r Aerobahcs El Wynn Paul NO ONE will able say stunt event 1977 Nationals well clarified prospective participants Event Director Arlie Preszler making outstanding effort let stunt world know just what expect annual meeting gang As will read ing May may just putting finishing touches latest crea tion beat world Nats Arlies thoughts appearance judging Nats part competi tion usually talked about fliers rarely explained event di rector Says Arlie manner plan conducting judging makes much stand-off thing has past dont expect run fingers down fillets tweek wheels spinability Overall appearance will have much influence superpicky-picky-detail Just no gets wrong idea however note can spot blistered fillet half way across hangar further will level best keep personal biases out interested 11 like canopies can see through like pilots excess detail doesnt get too excited 2 like concealed control horns am really impressed con cealed mufflers 3 like see something happen landing gear done scale have neat wheel pants gear fair ings 4 am impressed paint schemes involve areas colors rather basic color scheme little trim spread around 5 few ink lines neat dont try snow architect drafting ability 6 dont object exposed cylinders parts engines adds overall design ship show totally concealed mechanics can very impressive too 7 like both traditional scale-type stunt ers equally Arlie adds rule book divides ap pearance equally between Workmanship Finish think am correct taking workmanship factor skill effort went construction model finish factor subjective artistic merit model Anyway guys will level best fair possible please dont get too up tight over point two Remember 40 landing points 20 ap pearance points same time dont forget Gieseke beat Les McDon aId point 1975 Retracts For years stunt fliers have debating pros cons retractable landing gear planes Harold Price back Jan/Feb 64 issue Ameri can Modeler detailed system re tracts Crusader used 010 Cox engine mounted backplate Fox 35 delivered pressure homemade air cylinder air cylinder used drive two torsion bars Continued page 96 June 1977 31 Arlie Preszler Nats ctor Bob English-designed Quasar own foam wing Solarfilm/Hobbypoxy Powered Adami sin Max 35 Rev Up 10/6 weighs 48 Os T Inares nugome nsiaiiauon OT ma mann prouma tunter ruler illustrates need align Fancher pic ment tank center venturi Photo Charles Hubble Retracts being tried number name builders example left P-51 Bob Jones Right Shown up position John Davis retract system employs servo actuated battery pack insulated flying lines Strut fairings close wells Paul photo Continued page 95 advantage Good luck Howard Shenton very interesting re port February 1977 issue MACA N/L concerning various bladder/ pacifier tanks According Howard surgical tubing bladders seem way go Theyre cheaper can tailored requirements selecting proper diameter wall thickness tubing Hes making up accurate re liable metering system will check bladder/pacifier system report findings MACA N/L publica tion Notice tremendous difference pressure filled 3 ounces fuel way 4 psi 23 psi heavy walled tubing rarely breaks crash critical needle settings have system want tested send couple samples Howard Shenton 310 Drury Lane Mauldin SC INDIANA 46373 29662 Bucks Worth challenge recently ap peared two-time Nationals winner Sherwood Buckstaff letter MACA asks anyone interested taking up challenge bring along few extra airplanes several hundred dollars years Nats lust make inter esting Texans want gold greenbacks too Can beat Texans year Brasher Strieter Rush Danny Dirt hisself combat worlds reply will appear next column Closing thoughts finally next time youre contest sure give officials hard time because pay salaries Abuse direct proportion salary pay Just dont take seriously let tell great have never helped contest much less CDd officials dont receive penny efforts Keep mind especially WE CAN DO IT WERE RADIO CONTROL MODELERS.WHO ARE IN THE RADIO CONTROL MODELER BUSINESS know what its like want new bigger machine able find know what its like build ing reach certain point know ask help . know what its like down need part spend week looking still find will put picture popular YOU IN THIS models stock custom build give good advice need PILIUIIL right . have partsall themto keep flying Send $1 new helicopter 7 catalog parts list QSC MODELER EUHOBBY SHOP Hells Planes Cars Boats Radios Parts RC Hobbyists 1999 Larkin Avenue Elgin Illinois 60120 Dept 1 16312-697-3737 4 Nationals summer last time thanked host club putting good contest Please send friendly letters inquiries nasty notes go MACA News letter write Charlie Johnson 3716 Ingraham St San Diego CA 92109 CL Aerobatics/Paul continued page 31 wing mounted gear Actuation re tractable gear difficult part retract gear Price used air pres sure switch set work air speed 30 mph Mounted wing get away prop blast pressure switch used bleed off pressure pump plane ground close off bleed hole plane reached flying speed Price didnt state exactly much system weighed must have 2 4 ounces did state retracts made square maneuvers much better re duced drag also helped hourglass Since Prices experiment have other attempts use retracts 1973 Nationals Arch Adamisin semi-scale Tony Goldberg retracts operated servo battery worked ground Arch chose fly windy Oshkosh gosh John Davis set retracts 76 Nats did work air Insulated lines carried current battery pack tached handle current oper ated retracts everybody saw qualifications morning Nats afternoon John chose utilize retracts because wind up evidently felt needed extra drag Bob Jones Long Beach Cal sent picture P-S 1 semi-scale stunter retracts has hatch bottom fiberglass fuselage access servos cockpit removable ac cess battery found device achieve fail-safe-down 1958 Flying Models magazine Al Rabe has working twin-engine stunter retracts since 1974 writer has seen retracts work utilizing wing-weight battery actuate servo raise gear pres sure takeoff back plate lowers gear after engine shuts down truly ingenious setup seems work well ground however Al has lot trouble getting right powerplants twin Currently has proposal fore CLCB increase allowable engine displacement stunt 72 cu allow him use two reliable 35-size en gines twin Incidentally Al uses up down movement familiar shock landing gear actuate microswitch gear leaves ground actuates servo raise gear MORE wHAirI1id7p4 set iaser ofl satne powerYELLOW eesede ptC- PROPEL e JB ad, et 4063 64 8 AC 124 3 BlaJe Tractor125 126 150 5-354 64 ORISH 3 BIa6 Pader 635O ST JOHN BROS WE CAN PUT [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488
Edition: Model Aviation - 1977/06
Page Numbers: 31, 96, 97
r Aerobahcs El Wynn Paul NO ONE will able say stunt event 1977 Nationals well clarified prospective participants Event Director Arlie Preszler making outstanding effort let stunt world know just what expect annual meeting gang As will read ing May may just putting finishing touches latest crea tion beat world Nats Arlies thoughts appearance judging Nats part competi tion usually talked about fliers rarely explained event di rector Says Arlie manner plan conducting judging makes much stand-off thing has past dont expect run fingers down fillets tweek wheels spinability Overall appearance will have much influence superpicky-picky-detail Just no gets wrong idea however note can spot blistered fillet half way across hangar further will level best keep personal biases out interested 11 like canopies can see through like pilots excess detail doesnt get too excited 2 like concealed control horns am really impressed con cealed mufflers 3 like see something happen landing gear done scale have neat wheel pants gear fair ings 4 am impressed paint schemes involve areas colors rather basic color scheme little trim spread around 5 few ink lines neat dont try snow architect drafting ability 6 dont object exposed cylinders parts engines adds overall design ship show totally concealed mechanics can very impressive too 7 like both traditional scale-type stunt ers equally Arlie adds rule book divides ap pearance equally between Workmanship Finish think am correct taking workmanship factor skill effort went construction model finish factor subjective artistic merit model Anyway guys will level best fair possible please dont get too up tight over point two Remember 40 landing points 20 ap pearance points same time dont forget Gieseke beat Les McDon aId point 1975 Retracts For years stunt fliers have debating pros cons retractable landing gear planes Harold Price back Jan/Feb 64 issue Ameri can Modeler detailed system re tracts Crusader used 010 Cox engine mounted backplate Fox 35 delivered pressure homemade air cylinder air cylinder used drive two torsion bars Continued page 96 June 1977 31 Arlie Preszler Nats ctor Bob English-designed Quasar own foam wing Solarfilm/Hobbypoxy Powered Adami sin Max 35 Rev Up 10/6 weighs 48 Os T Inares nugome nsiaiiauon OT ma mann prouma tunter ruler illustrates need align Fancher pic ment tank center venturi Photo Charles Hubble Retracts being tried number name builders example left P-51 Bob Jones Right Shown up position John Davis retract system employs servo actuated battery pack insulated flying lines Strut fairings close wells Paul photo Continued page 95 advantage Good luck Howard Shenton very interesting re port February 1977 issue MACA N/L concerning various bladder/ pacifier tanks According Howard surgical tubing bladders seem way go Theyre cheaper can tailored requirements selecting proper diameter wall thickness tubing Hes making up accurate re liable metering system will check bladder/pacifier system report findings MACA N/L publica tion Notice tremendous difference pressure filled 3 ounces fuel way 4 psi 23 psi heavy walled tubing rarely breaks crash critical needle settings have system want tested send couple samples Howard Shenton 310 Drury Lane Mauldin SC INDIANA 46373 29662 Bucks Worth challenge recently ap peared two-time Nationals winner Sherwood Buckstaff letter MACA asks anyone interested taking up challenge bring along few extra airplanes several hundred dollars years Nats lust make inter esting Texans want gold greenbacks too Can beat Texans year Brasher Strieter Rush Danny Dirt hisself combat worlds reply will appear next column Closing thoughts finally next time youre contest sure give officials hard time because pay salaries Abuse direct proportion salary pay Just dont take seriously let tell great have never helped contest much less CDd officials dont receive penny efforts Keep mind especially WE CAN DO IT WERE RADIO CONTROL MODELERS.WHO ARE IN THE RADIO CONTROL MODELER BUSINESS know what its like want new bigger machine able find know what its like build ing reach certain point know ask help . know what its like down need part spend week looking still find will put picture popular YOU IN THIS models stock custom build give good advice need PILIUIIL right . have partsall themto keep flying Send $1 new helicopter 7 catalog parts list QSC MODELER EUHOBBY SHOP Hells Planes Cars Boats Radios Parts RC Hobbyists 1999 Larkin Avenue Elgin Illinois 60120 Dept 1 16312-697-3737 4 Nationals summer last time thanked host club putting good contest Please send friendly letters inquiries nasty notes go MACA News letter write Charlie Johnson 3716 Ingraham St San Diego CA 92109 CL Aerobatics/Paul continued page 31 wing mounted gear Actuation re tractable gear difficult part retract gear Price used air pres sure switch set work air speed 30 mph Mounted wing get away prop blast pressure switch used bleed off pressure pump plane ground close off bleed hole plane reached flying speed Price didnt state exactly much system weighed must have 2 4 ounces did state retracts made square maneuvers much better re duced drag also helped hourglass Since Prices experiment have other attempts use retracts 1973 Nationals Arch Adamisin semi-scale Tony Goldberg retracts operated servo battery worked ground Arch chose fly windy Oshkosh gosh John Davis set retracts 76 Nats did work air Insulated lines carried current battery pack tached handle current oper ated retracts everybody saw qualifications morning Nats afternoon John chose utilize retracts because wind up evidently felt needed extra drag Bob Jones Long Beach Cal sent picture P-S 1 semi-scale stunter retracts has hatch bottom fiberglass fuselage access servos cockpit removable ac cess battery found device achieve fail-safe-down 1958 Flying Models magazine Al Rabe has working twin-engine stunter retracts since 1974 writer has seen retracts work utilizing wing-weight battery actuate servo raise gear pres sure takeoff back plate lowers gear after engine shuts down truly ingenious setup seems work well ground however Al has lot trouble getting right powerplants twin Currently has proposal fore CLCB increase allowable engine displacement stunt 72 cu allow him use two reliable 35-size en gines twin Incidentally Al uses up down movement familiar shock landing gear actuate microswitch gear leaves ground actuates servo raise gear MORE wHAirI1id7p4 set iaser ofl satne powerYELLOW eesede ptC- PROPEL e JB ad, et 4063 64 8 AC 124 3 BlaJe Tractor125 126 150 5-354 64 ORISH 3 BIa6 Pader 635O ST JOHN BROS WE CAN PUT [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488
Edition: Model Aviation - 1977/06
Page Numbers: 31, 96, 97
r Aerobahcs El Wynn Paul NO ONE will able say stunt event 1977 Nationals well clarified prospective participants Event Director Arlie Preszler making outstanding effort let stunt world know just what expect annual meeting gang As will read ing May may just putting finishing touches latest crea tion beat world Nats Arlies thoughts appearance judging Nats part competi tion usually talked about fliers rarely explained event di rector Says Arlie manner plan conducting judging makes much stand-off thing has past dont expect run fingers down fillets tweek wheels spinability Overall appearance will have much influence superpicky-picky-detail Just no gets wrong idea however note can spot blistered fillet half way across hangar further will level best keep personal biases out interested 11 like canopies can see through like pilots excess detail doesnt get too excited 2 like concealed control horns am really impressed con cealed mufflers 3 like see something happen landing gear done scale have neat wheel pants gear fair ings 4 am impressed paint schemes involve areas colors rather basic color scheme little trim spread around 5 few ink lines neat dont try snow architect drafting ability 6 dont object exposed cylinders parts engines adds overall design ship show totally concealed mechanics can very impressive too 7 like both traditional scale-type stunt ers equally Arlie adds rule book divides ap pearance equally between Workmanship Finish think am correct taking workmanship factor skill effort went construction model finish factor subjective artistic merit model Anyway guys will level best fair possible please dont get too up tight over point two Remember 40 landing points 20 ap pearance points same time dont forget Gieseke beat Les McDon aId point 1975 Retracts For years stunt fliers have debating pros cons retractable landing gear planes Harold Price back Jan/Feb 64 issue Ameri can Modeler detailed system re tracts Crusader used 010 Cox engine mounted backplate Fox 35 delivered pressure homemade air cylinder air cylinder used drive two torsion bars Continued page 96 June 1977 31 Arlie Preszler Nats ctor Bob English-designed Quasar own foam wing Solarfilm/Hobbypoxy Powered Adami sin Max 35 Rev Up 10/6 weighs 48 Os T Inares nugome nsiaiiauon OT ma mann prouma tunter ruler illustrates need align Fancher pic ment tank center venturi Photo Charles Hubble Retracts being tried number name builders example left P-51 Bob Jones Right Shown up position John Davis retract system employs servo actuated battery pack insulated flying lines Strut fairings close wells Paul photo Continued page 95 advantage Good luck Howard Shenton very interesting re port February 1977 issue MACA N/L concerning various bladder/ pacifier tanks According Howard surgical tubing bladders seem way go Theyre cheaper can tailored requirements selecting proper diameter wall thickness tubing Hes making up accurate re liable metering system will check bladder/pacifier system report findings MACA N/L publica tion Notice tremendous difference pressure filled 3 ounces fuel way 4 psi 23 psi heavy walled tubing rarely breaks crash critical needle settings have system want tested send couple samples Howard Shenton 310 Drury Lane Mauldin SC INDIANA 46373 29662 Bucks Worth challenge recently ap peared two-time Nationals winner Sherwood Buckstaff letter MACA asks anyone interested taking up challenge bring along few extra airplanes several hundred dollars years Nats lust make inter esting Texans want gold greenbacks too Can beat Texans year Brasher Strieter Rush Danny Dirt hisself combat worlds reply will appear next column Closing thoughts finally next time youre contest sure give officials hard time because pay salaries Abuse direct proportion salary pay Just dont take seriously let tell great have never helped contest much less CDd officials dont receive penny efforts Keep mind especially WE CAN DO IT WERE RADIO CONTROL MODELERS.WHO ARE IN THE RADIO CONTROL MODELER BUSINESS know what its like want new bigger machine able find know what its like build ing reach certain point know ask help . know what its like down need part spend week looking still find will put picture popular YOU IN THIS models stock custom build give good advice need PILIUIIL right . have partsall themto keep flying Send $1 new helicopter 7 catalog parts list QSC MODELER EUHOBBY SHOP Hells Planes Cars Boats Radios Parts RC Hobbyists 1999 Larkin Avenue Elgin Illinois 60120 Dept 1 16312-697-3737 4 Nationals summer last time thanked host club putting good contest Please send friendly letters inquiries nasty notes go MACA News letter write Charlie Johnson 3716 Ingraham St San Diego CA 92109 CL Aerobatics/Paul continued page 31 wing mounted gear Actuation re tractable gear difficult part retract gear Price used air pres sure switch set work air speed 30 mph Mounted wing get away prop blast pressure switch used bleed off pressure pump plane ground close off bleed hole plane reached flying speed Price didnt state exactly much system weighed must have 2 4 ounces did state retracts made square maneuvers much better re duced drag also helped hourglass Since Prices experiment have other attempts use retracts 1973 Nationals Arch Adamisin semi-scale Tony Goldberg retracts operated servo battery worked ground Arch chose fly windy Oshkosh gosh John Davis set retracts 76 Nats did work air Insulated lines carried current battery pack tached handle current oper ated retracts everybody saw qualifications morning Nats afternoon John chose utilize retracts because wind up evidently felt needed extra drag Bob Jones Long Beach Cal sent picture P-S 1 semi-scale stunter retracts has hatch bottom fiberglass fuselage access servos cockpit removable ac cess battery found device achieve fail-safe-down 1958 Flying Models magazine Al Rabe has working twin-engine stunter retracts since 1974 writer has seen retracts work utilizing wing-weight battery actuate servo raise gear pres sure takeoff back plate lowers gear after engine shuts down truly ingenious setup seems work well ground however Al has lot trouble getting right powerplants twin Currently has proposal fore CLCB increase allowable engine displacement stunt 72 cu allow him use two reliable 35-size en gines twin Incidentally Al uses up down movement familiar shock landing gear actuate microswitch gear leaves ground actuates servo raise gear MORE wHAirI1id7p4 set iaser ofl satne powerYELLOW eesede ptC- PROPEL e JB ad, et 4063 64 8 AC 124 3 BlaJe Tractor125 126 150 5-354 64 ORISH 3 BIa6 Pader 635O ST JOHN BROS WE CAN PUT [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488