Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation
Edition: Model Aviation - 1978/03
Page Numbers: 48, 49, 50, 102, 103, 104
Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation
Edition: Model Aviation - 1978/03
Page Numbers: 48, 49, 50, 102, 103, 104
Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation
Edition: Model Aviation - 1978/03
Page Numbers: 48, 49, 50, 102, 103, 104
Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation
Edition: Model Aviation - 1978/03
Page Numbers: 48, 49, 50, 102, 103, 104
Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation
Edition: Model Aviation - 1978/03
Page Numbers: 48, 49, 50, 102, 103, 104
Duralion 0 Bob Meuser BUCK 650 Early 1977 13-year-old Joey Foster set three National Records using Buck 500 addition captur ing trophies both Northern Southern California meets June 650 version completed Within first few months its life won event entered both Class Class B Gas including Nats Joe Foster Joeys father designed model has flown just about sort model Among numerous other glories Wakefield World Cham pion early fifties still chucks hand-launch glider about well anyone Joe currently holds third oldest offi cial AMA National Record flew tiny indoor Baby ROG Stick model 21 mm 52 sec 1962 once active RC Pylon Racing what Joe has say about Buck 650 Wing construction similar used GYSOB design find rigid must glides well fuselage constructed flat board building up side si milar way Satellites made wing double covered Plyspan Superlite tissue Everything else singlecovered Nitrate dope used course ship flies right-right right wing washed /8-in polyhedral joint keep right wing up under pow er All-up weight 26 oz I3LECI 650 Dtsigned utj Joe Foster built bij Joey Fo5ter 1977 NATS h5 I St St 2__________ 4123 / 2 2514 1L3 Aas Jr Bas Jr 2 fllzi7 7O 25 L tia j Pt C VI 650 evolved two previous designs both used longer tail moment arms higher aspect ratios smaller wing area both flew well times difficult keep adjusted little wild side might say new design seems right size K&B 325cc Class 35cc engine Class B climb very fast making ideal 5-second engine run Category II after fourth max Using engines able get nearly 25000 rpm burning 60%-nitro fuel swinging 8/3 K&W fiber glass prop autorudder elevator along fuel shut-off actuated Seelig timer recently completed 850 version Dad could have some fun too powered new K&B 65cc front rotary So far three three competition 38 mm Thunderbugs Annual 43 mm Fresno Annual K&B real powerhouse feel 650 could adjusted fly auto-rudder auto-elevator using some down- right-thrust Jocys model 1/32-in differ ence between power glide settings elevator hardly worth extra gadgetry Tom Koster Bill Gieskieng stayed Tom Koster current FAI Power World Champion around time World Champs following comments ex tracted letter Bill spent three weeks Tom around time World Champs things hectic wasnt time pick ing brains too Tom addicted ear-drum-shattering music 48 Model Aviation Ron Young Cox employee seems happy about sheeted-wing FAI model better fliers can justify bit loving-care decorations workshop sign lan guage small talk really impressed Toms ships superb craftsman very fast worker bounces around workshop like circus performer suddenly intricate part given birth did confess part took long long time makethe beautifully milled aluminum half-pan has reported Tom used carbon fiber pan cant recall seeing Some pans black outside may have given impression carbon fiber Tom rather tight fix getting ready World Champs supply airplanes pretty low asked Bill Tom given up flapped wings no question using flapper WC since flapper destroyed Wiener Neustat Speed Cream Suki-Suki old Square Cream ready fall apart Speed Cream Tom won essentially identical Square Cream drawings have pre viously published except airfoil section fast 6% flat-bottom airfoil Speed Cream rather untried quan tity like test-bed flap per design Suki-Suki like flapper flaps down Test flying prior WC easy time year Danes hold no contests weather troublesome crops everywhere test fly sometimes go France time stunned first saw Speed Cream go up wanted go home burn models initial acceleration fantastic Turning around 27500 rpm ground speed must increase 30000 split second after launch Tom feels getting started fast very important certainly has demonstrated effectiveness doing After test flight Speed Cream few days before World Champs discovered small disk stab rest come off minor miracle stab barely catching model probably would have destroyed During test flights Suki-Suki banged up too much quick repairs day Champs pre dawn test flight Speed Cream lost fortunately found time official flying Tom course maxed out again model lost just prior fly-offs Out came venerable Square Cream test flight splatters Speed Cream found just barely time fly-offs Tom wins World Championship Tom made seem easy actuality treading ra zors edge Tom will back next World Champs flappers will first build up sizeable fleet conventional models local contests backup World Champs thinks sheet-aluminum covering used Rus sians might just thing stiffening wing flapper big thing Toms mind past year has de velopment electronic timer March1978 49 tflougflttul 5111 vanderbeek prepares back-up A-i last flight Nats after losing best Tadpole Missed first second World Power champion Thomas Koster Denmark might giving Karate yell projects word ithis streamlined sheeted FF space engine really winding up interview text brings out Koster take-charge competitor Ian Kaynes photo unmodified Peck-Polymers kit Larry Jordan won recent meet sponsored 99%-R/C San Francisco Vultures Timed 45 seconds indoornot bad Bob Meuser photograph blow him have use clockwork timer WC amount work Tom has poured electronic timer incredible should give pause talk blithely about building Toms props unusual lays up two props time steel epoxy mold using fiberglass 720 epoxy clamps thing together cures oven blades very thin6% outer halfand flutter noisily during static run ning thought blades would thrown off moment instant model launched flutter apparently disap pears Tom made some carbon fiber props WC quite rigid sounded clean during static running impression model did reach high speed later part climb carbon props Bill sent some notes measurements made Toms props nominal pitch lowabout 26 tip ap parently washes out about 15-in pitch Tom shoots straight-up climb cleanest climb occurs model launched leaning slightly right goes left looks has Near end run ship has rolled left until seems nearly upside down doesnt seem way decent transition glide can made last moment stab drops down auto-rudder cuts ship straightens out rolls over top good position starting glide think will see use technique WC later Cri tium Pierre Trebod saw high perform ance models change flight patterns slightly miss transition al titude loss tremendous did Needless say technique dan gerous ship must climbing steep ly engine cuts early have probably bought farm Having won World Championships both Power Wakefield will Koster now try Nordic glider Outdoor Records Bunch writ ing early December Outdoor sea son far finished seems like good time recap National Records established daring first eleven months 1977 January six records established five disallowed reason another Darryl Stevens took trouble set three Junior Cat re cords day flying Cat record meet run according Cat II rules no-no CDs see Page 9 1976-77 rulebook surviving mark January Junior Cat record 1601 set Keith Morgan Fresno Calif using Satellite 320 Two C-Gas records fell February Keith Morgan Fresno set Cat II Junior record 14300 using OS Max powered Geodetic Galaxie 585 Bob Scully Burbank Calif set Cat Senior record 40000 using K B powered Satelite 788 Joey Foster San Jose Calif using Cox IS powered Buck 500 designed dad set Junior Gas Cat II record 17220 Darryl Stevens flying design develop ed father Curt Thermic 18 set Junior HL Glider record 10560 March leanest month year record set Keith Morgan -A Gas Junior mark again time Cat using same hardware set Cat II mark April saw two Gas Junior records fall Joey Foster topped own previous Cat II mark time 2145 Paul Lidberg put Starduster 350 up Cat mark 14490 May biggie 10 records set over Memorial Day weekend alone Carl Linstrum set Junior Payload record early month topped later set Cargo record boot Greg Hutchison La Mesa Calif set Cat II Senior Gas record 635 using originaldesign 280 sq model Four Juniors set Cat records US Free Flight Champs Steve Whittman Mission Viejo flew Comet payload model designed himself 639 total Joey Foster broke own Gas record put ting score up flat 25 minutes Satellite 788 hands Scott Adikes posted B-Gas score 1527 using OS engine Bobby Morgan put Star duster-X up creditable 3109 Jeff Cunnyngham flew Unlimited Rub ber model designed himself record 2328 Also USFFC meet Guy Kirkwood flew original 051-powered model Open Gas score 3119 Three records got knocked off annual Re bel Rally Jacksonville Florida addition two set Carl Linstrum men tioned earlier Jim Bradley set Cat II Open Rocket record 1043 topping John Krickels score has books since 1971 30 seconds Jim flew 126 sq model own de sign June saw two A-Gas marks toppled Continued page 102 50 Model Aviation John Magnus promising Senior firsts seconds credit gets off flight indoor microfilm model may mildly concerned photographer Bob Meuser Bob Hannahs Half-A Tick Off pinch-off engine timer rigged operate auto-rudder tab just before engine cut finds gets smooth transition glide THE *wv/ IN TERNAI7 YO LM1ODEL ER loosen model structure weaken case RC-type mounts two approaches work well First sure back mount perfectly flat lapping carefully sand firewall sure mounting sur face also flat Second after mounting holes drilled model cut piece mylar wrap larger back mount finger coat mount surface model quick set epoxy bolt mount model mylar between lot work involved above operations results noted engine runs exactly same rpm model did test stand Wood Mounts did have time set up photos wood mounts column three important conditions satisfy First metal mounts flat matching surfaces Second stress free mounting Third durable mounting Heres suggestion flat wood mounts whether bearer type ply wood profile type put fiberglass sur face mount Before placing motor bearers model hold both bearers side side sand flat glass plate case bearers pre-constructed cross braces ladder style before installation model assemble first sand flat Next lay piece mylar glass plate cut piece regu lar weight fiberglass cloth slightly larger mount surface Using polyester slow setting epoxy brush rub resin sparingly until cloth wet throughout put thin coat mount surface Place mount wet cloth put weight until set Trim excess fiberglass razor saw file sand paper drill engine lugs have two separate bearers point bolt engine bearers before bonding model will enable retain perfect alignment engine mount build profile mount semble stub bearers balsa profile core b sand flat both sides glass plate c bond lightweight glass cloth both sides back point least 1 behind bellcrank mount lightly sand fiberglass surface flat d bond plywood doubler re peat steps b c using regular weight boat cloth instead lightweight procedure produces laminated structure durable actually creases speed profiles order 5 mph over less rigid struc ture reduction amount vibration transmitted wing/fuse lage joint reduces tendency crack greatly extends life reliability model Thats column Next month Ill discuss engine environment model fuel systems Don Jehlik 438A Schweer Dr Star Ri 1 Hawthorne NV89415 FF Duration/Meuser continued page 50 Greg Hutchison Chula Vista Calif set Senior Cat II record 834 topping own previous record set month earlier William Morgan Fresno Calif set Open Cat record 4000 using Supertigre 19 powered Satellite 450 annual all-hydro Gathering Ducks meet Gridley Calif John Drobshoff set Open -A Cat ROW mark 1114 Hydro-Star ROW kit market Also July Darryl Stevens set Junior Cargo record 60 ounces Nats August two California Seniors set Cat II Gas records Tim Young put up Supertigre 15-powered Bye Centennial designed father Lou Class B 1647 Fred Cal houn Jr put up K&B 21-powered modified Satellite 588 1500 102 Model Aviation .- * AT TROL CAT Engine Technique/Jehlik continued page 59 127 R3 September Planesmen Re gionals Ft Worth Texas William Jen kins Memphis Tenn set Cat II Open -A Gas mark 1611 using Clem-designed Country Boy ap peared March 1977 issue Model viation various meets three Cali fornians set records September Jon Dc Fries set Open Category A-Gas mark 5212 using Rossi-powered Satellite 450 Nordic A-2 record 2400 set Jef Livotto using Ultimate Dragmaster now kitted its designer Tom Hutchinson FAT Semi-Finals Taft Howard Doering set Open Cat II B-ROW mark 627 using Mel Schmidt designed Shocer 750 driven K&B 29 motor ancient pre green-head model worn out starter required spin fast enough catch record set October Half-A Gas Open Cat II Glenn Schneider Flying Northern California monthlies Sacramento Glen racked up score 18 mm flat using 325 sq model own design Lil Booger November HLG Nats goofed F/F Nats story November 1977 neglected mention highest outdoor HLG time age groups posted Senior James Lueken Escondido Calif did big kids FRs Glider new series kitted M P received Tulsa Glue Dobbers Trophy trouble Leuken has active CL flying broke up too models making switch FF has flying FF Gas Scale some time Some sort Scale involvement would have difficult him avoid inasmuch lives around corner Bill Hannan has also dabbled -A Gas FF now starting fly A-2 Nordic Glider circle-zoom Leuken has fly ing Outdoor HLG two three years has tried better standard designs before zeroing FRs Glider 1977 Nats first try HLG circuit servo tester omitted recent Van Putte column published pg 88 Feb issue suffered loss two numberslO 6 located shown accompanying portion schematic competition Winning Tulsa Glue Dobbers pretty good starters James likes pick own air admits its comforting have glider roll out right next model al ready way up second contest Orbiteers Annual November James 7 sec out first place com bined Senior/Open OHLG event statement Bill Blanchards winning both Indoor Outdoor HLG events Nats accomplishment previously achieved history model aviation true needs little expansion First records go back 1963 anything prior regard prehistoric Since time Blanchard Open flyer ac complish double win has hap pened three times other age groups 1974 Mike Stoy Senior time copped firsts both high-ceiling door HLG event Outdoor HLG event took second low-ceiling door HLG boot 1965 Randal Rich mond took two firsts Junior same year John Manczuk did same Senior easy ignore Junior Senior accomplishment since 99% action takes place Open age groups jock event such HLG senior citizens take home bananas example last 15 years Senior has posted top Indoor time once during period 1963 1973 top Outdoor times posted Open contestants However perhaps times achanging Seniors have taken home Tulsa Glue Dobbers Trophy awarded highest overall Outdoor HLG score three out last four Nats Blanchards consistent winning Out door HLG year after year intense Southern Cal competition nevertheless - quite accomplishment coupling two HLG Nats wins must - some sort accomplishment previously achieved model aviation history Think Cheap Writing Satellite its editor Ralph Prey has lament ing over high cost balsa newer hot Shnuerle-ported engines partial solution came reply Tom Hutchinson personal experience find cost new engines bit offputting Ive thinking about making some new gassies Such thoughts die quickly however see cost engines hobby shop new hot engines really necessary competitive AMA gas high power-to-weight ratio still way obtain hot performance engine/plane combination So cheap solution would match design plane power available no rule requiring Classic C ships have 800 sq Think about something like 400 sq model Fox Stunt 35 Fox doesnt have horsepower K&B 40 comparable power good 15 weighs 6 oz Prey suggests K&B Stallion 35 alter native 9 prop total weight say 16 oz youd have ship could max easily 12-sec engine runs older plain-bearing engines have good power-to-weight ratio Such en gines OS Max 29 35 Johnsons pose interesting possibilities coupled proper design Some new Testors engines relatively cheap offer surprising performance al though bit heavy Other pos sibile sources economy engines used highly competitive events such FAI Power Pylon Racing no longer current champ Old Supertigre 15s Cox TD lSs es pecially good choice because its low weight K&B rear-rotor Pylon March 1978 103 iIL APRIL 78 & 91973 Friday 9 am 6 pm Saturday 9 am 6 pm Sunday 9 am 330 pm presented WEAI SIGNALS R/C CLUB PO BOX 5772 TOLEDO OHIO 43813 77 IN *J 40s would make perfectly good FF en gines though latest thing approach competitors events might willing part such obsolete engines reason able prices Occasionally some real bargains pop up dealers shelves Im sure whether particular engine Tom talking about Sig selling off Fox 36 engines No 13800 list price $1200 through its dealers ver sion having needle valve calibrated pressure-tank operation Perhaps simply matter tweaking out needle valve hole switch suction preference standard suction en gine No 13600 available combin ation number C/L kits total price about half what ball-bearing Schnuerle engine goes Come think Jim Clem seems have done rather well over years using Fox engines Preys new Class B model sports Veco 29 Ok takes care engine situ ation now what about high cost balsa wood Bob Meuser 4200 Gregory St. Oak land CA 94619 ADVERTISERS INDEX Ace Radio Control86 Andrews Aircraft Model Co99 Coverite47 97 Cox Hobbies Inc3 Davis Diesel Development97 Du-Bro Products87 92 EK-Products7 Experimental Aircraft Assoc94 Flyline Models88 Fox Mfg Company7 Carl Goldberg Models [v32][b-1-10-1-10]]Inside Front Cover Grish Brothers98 Hobby Hideaway86 Hobbypoxy95 International Modeler Show102 K&BMfg91 Kraft Great Lakes Inc89 Kustom Kraftsmanship88 Midwest Model Products6 Modernistic Models88 Morrison Repla-Tech86 Pactra Industries101 Peck-Polymers95 Progress Mfg Company60 Sailplane Accessory Company97 Sig Mfg Company1 Sterling Models Inc87 Tatone Products Inc90 Toledo Show103 Top Flite Models Inc5 Westport International93 Williams Brothers96 World EnginesBack Cover WRAMSShow100 104 Model Aviation