkings shows general Class II tips outperform Class models Consid ring number combined events areas modeler faced choice f building either Class Class II iodel might ahead build Class II iodel first also ran correlations between high iw speeds between overall score oth high low speeds using rank-dif rence method Scale classes little correlation between ranking based nly low speed ranking based high speed indicates tradeIfs between high low-speed perfor iance common may also indicate lange design philosophy larger iodels appearing trading high speed tter low speed large propor older models still use high/low correlation Profile uch higher probably reflection fact Profile models have ways larger couldnt grow ie same extent Scale ships could ay also indicate modelers willing vote time good low-speed perfor ance also working improve high ieed scores classes high-speed ranking cor lated very well overall flight score nking best match iddle lower scores other words great high speed didnt guarantee high ierall score worse high speed came lower overall placing cely become high speed score gan dominate total flight score look top 12% overall ores showed quite different relation tip case low speed also Tailwheel Assemblies Now three sizes4 te9 lbs$1295 spring steellOts 18 lbs$1495 tailwheelsI9lhsmsdnp$1595 OhIo l2lo Also within top 12% groupings flight score ranking low speed ranking either identi cal varied no place message seems cleara very good low speed will almost guarantee very good flight score range low speed scores constituted top 12% grouping 108 160 seconds Class I/Il 143 227 seconds Profile Richard L Perry 7578 Vogels Way Springfield VA 22153 SundancerlNunes Continued page 74 elevator function properly tached fuselage Fuselage Note small triangles plan indicate actual outline profile fuselage Mark cut fuselage sheet x 3 x 36 balsa medium grade Make sure no cracks splits etc balsa Mark wing slot area fuselage blank Drill A-in hole end slot area Connect tops bottoms holes front back line cut balsa slot being careful keep cutting blade right angle fuselage side Similarly mark remove wood sta bilizer slot Mark remove wood rear top fuselage area make /6-in-deep recess slot ihat will receive fin Try make slot wider needed ensure good parts fit Cut out plywood fuselage doublers Locate holes outside face doublers Use awl make indenta tions inside face doubler mating balsa fuselage area Epoxy 216-223-1950 SORRY correct telephone number 6 FIBERGLASS MASTER 0 7O3 89O-6O17 0 Pleats make change page 82 mber issue Model Aviation elsewhere. JanUary1985 173 MONOCOUPE D14SPIPER PA17 Engines 2 Cycle Glow 90-12VAGABOND 4 Cycle Glow 90 -12Wingspan 84 Flying Weight 12 lbsWing Area 1280 sq Wing Design Foam Wing Design Fuseisge Built-upFoam CweslBslsa Sheeted Cowl F-gleesCowl Fiberglass Spsn 94Flying Weight 10 lbs wISi Engine Engines 2 Cycle 60 91 4 Cycle 90-120 25% Scale Size Henry Neighs N SUPER STAR Wingspan 84 Wing Area 1135 sq Cowl Fiberglass Canopy Formed Plastic Flying Weight 11 14 lbs Wing Design Foam Balsa Covered Fuselage Built-up Semi Monocouque Design Balsa Engines Large Glow Small Gas Manufacturers PustThreads3rues Inserts 440 6/32 8/32 1/420 FsstTuWlqShetlngSsSO$1995 Ve50 $595 OHIO SUPERSTAR PRODUCTS Inc 11376 Ridgeway Rd. Kensington OH 44427 LDHOODS Cereal ILD BLUE box Airplanes Fly AgaIn Scoot CH $500 Reproduction P40 ZERO SAF-CLITE MooELe Box 62M 5seiIle Ml45Oee PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 SILICONE gasoline 10 foot coilsTUBING 10.062 092 125U S POST S/coil 235 265 325 545/COIL LARRY DODGE AERO INC 10210 MANNINGSTILLWATER MN 55082 * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS w BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MCKENZIE HWY $300VIDA OREGON 97488
Edition: Model Aviation - 1985/01
Page Numbers: 70, 172, 173
Control Line Combat Charlie Johnson HOW COME now have looked through World Championship results discovered USA Combat team didnt blow everyone away Since winner least two reasons other 41 contestants eliminated since full double-elimination contest spectators attended Cham pionships obvious some contestants just plain lousy used really substandard equipment Some pilots apparently treated Combat fly ing hobby WC level subjected early retirement main reason people lost matches included Americans over-eager took too big cut US fliers background Fast Combat seemed get better tried get over hurry wasnt pain fully obvious Team Trials Na tionals because contestants flying styles fairly similar other words just because someone does well against other Americans Team Trials doesnt mean theyll particularly well World Championships Fast Combat sort aggressiveness seemed hinder rather enhance picture Hakan Ostmans model good example style model use Europe has very light wing loading ample power USE 15 engine low-nitro fuel does spectacular wig gles fakes Its true razzle-dazzle disappears during match compared test flying ability odd maneuvers upsets fliers used following rather tradi tional maneuvers seemed have focused tech nology aspect event have gotten about application part fastest model world isnt good its advantage speed isnt used its fullest potential Americans very powerful Nelson engines would have able pull away almost other competitor wanted what wanted get tight-turning battles equaled outclassed several occasions Howard Rush did go strength model match hed taken whole streamer hide almost entire four minutes flew upwind opponents model barely would flymuch less maneuverand did get close Howard would blaze across top momentary safety other side Any number models flew well enough have won Championships ex tra edge model design wasnt latest technology design could withstand occasional mid-air ground impact Germans some awful-looking foam models used preliminary contest rather small modest horsepower produced CTM engine survived impacts both other models ground Perhaps fly ing fortress model may make its return flying large open-structure models like Ostmans susceptible dis Continued page 172 Hakan Qatman flew very-European-looking model L recent CL World Championships Craft has USE 15 engine fiber glass prop fiberglass pacifier pod wooden belicrank ultra-low wing loading Construction simple might think pushrod-end fitting R cheap simple adjustable pushrod piece aluminum knitting needle set screw holding fitting place also control-horn pivot pin Note reinforcing around control horn sewn hinges epoxied place 70 Model Aviation Rear view latest Nelson 15 glow Very useful tool made Henry Nelson engine instead fuel line going direct use pull off thrust washer slip ly needle valve goes special assembly over end crankshaft fuel block its metered Fuel hook flange over drive washer goes through black hose directly Jet ioosen big bolt Hes also got spurts rear drum slide-hammer gizmo pulling shaft valve Alien-head bolt visible just next position lilts shoved back crash fuel hose attachment point Far superior banging engine rock engine-retaining safety cable RC Reference II Read YearRound wont gather dust R/C bookshelf youll Keep too busy workbench lap Because new Radio Control Buyers Guide 8th Edition design ed used year round planning projects locating hardto-find products getting ahad hobby Guide master reference work R/C product formation 8th edition features over 2500 RC Aircraft Cars Boats related products including hundreds new pro ducts recently released Toledo other major R/C shows highly descriptive information illustrated thousands photographs new double-listing format easier-than-ever use Newcomers will find Guide mind-jogging excursion seemingly endless possibilities R/C world wildest machines its devotees Models shown commercially available Get new Radio Control Buyers Guide 8th Edition Its R/C reference book youll read abling midair damage too compact models mass center often survived first midair able stay up knock out opponents spare model tactics styles ap plicable Fast Combat sure would help Slow always wondered matches could won using defensive tactics John Jo used sort tactic win match Nationals let opponents weakness defeat himself may scoff fake-and-wiggle business because havent seen done properly final results tell story interesting suggestions US Team Trials given Paul Smith suggested having trials Bahamas No has home-field ad vantage weather nice its actu ally cheaper get package deal fly down week get flight mainland city Just think wives would push hus bands try out team got vacation down Might start building some models Hmmmm Most time before during WC spent fiddling new Nel son rear-intakes Howard Rush using absolutely best engine Ive come across far trouble-free performance dependability con cerned best setup AAC version aluminum piston chromed aluminum liner rear intake avoid dirt impact button-insert head button inserts started life GlowBee AA plugs Theyre held head threaded collar very similar Supertigre X-40 Only element plug actually combustion chain ber performance gain almost thousand rpm over conventional head screw-in plug did destroy whole pocketful expensive little devils $250 before discovered cause problem wasnt 4OtVo nitro oil Howard wanted use soybean oil 10% soybean oil 2% lubricin because wasnt getting enough mileage mixed up some 40% nitro us ing Tom Flukers ingredients used Ucon oil problem went away real cause low mileage fuel leaking around needle wrapped some teflon tape around needle before screwing body sealed things up just fine Mileage increased less ounce per minute plugs fine though still used 40% nitro Ucon lubricant As fliers use potent engines everyone should reminded wont run very fast unless theyre mount ed securely friends dog engine sud denly found another 3000 rpm mounted Howards model uses extremely rigid motor mount assembly thats made up carbon fibre wood picture Nelson shows mounting point safety cable attaches fuel block attachment point should engine rather motor mount bolts since its usual ly bolts come loose engine flies off use noose method its good idea put tubing over wire wraps around engine keep wearing case damaging case motor comes out plane saw engine WC damaged cable others gouges case USE 15 reported last col umn wide use Champion ships appeared well-built produced adequate horsepowerbut much Nelson weigh about 125 grams lighter 160-gram Nelson well cheaper least Holland warned hold off buying because theyd some trou ble piston engines saw run good performers choice having engine would Nelson AAC rear-induction also some new Grish props looked like old Tornado 7-4that used stretch hubs bunch given out samples users 172 Model Aviation See Hobby Dealer dealer send $695 pIus $200 postage handling 4 & ASSOCIATES INC CLJFTON VA fl4 CL CombatlJohnson Continued page 70 eported thai worked better aipan although well carbon ibre props Theyre now available buck can afford give away ittle bit performance later iow work out Charlie Johflson 3716 Ingraham St Diego CA 92109 CL Navy CarrierlPerry Continued page 71 lights around country total 41 lass I/TI 59 Profile flights ecorded contests occurred uring summer months Only lights timing data avail ble used Flights ranked Light score landing scale points ot considered high speed times y low speed times form some statisti al data might allow us se stack up against Carrier mod lers rest United States ercentile rankings should interpreted s follows 90 percentile flight score igh/low speed time would better 0 percent flights used nalysis 67 percentile score better two thirds flights etc look differences percentile inkings shows general Class II tips outperform Class models Consid ring number combined events areas modeler faced choice f building either Class Class II iodel might ahead build Class II iodel first also ran correlations between high iw speeds between overall score oth high low speeds using rank-dif rence method Scale classes little correlation between ranking based nly low speed ranking based high speed indicates tradeIfs between high low-speed perfor iance common may also indicate lange design philosophy larger iodels appearing trading high speed tter low speed large propor older models still use high/low correlation Profile uch higher probably reflection fact Profile models have ways larger couldnt grow ie same extent Scale ships could ay also indicate modelers willing vote time good low-speed perfor ance also working improve high ieed scores classes high-speed ranking cor lated very well overall flight score nking best match iddle lower scores other words great high speed didnt guarantee high ierall score worse high speed came lower overall placing cely become high speed score gan dominate total flight score look top 12% overall ores showed quite different relation tip case low speed also Tailwheel Assemblies Now three sizes4 te9 lbs$1295 spring steellOts 18 lbs$1495 tailwheelsI9lhsmsdnp$1595 OhIo l2lo Also within top 12% groupings flight score ranking low speed ranking either identi cal varied no place message seems cleara very good low speed will almost guarantee very good flight score range low speed scores constituted top 12% grouping 108 160 seconds Class I/Il 143 227 seconds Profile Richard L Perry 7578 Vogels Way Springfield VA 22153 SundancerlNunes Continued page 74 elevator function properly tached fuselage Fuselage Note small triangles plan indicate actual outline profile fuselage Mark cut fuselage sheet x 3 x 36 balsa medium grade Make sure no cracks splits etc balsa Mark wing slot area fuselage blank Drill A-in hole end slot area Connect tops bottoms holes front back line cut balsa slot being careful keep cutting blade right angle fuselage side Similarly mark remove wood sta bilizer slot Mark remove wood rear top fuselage area make /6-in-deep recess slot ihat will receive fin Try make slot wider needed ensure good parts fit Cut out plywood fuselage doublers Locate holes outside face doublers Use awl make indenta tions inside face doubler mating balsa fuselage area Epoxy 216-223-1950 SORRY correct telephone number 6 FIBERGLASS MASTER 0 7O3 89O-6O17 0 Pleats make change page 82 mber issue Model Aviation elsewhere. JanUary1985 173 MONOCOUPE D14SPIPER PA17 Engines 2 Cycle Glow 90-12VAGABOND 4 Cycle Glow 90 -12Wingspan 84 Flying Weight 12 lbsWing Area 1280 sq Wing Design Foam Wing Design Fuseisge Built-upFoam CweslBslsa Sheeted Cowl F-gleesCowl Fiberglass Spsn 94Flying Weight 10 lbs wISi Engine Engines 2 Cycle 60 91 4 Cycle 90-120 25% Scale Size Henry Neighs N SUPER STAR Wingspan 84 Wing Area 1135 sq Cowl Fiberglass Canopy Formed Plastic Flying Weight 11 14 lbs Wing Design Foam Balsa Covered Fuselage Built-up Semi Monocouque Design Balsa Engines Large Glow Small Gas Manufacturers PustThreads3rues Inserts 440 6/32 8/32 1/420 FsstTuWlqShetlngSsSO$1995 Ve50 $595 OHIO SUPERSTAR PRODUCTS Inc 11376 Ridgeway Rd. Kensington OH 44427 LDHOODS Cereal ILD BLUE box Airplanes Fly AgaIn Scoot CH $500 Reproduction P40 ZERO SAF-CLITE MooELe Box 62M 5seiIle Ml45Oee PAW DIESELS Englands Finest 049 to 35 New low low prices Send $100 list Eric Clutton 913 Cedar Lane Tullahoma Tenn 37388 SILICONE gasoline 10 foot coilsTUBING 10.062 092 125U S POST S/coil 235 265 325 545/COIL LARRY DODGE AERO INC 10210 MANNINGSTILLWATER MN 55082 * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS w BOOKS EPLA-TECH 1985 INTERNATIONAL AIRPLANE CATALOG48500 MCKENZIE HWY $300VIDA OREGON 97488