Larger average Stunter still compact somewhat-scale Stuka its 37-in-span 223-sq-in wing real performer Its quite competitive tons fun fly U Barry Baxter IN THE EYES fledgling modelers kit manufacturers indisputable ex perts model design standards After youre going invest time capital building models youre certainly go ing make sure theyre thoroughly tested deliver best possible per formance Surely kit companies wouldnt produce second-rate equipmentor would average beginner unquestioningly sumes manufacturers have proven products through hours flight testing buys kit takes faith hes getting best performance attainable particular type model Ergo kit companies build models 18to 24-in wingspans must cor rect size airplanes right Heaven forbid should question commer cial arbiters considering anything wing area excess 120 sq little time hobby usually suffi cient destroy illusion Manufacturers dont have answers theyre ten swayed expediency Smart builders discover better ways make airplanes Theyve also learned gener ally bigger better Perhaps Control Line manufacturers back Fifties figured smaller mod els would cheaper produce could fly Just barely small airplane syndrome rani pant throughout industry 15-size kits little bigger current AA Com bat models fact some todays 15 kits make excellent models Combat fliers have probably made advances performance other group Its populous cate gory flying Combat competition places high performance demands model Combat pilots experience has proven airplanes wing areas rang ing between 180-200 sq fly much bet ter have seen experimental Combat model 270-sq-in wing Though flew quite well craft too difficult build light enough Combat competi tion wasnt viable design assortment Stunters have September 1990 63 Top picture finished Stuka display Day contest modei compieted weekend before wasnt abie fiy competition because fuel capacity prob iem its powered Cox Medallion 049 engine swinging three-bladed prop Stuka weighs 10-11 oz will fly entire Stunt routine short 35-ft lines Above shot shows large inverted gull wing model paInted wIth Poliy-S plastic model paint published including some outstanding designs featured magazines time time has gained universal accept ance Part problem CL fliers have never seen really good-flying AAs no doubt recall miser able ready-to-fly models probably sin gle biggest reason people shun Control Line flying solid wood kits werent much better youve never seen small model can really carve air youve missed some exciting fly ing machine performance Heres chance catch up 37A-in wingspan 2235 sq wing area Stuka great-flying ship Im hoping will whet appetite some Control Line fliers out Stuka design influenced favorite 35-powered Stuka Stunt models created Hi Johnson back 1950s airplanes just distant cousins scaled-down version de sign wouldnt have worked AA Stunter wing far too thick tail moment arm too short scalesized fuselage AA Stuka weighs 10-11 oz powered Medallion 049 Though 35-ft linesrather short compared 42-ft norm Stunt flyingtend limit actual maneuvering area model still flies entire Stunt pattern ease wing has 155% airfoil el liptical leading edge maintains good laminar airflow high angles attack airfoil comes very successful Combat design negates need flaps other high lift/drag devices As long CG center-of-gravity properly located small elevator adequate task hand prototype built two weeks hope being able fly day contest Though completed weekend before contest fuel capacity problem couldnt sorted out time Stuka compete Three-quarter-ounce capacity just aint enough get through pattern folks Construction Wing Begin cutting rib templates aluminum Formica other hard ma terial Place eight pieces A6 balsa tween templates couple pins small nails through templates will work nicely holding things together sure nails straight wont interfere trim ribs size Place tip template leading edge behind root template leading edge align spar slots Carefully cut sand balsa outside templates cut away balsa doesnt look like rib cut spar slots Remove first set ribs repeat operation second set Square off edges shown plans Make four #3 ribs two /16 plywood Form landing gear wire shown Cut slot plywood #3 rib see plan insert gear wire make sandwich balsa #3 ribs used CyA cyano acrylate glue throughout construction Install trailing edges ribs spars four wing panels glue two #3 triple rib assemblies stalled landing gear wire yet inboard panel ribs #1 #2 must have main spar notches extended forward bring leading edge spar back parallel main spars Working upside down level trailing edge inboard panel Raise oppo site inboard tip l%2 trim center spar tips correct dihedral glue center section together Add spar joiners bellcrank floor Turn center section upright again level panels Because landing Left Close-up Stukas business end model can powered s TeeDee 049/051 Medallion 049 flies quite well three-biaded prop does better standsrd Cox 5 x 3 prop Right canopy crew bulkhead sre Guiliow Stuka kit canopy can also heat-formed built up machine gun made scrap balsa brass tubing photos Mike Kevilie 64 Model Aviation side shot shows fuselage very nearly scaie nose tail moment arms although slimmer scale deference performance Decais Guiliow kit author displaying blue belly Stuka show its relative size its consid erably larger typical Stunter Full-Size Plans Available. See Page 196 lIDS BALSA SHEETING03Z PLY SPLICESWING SHEETING MOST JGIN TOP ANS RSTSSM7IN CENTER OF TR CRIES5311K SG BALSA LEASING EDGE ESPL—— LICRANK II SANDWICH L 0___________________________ BETWEEN TAG SHEETS OF lB WING FRONT VIEWIIIKOIABALSA rIB BALSA SHEETBALSA WHEEL BESTS- 0 SHEETS B BALSA U 2 SHEETS STAILIZE~i / Ir ELEG BORN RGOT TEMPLATE INGT RIB TERHLATESRHBEEBGR 111TIP RIB---ALOM GB FORMICA TEMPLATE WING RIB DETAIL LANDING GEAR DETAIL /SOIT IS IAGOILLOW 550KG CANOPY 5132 BALSA SPRJCEANS CREW F GORES5/B BALSA SHEETIIB% 24 TOPBALSA / T RODDEH 318 BALSA SHEETC SSOPAP FILL ACETOP INGLLSWESIIA SQII SPINNERBALSA1 F-2IYSG ELEG F-I___F-S-------TRAVEL IRASI IOMITTITT APLE HOLD DOWN BLGCH lAS RU PUS HRGO IA MAPLEFOELFUSELAGE SIDE VIEWlIlA BALSA2 PIECE BALSA MSTSR MOUNTTAGSI LEFT SISE OMITTED FGR CLARITY ICOVER SJPPGHTlOAD/BTAILWHEEL FAIHING HIS BALSAMOSIC WIRE COO 549 TO EBENE BEE TESTHG BALSASHEET BOTTOMlID 0/B TAILWHEEL SRI-STOCKUBARIC HIGO CE IllS BALSA GREET BOTTOM VIEWFRONT VIEW ORG PLYIIGSG BALSAFUSELAGE SIDES DOUBLERSCR1- STOCIS AS DIBMAPLE I FUSELAGE TOP VIEW MOTOR MOUNTS TOP BLOCKS SMITTEB FOR CLARITY END DOVER WHEELSL B DETAIL 5130 BALSA ~PLYGREET 1F-S qznPOEL TANK HAHOWODO BLOCAIV EXTENSION FUR COWL BALDT"""W-31TF7 SEE TEUT DOWN SCREW SLOE TO TANKI MODIFIED 3/40Z FUELTANK IG3UIHS-BFROMII BALSA AGO SERUM IIIGIOLYWOUO PLO I N ALSA ITOLCINSTOLLEO IFICAT lOGS WING SPANDO-IIG WINO AREAODD 5 50 IN FOSE LENOTHOH ENGINEGAS TO PERFECT 20 SI23H5K IMODEL AVIATION STUKA STUNT DESIGNED BY BARRY BAXTER TRACING BY JOE DEMARCO ALL RIGHTS BEBERVEB US- BALSA —fl--t-AGO BETTOR ADD 110 02 WEIOST ON GASBOARD WINO 1100 BALSA OHEETISO TOP AND BOTTOM_______________________ AFTER COSTING RIB STACKS SFF GIBES BAD ENDS AS SHOWN OS B AS TEMPLATE FUR RERAINDER OP REOUIREO 3 RIBS gear wires youll have work along edge building table Raise out board tips #3 rib assem blies making sure landing gear wires parallel other perpendicular ground Trim spars lead ing trailing edges correct dihedral angle glue #3 rib assemblies wing panels together Install belicrank lead-outs pushrod Trim install inboard out board leading edge planking joins center #3 rib assembly Install tips center section planlting false trailing edges Dont forget add A-oz tip weight Fuselage Assemble right left fuse lage doublers engine mount filler blocks fuselage sides Slip sides wing add bulkheads making sure fuselage remains square centerline wing Install belly plank ing tail wheel support Install / ply baffle plate maple engine mount bear ers drill mount install nut plates baffle plate helps direct airflow over engine through engine compart ment out through rear tank area eliminating exhaust gases flowing through engine compartment Experience has shown air does always flow well intake behind spinner cowl clear airflow through compartment Stabilizer elevatorE rudder Con struction simple straightfor ward Install stabilizer elevator set up control system Elevator up-anddown travel 30 B adequate desired can install pushrod end ac cess door below stabilizer although has proven bit weak spot Install upper fuselage blocks rud der Build install wheels wheel pants tail wheel canopy crew decals came Guillow Stuka kit canopy could formed over wood block canopy material heated oven could cut bent flat sheet wheel pants Gulllow Stuka kit could also modified short ened used Covering finishing original covered preprimed Micafilm painted Polly S acrylic plastic model paint over automotive primer sealed coat Black Baron clear worked well authentic colors available hobby shops carry plastic models 1 %-oz fuel tank built adding section Perfect #20 tank rear tank cap removed piece 010 tin bent shape tank inserted its end original end cap reattached tank replumbed Uniflow shown block hardwood glued tank act anchor cowl mount ing screw sure screw isnt long penetrates tank Flying Balance model shown original required oz lead nose will groove well still have crisp re sponse square corners Loops require 25-30 B elevation accomplish leaving plenty room fly through 45 B pat tern maneuvers prototype powered stock Cox Medallion found 5 x 3 black Cox prop quite efficient couple hints may order assist operating Cox rotary-valve engines Replace stock needle valve Tee Dees fine-thread version available Dale Kirn 283 N Spruce Dr Ana heim CA 92805 Kustom Krafts manship PO Box 3010 Fallbrook CA 92028 Shim cylinder until its shoulder flush piston top dead center saves plugs ensures proper port timing Shims available Kustom Kraftsmanship installation instruc tions included Before starting engines clean spraybar assembly thoroughly remove old castor oil jets especially theyve sitting couple weeks initial start will much easier youll have fewer operational hassles overall low battery can biggest frustrations flying make sure yours fresh isnt engine will pop bang resist efforts start Continued page 170 September 1990 65 SOFT BALSA BLOCK WING TIPS 020 GIA MOOC-I IllS BALSA WIRE LEADGOTS__I AR EZ BALSA TRAILING EDDE115 BALSA SHEET FLAPS couple weeks Bladder Grabber year Northeast Reglonals didnt fly Fast Combat because problem fly-aways contest held airport Eugene OR lots expensive commercial jets cruising around Its bad enough having fly-away model come rest flying areabut worse cads up area inhabited nonfliers Lets hope some can come up reliable fuel shutoff could used eventsor minimum something would destabilize model keep within confines flying area competitors ones have dodge youre thinking buying Fox Mark VI engines youd best get phone Duke Fox now current price engine $100 its available factory tel 1-501/646-1656 report have 100 engines left theyre gone. well know rest giant leap technology new Shur iken engine seems just what its 29000-rpm red line about 50% power current Cox TD 049 Look some very large models using engine ap pear sometime soon word got manufacturer tally swamped orders little jewel about $200 copy fast guys going going faster will difficult fly current 35-ft lines may forced move up 42 ft Somebody asked thought best Combat pilot world US have legend Riley Wooten Joining very elite group would guys like Richard Stubblefield Howard Rush entertaining watch doesnt win have whole bunch top-notch fliers category too close callpeople like Fluker Cleveland McFad den mention twin terrors John Stubblefield Michael WilIcox Theres bunch foreigners deserve try out worlds finest too British have Richard Evans Dave Wood Mick Tiernan always-tough Mr Vernon Hunt about Soviet stars like Doroshenko Beliaev Necheutkhinand reigning World Champion Fai xov No list would complete Wak kermans Fred Meyer remember Ostemans performance 1984 World Champs John Madden can have all-American team should entitled all-world team Maybe after next World Champs Ill give some thought may safer pick people have already retired Stuka Stunt/Baxter Continued page 65 Maybe want weekend flier Maybe want model thatll leave smile face AA day con tests arrive maybe want both Off contest trail Stuka guaran teed unusual AA Stunt ships aroundand ablest fliers designed win USFFC/Oldenkamp Continued page 69 Mother Natures support system pre vailed well late afternoon Two very significant records established Paul Herbst broke 1984 P-30 mark record 3008 spite being away chase best two hours day weakened crack six-minute flight barrier oldest stan dards Bobby Morgans 3109 Junior Gas 1977 fell newcomer JonMark Carman 4049 Finally Terry Thorkildsen copped Ocie Randall High Time Gas Trophy posting 6918 just shy own record category Model Aviation plan Astrostar Out standing climaxes great day As dusk approached us out test sport fly eye toward night session Sundays bigger slate Dark scud horizon announced change weather Some periodic dust cells blew through temperature droppedbut before author man aged sacrifice brand-new Wakefield BoomBox IV violent thermal literContinued page 174 EI Amount lock No DescriptionPrice III Toorder HI II HoI3lwIm3Iw NTRNAIIOHAI INC IERICANHANDLING CHARGESub Total EXPIESCredit Card order7l% Tax TN Only Check wIth order orI order ~$490Handling COD Order TOTALIblank Name 1* Street Address CityStateZipI call EMasterCard EVisa DAmerExp Exp Date615 Card No ElShip CODJMy Check enclosed $I nrn El 170 Model Aviation ma Name Street Addreas City State Zip
Edition: Model Aviation - 1990/09
Page Numbers: 63, 64, 65, 170
Larger average Stunter still compact somewhat-scale Stuka its 37-in-span 223-sq-in wing real performer Its quite competitive tons fun fly U Barry Baxter IN THE EYES fledgling modelers kit manufacturers indisputable ex perts model design standards After youre going invest time capital building models youre certainly go ing make sure theyre thoroughly tested deliver best possible per formance Surely kit companies wouldnt produce second-rate equipmentor would average beginner unquestioningly sumes manufacturers have proven products through hours flight testing buys kit takes faith hes getting best performance attainable particular type model Ergo kit companies build models 18to 24-in wingspans must cor rect size airplanes right Heaven forbid should question commer cial arbiters considering anything wing area excess 120 sq little time hobby usually suffi cient destroy illusion Manufacturers dont have answers theyre ten swayed expediency Smart builders discover better ways make airplanes Theyve also learned gener ally bigger better Perhaps Control Line manufacturers back Fifties figured smaller mod els would cheaper produce could fly Just barely small airplane syndrome rani pant throughout industry 15-size kits little bigger current AA Com bat models fact some todays 15 kits make excellent models Combat fliers have probably made advances performance other group Its populous cate gory flying Combat competition places high performance demands model Combat pilots experience has proven airplanes wing areas rang ing between 180-200 sq fly much bet ter have seen experimental Combat model 270-sq-in wing Though flew quite well craft too difficult build light enough Combat competi tion wasnt viable design assortment Stunters have September 1990 63 Top picture finished Stuka display Day contest modei compieted weekend before wasnt abie fiy competition because fuel capacity prob iem its powered Cox Medallion 049 engine swinging three-bladed prop Stuka weighs 10-11 oz will fly entire Stunt routine short 35-ft lines Above shot shows large inverted gull wing model paInted wIth Poliy-S plastic model paint published including some outstanding designs featured magazines time time has gained universal accept ance Part problem CL fliers have never seen really good-flying AAs no doubt recall miser able ready-to-fly models probably sin gle biggest reason people shun Control Line flying solid wood kits werent much better youve never seen small model can really carve air youve missed some exciting fly ing machine performance Heres chance catch up 37A-in wingspan 2235 sq wing area Stuka great-flying ship Im hoping will whet appetite some Control Line fliers out Stuka design influenced favorite 35-powered Stuka Stunt models created Hi Johnson back 1950s airplanes just distant cousins scaled-down version de sign wouldnt have worked AA Stunter wing far too thick tail moment arm too short scalesized fuselage AA Stuka weighs 10-11 oz powered Medallion 049 Though 35-ft linesrather short compared 42-ft norm Stunt flyingtend limit actual maneuvering area model still flies entire Stunt pattern ease wing has 155% airfoil el liptical leading edge maintains good laminar airflow high angles attack airfoil comes very successful Combat design negates need flaps other high lift/drag devices As long CG center-of-gravity properly located small elevator adequate task hand prototype built two weeks hope being able fly day contest Though completed weekend before contest fuel capacity problem couldnt sorted out time Stuka compete Three-quarter-ounce capacity just aint enough get through pattern folks Construction Wing Begin cutting rib templates aluminum Formica other hard ma terial Place eight pieces A6 balsa tween templates couple pins small nails through templates will work nicely holding things together sure nails straight wont interfere trim ribs size Place tip template leading edge behind root template leading edge align spar slots Carefully cut sand balsa outside templates cut away balsa doesnt look like rib cut spar slots Remove first set ribs repeat operation second set Square off edges shown plans Make four #3 ribs two /16 plywood Form landing gear wire shown Cut slot plywood #3 rib see plan insert gear wire make sandwich balsa #3 ribs used CyA cyano acrylate glue throughout construction Install trailing edges ribs spars four wing panels glue two #3 triple rib assemblies stalled landing gear wire yet inboard panel ribs #1 #2 must have main spar notches extended forward bring leading edge spar back parallel main spars Working upside down level trailing edge inboard panel Raise oppo site inboard tip l%2 trim center spar tips correct dihedral glue center section together Add spar joiners bellcrank floor Turn center section upright again level panels Because landing Left Close-up Stukas business end model can powered s TeeDee 049/051 Medallion 049 flies quite well three-biaded prop does better standsrd Cox 5 x 3 prop Right canopy crew bulkhead sre Guiliow Stuka kit canopy can also heat-formed built up machine gun made scrap balsa brass tubing photos Mike Kevilie 64 Model Aviation side shot shows fuselage very nearly scaie nose tail moment arms although slimmer scale deference performance Decais Guiliow kit author displaying blue belly Stuka show its relative size its consid erably larger typical Stunter Full-Size Plans Available. See Page 196 lIDS BALSA SHEETING03Z PLY SPLICESWING SHEETING MOST JGIN TOP ANS RSTSSM7IN CENTER OF TR CRIES5311K SG BALSA LEASING EDGE ESPL—— LICRANK II SANDWICH L 0___________________________ BETWEEN TAG SHEETS OF lB WING FRONT VIEWIIIKOIABALSA rIB BALSA SHEETBALSA WHEEL BESTS- 0 SHEETS B BALSA U 2 SHEETS STAILIZE~i / Ir ELEG BORN RGOT TEMPLATE INGT RIB TERHLATESRHBEEBGR 111TIP RIB---ALOM GB FORMICA TEMPLATE WING RIB DETAIL LANDING GEAR DETAIL /SOIT IS IAGOILLOW 550KG CANOPY 5132 BALSA SPRJCEANS CREW F GORES5/B BALSA SHEETIIB% 24 TOPBALSA / T RODDEH 318 BALSA SHEETC SSOPAP FILL ACETOP INGLLSWESIIA SQII SPINNERBALSA1 F-2IYSG ELEG F-I___F-S-------TRAVEL IRASI IOMITTITT APLE HOLD DOWN BLGCH lAS RU PUS HRGO IA MAPLEFOELFUSELAGE SIDE VIEWlIlA BALSA2 PIECE BALSA MSTSR MOUNTTAGSI LEFT SISE OMITTED FGR CLARITY ICOVER SJPPGHTlOAD/BTAILWHEEL FAIHING HIS BALSAMOSIC WIRE COO 549 TO EBENE BEE TESTHG BALSASHEET BOTTOMlID 0/B TAILWHEEL SRI-STOCKUBARIC HIGO CE IllS BALSA GREET BOTTOM VIEWFRONT VIEW ORG PLYIIGSG BALSAFUSELAGE SIDES DOUBLERSCR1- STOCIS AS DIBMAPLE I FUSELAGE TOP VIEW MOTOR MOUNTS TOP BLOCKS SMITTEB FOR CLARITY END DOVER WHEELSL B DETAIL 5130 BALSA ~PLYGREET 1F-S qznPOEL TANK HAHOWODO BLOCAIV EXTENSION FUR COWL BALDT"""W-31TF7 SEE TEUT DOWN SCREW SLOE TO TANKI MODIFIED 3/40Z FUELTANK IG3UIHS-BFROMII BALSA AGO SERUM IIIGIOLYWOUO PLO I N ALSA ITOLCINSTOLLEO IFICAT lOGS WING SPANDO-IIG WINO AREAODD 5 50 IN FOSE LENOTHOH ENGINEGAS TO PERFECT 20 SI23H5K IMODEL AVIATION STUKA STUNT DESIGNED BY BARRY BAXTER TRACING BY JOE DEMARCO ALL RIGHTS BEBERVEB US- BALSA —fl--t-AGO BETTOR ADD 110 02 WEIOST ON GASBOARD WINO 1100 BALSA OHEETISO TOP AND BOTTOM_______________________ AFTER COSTING RIB STACKS SFF GIBES BAD ENDS AS SHOWN OS B AS TEMPLATE FUR RERAINDER OP REOUIREO 3 RIBS gear wires youll have work along edge building table Raise out board tips #3 rib assem blies making sure landing gear wires parallel other perpendicular ground Trim spars lead ing trailing edges correct dihedral angle glue #3 rib assemblies wing panels together Install belicrank lead-outs pushrod Trim install inboard out board leading edge planking joins center #3 rib assembly Install tips center section planlting false trailing edges Dont forget add A-oz tip weight Fuselage Assemble right left fuse lage doublers engine mount filler blocks fuselage sides Slip sides wing add bulkheads making sure fuselage remains square centerline wing Install belly plank ing tail wheel support Install / ply baffle plate maple engine mount bear ers drill mount install nut plates baffle plate helps direct airflow over engine through engine compart ment out through rear tank area eliminating exhaust gases flowing through engine compartment Experience has shown air does always flow well intake behind spinner cowl clear airflow through compartment Stabilizer elevatorE rudder Con struction simple straightfor ward Install stabilizer elevator set up control system Elevator up-anddown travel 30 B adequate desired can install pushrod end ac cess door below stabilizer although has proven bit weak spot Install upper fuselage blocks rud der Build install wheels wheel pants tail wheel canopy crew decals came Guillow Stuka kit canopy could formed over wood block canopy material heated oven could cut bent flat sheet wheel pants Gulllow Stuka kit could also modified short ened used Covering finishing original covered preprimed Micafilm painted Polly S acrylic plastic model paint over automotive primer sealed coat Black Baron clear worked well authentic colors available hobby shops carry plastic models 1 %-oz fuel tank built adding section Perfect #20 tank rear tank cap removed piece 010 tin bent shape tank inserted its end original end cap reattached tank replumbed Uniflow shown block hardwood glued tank act anchor cowl mount ing screw sure screw isnt long penetrates tank Flying Balance model shown original required oz lead nose will groove well still have crisp re sponse square corners Loops require 25-30 B elevation accomplish leaving plenty room fly through 45 B pat tern maneuvers prototype powered stock Cox Medallion found 5 x 3 black Cox prop quite efficient couple hints may order assist operating Cox rotary-valve engines Replace stock needle valve Tee Dees fine-thread version available Dale Kirn 283 N Spruce Dr Ana heim CA 92805 Kustom Krafts manship PO Box 3010 Fallbrook CA 92028 Shim cylinder until its shoulder flush piston top dead center saves plugs ensures proper port timing Shims available Kustom Kraftsmanship installation instruc tions included Before starting engines clean spraybar assembly thoroughly remove old castor oil jets especially theyve sitting couple weeks initial start will much easier youll have fewer operational hassles overall low battery can biggest frustrations flying make sure yours fresh isnt engine will pop bang resist efforts start Continued page 170 September 1990 65 SOFT BALSA BLOCK WING TIPS 020 GIA MOOC-I IllS BALSA WIRE LEADGOTS__I AR EZ BALSA TRAILING EDDE115 BALSA SHEET FLAPS couple weeks Bladder Grabber year Northeast Reglonals didnt fly Fast Combat because problem fly-aways contest held airport Eugene OR lots expensive commercial jets cruising around Its bad enough having fly-away model come rest flying areabut worse cads up area inhabited nonfliers Lets hope some can come up reliable fuel shutoff could used eventsor minimum something would destabilize model keep within confines flying area competitors ones have dodge youre thinking buying Fox Mark VI engines youd best get phone Duke Fox now current price engine $100 its available factory tel 1-501/646-1656 report have 100 engines left theyre gone. well know rest giant leap technology new Shur iken engine seems just what its 29000-rpm red line about 50% power current Cox TD 049 Look some very large models using engine ap pear sometime soon word got manufacturer tally swamped orders little jewel about $200 copy fast guys going going faster will difficult fly current 35-ft lines may forced move up 42 ft Somebody asked thought best Combat pilot world US have legend Riley Wooten Joining very elite group would guys like Richard Stubblefield Howard Rush entertaining watch doesnt win have whole bunch top-notch fliers category too close callpeople like Fluker Cleveland McFad den mention twin terrors John Stubblefield Michael WilIcox Theres bunch foreigners deserve try out worlds finest too British have Richard Evans Dave Wood Mick Tiernan always-tough Mr Vernon Hunt about Soviet stars like Doroshenko Beliaev Necheutkhinand reigning World Champion Fai xov No list would complete Wak kermans Fred Meyer remember Ostemans performance 1984 World Champs John Madden can have all-American team should entitled all-world team Maybe after next World Champs Ill give some thought may safer pick people have already retired Stuka Stunt/Baxter Continued page 65 Maybe want weekend flier Maybe want model thatll leave smile face AA day con tests arrive maybe want both Off contest trail Stuka guaran teed unusual AA Stunt ships aroundand ablest fliers designed win USFFC/Oldenkamp Continued page 69 Mother Natures support system pre vailed well late afternoon Two very significant records established Paul Herbst broke 1984 P-30 mark record 3008 spite being away chase best two hours day weakened crack six-minute flight barrier oldest stan dards Bobby Morgans 3109 Junior Gas 1977 fell newcomer JonMark Carman 4049 Finally Terry Thorkildsen copped Ocie Randall High Time Gas Trophy posting 6918 just shy own record category Model Aviation plan Astrostar Out standing climaxes great day As dusk approached us out test sport fly eye toward night session Sundays bigger slate Dark scud horizon announced change weather Some periodic dust cells blew through temperature droppedbut before author man aged sacrifice brand-new Wakefield BoomBox IV violent thermal literContinued page 174 EI Amount lock No DescriptionPrice III Toorder HI II HoI3lwIm3Iw NTRNAIIOHAI INC IERICANHANDLING CHARGESub Total EXPIESCredit Card order7l% Tax TN Only Check wIth order orI order ~$490Handling COD Order TOTALIblank Name 1* Street Address CityStateZipI call EMasterCard EVisa DAmerExp Exp Date615 Card No ElShip CODJMy Check enclosed $I nrn El 170 Model Aviation ma Name Street Addreas City State Zip
Edition: Model Aviation - 1990/09
Page Numbers: 63, 64, 65, 170
Larger average Stunter still compact somewhat-scale Stuka its 37-in-span 223-sq-in wing real performer Its quite competitive tons fun fly U Barry Baxter IN THE EYES fledgling modelers kit manufacturers indisputable ex perts model design standards After youre going invest time capital building models youre certainly go ing make sure theyre thoroughly tested deliver best possible per formance Surely kit companies wouldnt produce second-rate equipmentor would average beginner unquestioningly sumes manufacturers have proven products through hours flight testing buys kit takes faith hes getting best performance attainable particular type model Ergo kit companies build models 18to 24-in wingspans must cor rect size airplanes right Heaven forbid should question commer cial arbiters considering anything wing area excess 120 sq little time hobby usually suffi cient destroy illusion Manufacturers dont have answers theyre ten swayed expediency Smart builders discover better ways make airplanes Theyve also learned gener ally bigger better Perhaps Control Line manufacturers back Fifties figured smaller mod els would cheaper produce could fly Just barely small airplane syndrome rani pant throughout industry 15-size kits little bigger current AA Com bat models fact some todays 15 kits make excellent models Combat fliers have probably made advances performance other group Its populous cate gory flying Combat competition places high performance demands model Combat pilots experience has proven airplanes wing areas rang ing between 180-200 sq fly much bet ter have seen experimental Combat model 270-sq-in wing Though flew quite well craft too difficult build light enough Combat competi tion wasnt viable design assortment Stunters have September 1990 63 Top picture finished Stuka display Day contest modei compieted weekend before wasnt abie fiy competition because fuel capacity prob iem its powered Cox Medallion 049 engine swinging three-bladed prop Stuka weighs 10-11 oz will fly entire Stunt routine short 35-ft lines Above shot shows large inverted gull wing model paInted wIth Poliy-S plastic model paint published including some outstanding designs featured magazines time time has gained universal accept ance Part problem CL fliers have never seen really good-flying AAs no doubt recall miser able ready-to-fly models probably sin gle biggest reason people shun Control Line flying solid wood kits werent much better youve never seen small model can really carve air youve missed some exciting fly ing machine performance Heres chance catch up 37A-in wingspan 2235 sq wing area Stuka great-flying ship Im hoping will whet appetite some Control Line fliers out Stuka design influenced favorite 35-powered Stuka Stunt models created Hi Johnson back 1950s airplanes just distant cousins scaled-down version de sign wouldnt have worked AA Stunter wing far too thick tail moment arm too short scalesized fuselage AA Stuka weighs 10-11 oz powered Medallion 049 Though 35-ft linesrather short compared 42-ft norm Stunt flyingtend limit actual maneuvering area model still flies entire Stunt pattern ease wing has 155% airfoil el liptical leading edge maintains good laminar airflow high angles attack airfoil comes very successful Combat design negates need flaps other high lift/drag devices As long CG center-of-gravity properly located small elevator adequate task hand prototype built two weeks hope being able fly day contest Though completed weekend before contest fuel capacity problem couldnt sorted out time Stuka compete Three-quarter-ounce capacity just aint enough get through pattern folks Construction Wing Begin cutting rib templates aluminum Formica other hard ma terial Place eight pieces A6 balsa tween templates couple pins small nails through templates will work nicely holding things together sure nails straight wont interfere trim ribs size Place tip template leading edge behind root template leading edge align spar slots Carefully cut sand balsa outside templates cut away balsa doesnt look like rib cut spar slots Remove first set ribs repeat operation second set Square off edges shown plans Make four #3 ribs two /16 plywood Form landing gear wire shown Cut slot plywood #3 rib see plan insert gear wire make sandwich balsa #3 ribs used CyA cyano acrylate glue throughout construction Install trailing edges ribs spars four wing panels glue two #3 triple rib assemblies stalled landing gear wire yet inboard panel ribs #1 #2 must have main spar notches extended forward bring leading edge spar back parallel main spars Working upside down level trailing edge inboard panel Raise oppo site inboard tip l%2 trim center spar tips correct dihedral glue center section together Add spar joiners bellcrank floor Turn center section upright again level panels Because landing Left Close-up Stukas business end model can powered s TeeDee 049/051 Medallion 049 flies quite well three-biaded prop does better standsrd Cox 5 x 3 prop Right canopy crew bulkhead sre Guiliow Stuka kit canopy can also heat-formed built up machine gun made scrap balsa brass tubing photos Mike Kevilie 64 Model Aviation side shot shows fuselage very nearly scaie nose tail moment arms although slimmer scale deference performance Decais Guiliow kit author displaying blue belly Stuka show its relative size its consid erably larger typical Stunter Full-Size Plans Available. See Page 196 lIDS BALSA SHEETING03Z PLY SPLICESWING SHEETING MOST JGIN TOP ANS RSTSSM7IN CENTER OF TR CRIES5311K SG BALSA LEASING EDGE ESPL—— LICRANK II SANDWICH L 0___________________________ BETWEEN TAG SHEETS OF lB WING FRONT VIEWIIIKOIABALSA rIB BALSA SHEETBALSA WHEEL BESTS- 0 SHEETS B BALSA U 2 SHEETS STAILIZE~i / Ir ELEG BORN RGOT TEMPLATE INGT RIB TERHLATESRHBEEBGR 111TIP RIB---ALOM GB FORMICA TEMPLATE WING RIB DETAIL LANDING GEAR DETAIL /SOIT IS IAGOILLOW 550KG CANOPY 5132 BALSA SPRJCEANS CREW F GORES5/B BALSA SHEETIIB% 24 TOPBALSA / T RODDEH 318 BALSA SHEETC SSOPAP FILL ACETOP INGLLSWESIIA SQII SPINNERBALSA1 F-2IYSG ELEG F-I___F-S-------TRAVEL IRASI IOMITTITT APLE HOLD DOWN BLGCH lAS RU PUS HRGO IA MAPLEFOELFUSELAGE SIDE VIEWlIlA BALSA2 PIECE BALSA MSTSR MOUNTTAGSI LEFT SISE OMITTED FGR CLARITY ICOVER SJPPGHTlOAD/BTAILWHEEL FAIHING HIS BALSAMOSIC WIRE COO 549 TO EBENE BEE TESTHG BALSASHEET BOTTOMlID 0/B TAILWHEEL SRI-STOCKUBARIC HIGO CE IllS BALSA GREET BOTTOM VIEWFRONT VIEW ORG PLYIIGSG BALSAFUSELAGE SIDES DOUBLERSCR1- STOCIS AS DIBMAPLE I FUSELAGE TOP VIEW MOTOR MOUNTS TOP BLOCKS SMITTEB FOR CLARITY END DOVER WHEELSL B DETAIL 5130 BALSA ~PLYGREET 1F-S qznPOEL TANK HAHOWODO BLOCAIV EXTENSION FUR COWL BALDT"""W-31TF7 SEE TEUT DOWN SCREW SLOE TO TANKI MODIFIED 3/40Z FUELTANK IG3UIHS-BFROMII BALSA AGO SERUM IIIGIOLYWOUO PLO I N ALSA ITOLCINSTOLLEO IFICAT lOGS WING SPANDO-IIG WINO AREAODD 5 50 IN FOSE LENOTHOH ENGINEGAS TO PERFECT 20 SI23H5K IMODEL AVIATION STUKA STUNT DESIGNED BY BARRY BAXTER TRACING BY JOE DEMARCO ALL RIGHTS BEBERVEB US- BALSA —fl--t-AGO BETTOR ADD 110 02 WEIOST ON GASBOARD WINO 1100 BALSA OHEETISO TOP AND BOTTOM_______________________ AFTER COSTING RIB STACKS SFF GIBES BAD ENDS AS SHOWN OS B AS TEMPLATE FUR RERAINDER OP REOUIREO 3 RIBS gear wires youll have work along edge building table Raise out board tips #3 rib assem blies making sure landing gear wires parallel other perpendicular ground Trim spars lead ing trailing edges correct dihedral angle glue #3 rib assemblies wing panels together Install belicrank lead-outs pushrod Trim install inboard out board leading edge planking joins center #3 rib assembly Install tips center section planlting false trailing edges Dont forget add A-oz tip weight Fuselage Assemble right left fuse lage doublers engine mount filler blocks fuselage sides Slip sides wing add bulkheads making sure fuselage remains square centerline wing Install belly plank ing tail wheel support Install / ply baffle plate maple engine mount bear ers drill mount install nut plates baffle plate helps direct airflow over engine through engine compart ment out through rear tank area eliminating exhaust gases flowing through engine compartment Experience has shown air does always flow well intake behind spinner cowl clear airflow through compartment Stabilizer elevatorE rudder Con struction simple straightfor ward Install stabilizer elevator set up control system Elevator up-anddown travel 30 B adequate desired can install pushrod end ac cess door below stabilizer although has proven bit weak spot Install upper fuselage blocks rud der Build install wheels wheel pants tail wheel canopy crew decals came Guillow Stuka kit canopy could formed over wood block canopy material heated oven could cut bent flat sheet wheel pants Gulllow Stuka kit could also modified short ened used Covering finishing original covered preprimed Micafilm painted Polly S acrylic plastic model paint over automotive primer sealed coat Black Baron clear worked well authentic colors available hobby shops carry plastic models 1 %-oz fuel tank built adding section Perfect #20 tank rear tank cap removed piece 010 tin bent shape tank inserted its end original end cap reattached tank replumbed Uniflow shown block hardwood glued tank act anchor cowl mount ing screw sure screw isnt long penetrates tank Flying Balance model shown original required oz lead nose will groove well still have crisp re sponse square corners Loops require 25-30 B elevation accomplish leaving plenty room fly through 45 B pat tern maneuvers prototype powered stock Cox Medallion found 5 x 3 black Cox prop quite efficient couple hints may order assist operating Cox rotary-valve engines Replace stock needle valve Tee Dees fine-thread version available Dale Kirn 283 N Spruce Dr Ana heim CA 92805 Kustom Krafts manship PO Box 3010 Fallbrook CA 92028 Shim cylinder until its shoulder flush piston top dead center saves plugs ensures proper port timing Shims available Kustom Kraftsmanship installation instruc tions included Before starting engines clean spraybar assembly thoroughly remove old castor oil jets especially theyve sitting couple weeks initial start will much easier youll have fewer operational hassles overall low battery can biggest frustrations flying make sure yours fresh isnt engine will pop bang resist efforts start Continued page 170 September 1990 65 SOFT BALSA BLOCK WING TIPS 020 GIA MOOC-I IllS BALSA WIRE LEADGOTS__I AR EZ BALSA TRAILING EDDE115 BALSA SHEET FLAPS couple weeks Bladder Grabber year Northeast Reglonals didnt fly Fast Combat because problem fly-aways contest held airport Eugene OR lots expensive commercial jets cruising around Its bad enough having fly-away model come rest flying areabut worse cads up area inhabited nonfliers Lets hope some can come up reliable fuel shutoff could used eventsor minimum something would destabilize model keep within confines flying area competitors ones have dodge youre thinking buying Fox Mark VI engines youd best get phone Duke Fox now current price engine $100 its available factory tel 1-501/646-1656 report have 100 engines left theyre gone. well know rest giant leap technology new Shur iken engine seems just what its 29000-rpm red line about 50% power current Cox TD 049 Look some very large models using engine ap pear sometime soon word got manufacturer tally swamped orders little jewel about $200 copy fast guys going going faster will difficult fly current 35-ft lines may forced move up 42 ft Somebody asked thought best Combat pilot world US have legend Riley Wooten Joining very elite group would guys like Richard Stubblefield Howard Rush entertaining watch doesnt win have whole bunch top-notch fliers category too close callpeople like Fluker Cleveland McFad den mention twin terrors John Stubblefield Michael WilIcox Theres bunch foreigners deserve try out worlds finest too British have Richard Evans Dave Wood Mick Tiernan always-tough Mr Vernon Hunt about Soviet stars like Doroshenko Beliaev Necheutkhinand reigning World Champion Fai xov No list would complete Wak kermans Fred Meyer remember Ostemans performance 1984 World Champs John Madden can have all-American team should entitled all-world team Maybe after next World Champs Ill give some thought may safer pick people have already retired Stuka Stunt/Baxter Continued page 65 Maybe want weekend flier Maybe want model thatll leave smile face AA day con tests arrive maybe want both Off contest trail Stuka guaran teed unusual AA Stunt ships aroundand ablest fliers designed win USFFC/Oldenkamp Continued page 69 Mother Natures support system pre vailed well late afternoon Two very significant records established Paul Herbst broke 1984 P-30 mark record 3008 spite being away chase best two hours day weakened crack six-minute flight barrier oldest stan dards Bobby Morgans 3109 Junior Gas 1977 fell newcomer JonMark Carman 4049 Finally Terry Thorkildsen copped Ocie Randall High Time Gas Trophy posting 6918 just shy own record category Model Aviation plan Astrostar Out standing climaxes great day As dusk approached us out test sport fly eye toward night session Sundays bigger slate Dark scud horizon announced change weather Some periodic dust cells blew through temperature droppedbut before author man aged sacrifice brand-new Wakefield BoomBox IV violent thermal literContinued page 174 EI Amount lock No DescriptionPrice III Toorder HI II HoI3lwIm3Iw NTRNAIIOHAI INC IERICANHANDLING CHARGESub Total EXPIESCredit Card order7l% Tax TN Only Check wIth order orI order ~$490Handling COD Order TOTALIblank Name 1* Street Address CityStateZipI call EMasterCard EVisa DAmerExp Exp Date615 Card No ElShip CODJMy Check enclosed $I nrn El 170 Model Aviation ma Name Street Addreas City State Zip
Edition: Model Aviation - 1990/09
Page Numbers: 63, 64, 65, 170
Larger average Stunter still compact somewhat-scale Stuka its 37-in-span 223-sq-in wing real performer Its quite competitive tons fun fly U Barry Baxter IN THE EYES fledgling modelers kit manufacturers indisputable ex perts model design standards After youre going invest time capital building models youre certainly go ing make sure theyre thoroughly tested deliver best possible per formance Surely kit companies wouldnt produce second-rate equipmentor would average beginner unquestioningly sumes manufacturers have proven products through hours flight testing buys kit takes faith hes getting best performance attainable particular type model Ergo kit companies build models 18to 24-in wingspans must cor rect size airplanes right Heaven forbid should question commer cial arbiters considering anything wing area excess 120 sq little time hobby usually suffi cient destroy illusion Manufacturers dont have answers theyre ten swayed expediency Smart builders discover better ways make airplanes Theyve also learned gener ally bigger better Perhaps Control Line manufacturers back Fifties figured smaller mod els would cheaper produce could fly Just barely small airplane syndrome rani pant throughout industry 15-size kits little bigger current AA Com bat models fact some todays 15 kits make excellent models Combat fliers have probably made advances performance other group Its populous cate gory flying Combat competition places high performance demands model Combat pilots experience has proven airplanes wing areas rang ing between 180-200 sq fly much bet ter have seen experimental Combat model 270-sq-in wing Though flew quite well craft too difficult build light enough Combat competi tion wasnt viable design assortment Stunters have September 1990 63 Top picture finished Stuka display Day contest modei compieted weekend before wasnt abie fiy competition because fuel capacity prob iem its powered Cox Medallion 049 engine swinging three-bladed prop Stuka weighs 10-11 oz will fly entire Stunt routine short 35-ft lines Above shot shows large inverted gull wing model paInted wIth Poliy-S plastic model paint published including some outstanding designs featured magazines time time has gained universal accept ance Part problem CL fliers have never seen really good-flying AAs no doubt recall miser able ready-to-fly models probably sin gle biggest reason people shun Control Line flying solid wood kits werent much better youve never seen small model can really carve air youve missed some exciting fly ing machine performance Heres chance catch up 37A-in wingspan 2235 sq wing area Stuka great-flying ship Im hoping will whet appetite some Control Line fliers out Stuka design influenced favorite 35-powered Stuka Stunt models created Hi Johnson back 1950s airplanes just distant cousins scaled-down version de sign wouldnt have worked AA Stunter wing far too thick tail moment arm too short scalesized fuselage AA Stuka weighs 10-11 oz powered Medallion 049 Though 35-ft linesrather short compared 42-ft norm Stunt flyingtend limit actual maneuvering area model still flies entire Stunt pattern ease wing has 155% airfoil el liptical leading edge maintains good laminar airflow high angles attack airfoil comes very successful Combat design negates need flaps other high lift/drag devices As long CG center-of-gravity properly located small elevator adequate task hand prototype built two weeks hope being able fly day contest Though completed weekend before contest fuel capacity problem couldnt sorted out time Stuka compete Three-quarter-ounce capacity just aint enough get through pattern folks Construction Wing Begin cutting rib templates aluminum Formica other hard ma terial Place eight pieces A6 balsa tween templates couple pins small nails through templates will work nicely holding things together sure nails straight wont interfere trim ribs size Place tip template leading edge behind root template leading edge align spar slots Carefully cut sand balsa outside templates cut away balsa doesnt look like rib cut spar slots Remove first set ribs repeat operation second set Square off edges shown plans Make four #3 ribs two /16 plywood Form landing gear wire shown Cut slot plywood #3 rib see plan insert gear wire make sandwich balsa #3 ribs used CyA cyano acrylate glue throughout construction Install trailing edges ribs spars four wing panels glue two #3 triple rib assemblies stalled landing gear wire yet inboard panel ribs #1 #2 must have main spar notches extended forward bring leading edge spar back parallel main spars Working upside down level trailing edge inboard panel Raise oppo site inboard tip l%2 trim center spar tips correct dihedral glue center section together Add spar joiners bellcrank floor Turn center section upright again level panels Because landing Left Close-up Stukas business end model can powered s TeeDee 049/051 Medallion 049 flies quite well three-biaded prop does better standsrd Cox 5 x 3 prop Right canopy crew bulkhead sre Guiliow Stuka kit canopy can also heat-formed built up machine gun made scrap balsa brass tubing photos Mike Kevilie 64 Model Aviation side shot shows fuselage very nearly scaie nose tail moment arms although slimmer scale deference performance Decais Guiliow kit author displaying blue belly Stuka show its relative size its consid erably larger typical Stunter Full-Size Plans Available. See Page 196 lIDS BALSA SHEETING03Z PLY SPLICESWING SHEETING MOST JGIN TOP ANS RSTSSM7IN CENTER OF TR CRIES5311K SG BALSA LEASING EDGE ESPL—— LICRANK II SANDWICH L 0___________________________ BETWEEN TAG SHEETS OF lB WING FRONT VIEWIIIKOIABALSA rIB BALSA SHEETBALSA WHEEL BESTS- 0 SHEETS B BALSA U 2 SHEETS STAILIZE~i / Ir ELEG BORN RGOT TEMPLATE INGT RIB TERHLATESRHBEEBGR 111TIP RIB---ALOM GB FORMICA TEMPLATE WING RIB DETAIL LANDING GEAR DETAIL /SOIT IS IAGOILLOW 550KG CANOPY 5132 BALSA SPRJCEANS CREW F GORES5/B BALSA SHEETIIB% 24 TOPBALSA / T RODDEH 318 BALSA SHEETC SSOPAP FILL ACETOP INGLLSWESIIA SQII SPINNERBALSA1 F-2IYSG ELEG F-I___F-S-------TRAVEL IRASI IOMITTITT APLE HOLD DOWN BLGCH lAS RU PUS HRGO IA MAPLEFOELFUSELAGE SIDE VIEWlIlA BALSA2 PIECE BALSA MSTSR MOUNTTAGSI LEFT SISE OMITTED FGR CLARITY ICOVER SJPPGHTlOAD/BTAILWHEEL FAIHING HIS BALSAMOSIC WIRE COO 549 TO EBENE BEE TESTHG BALSASHEET BOTTOMlID 0/B TAILWHEEL SRI-STOCKUBARIC HIGO CE IllS BALSA GREET BOTTOM VIEWFRONT VIEW ORG PLYIIGSG BALSAFUSELAGE SIDES DOUBLERSCR1- STOCIS AS DIBMAPLE I FUSELAGE TOP VIEW MOTOR MOUNTS TOP BLOCKS SMITTEB FOR CLARITY END DOVER WHEELSL B DETAIL 5130 BALSA ~PLYGREET 1F-S qznPOEL TANK HAHOWODO BLOCAIV EXTENSION FUR COWL BALDT"""W-31TF7 SEE TEUT DOWN SCREW SLOE TO TANKI MODIFIED 3/40Z FUELTANK IG3UIHS-BFROMII BALSA AGO SERUM IIIGIOLYWOUO PLO I N ALSA ITOLCINSTOLLEO IFICAT lOGS WING SPANDO-IIG WINO AREAODD 5 50 IN FOSE LENOTHOH ENGINEGAS TO PERFECT 20 SI23H5K IMODEL AVIATION STUKA STUNT DESIGNED BY BARRY BAXTER TRACING BY JOE DEMARCO ALL RIGHTS BEBERVEB US- BALSA —fl--t-AGO BETTOR ADD 110 02 WEIOST ON GASBOARD WINO 1100 BALSA OHEETISO TOP AND BOTTOM_______________________ AFTER COSTING RIB STACKS SFF GIBES BAD ENDS AS SHOWN OS B AS TEMPLATE FUR RERAINDER OP REOUIREO 3 RIBS gear wires youll have work along edge building table Raise out board tips #3 rib assem blies making sure landing gear wires parallel other perpendicular ground Trim spars lead ing trailing edges correct dihedral angle glue #3 rib assemblies wing panels together Install belicrank lead-outs pushrod Trim install inboard out board leading edge planking joins center #3 rib assembly Install tips center section planlting false trailing edges Dont forget add A-oz tip weight Fuselage Assemble right left fuse lage doublers engine mount filler blocks fuselage sides Slip sides wing add bulkheads making sure fuselage remains square centerline wing Install belly plank ing tail wheel support Install / ply baffle plate maple engine mount bear ers drill mount install nut plates baffle plate helps direct airflow over engine through engine compart ment out through rear tank area eliminating exhaust gases flowing through engine compartment Experience has shown air does always flow well intake behind spinner cowl clear airflow through compartment Stabilizer elevatorE rudder Con struction simple straightfor ward Install stabilizer elevator set up control system Elevator up-anddown travel 30 B adequate desired can install pushrod end ac cess door below stabilizer although has proven bit weak spot Install upper fuselage blocks rud der Build install wheels wheel pants tail wheel canopy crew decals came Guillow Stuka kit canopy could formed over wood block canopy material heated oven could cut bent flat sheet wheel pants Gulllow Stuka kit could also modified short ened used Covering finishing original covered preprimed Micafilm painted Polly S acrylic plastic model paint over automotive primer sealed coat Black Baron clear worked well authentic colors available hobby shops carry plastic models 1 %-oz fuel tank built adding section Perfect #20 tank rear tank cap removed piece 010 tin bent shape tank inserted its end original end cap reattached tank replumbed Uniflow shown block hardwood glued tank act anchor cowl mount ing screw sure screw isnt long penetrates tank Flying Balance model shown original required oz lead nose will groove well still have crisp re sponse square corners Loops require 25-30 B elevation accomplish leaving plenty room fly through 45 B pat tern maneuvers prototype powered stock Cox Medallion found 5 x 3 black Cox prop quite efficient couple hints may order assist operating Cox rotary-valve engines Replace stock needle valve Tee Dees fine-thread version available Dale Kirn 283 N Spruce Dr Ana heim CA 92805 Kustom Krafts manship PO Box 3010 Fallbrook CA 92028 Shim cylinder until its shoulder flush piston top dead center saves plugs ensures proper port timing Shims available Kustom Kraftsmanship installation instruc tions included Before starting engines clean spraybar assembly thoroughly remove old castor oil jets especially theyve sitting couple weeks initial start will much easier youll have fewer operational hassles overall low battery can biggest frustrations flying make sure yours fresh isnt engine will pop bang resist efforts start Continued page 170 September 1990 65 SOFT BALSA BLOCK WING TIPS 020 GIA MOOC-I IllS BALSA WIRE LEADGOTS__I AR EZ BALSA TRAILING EDDE115 BALSA SHEET FLAPS couple weeks Bladder Grabber year Northeast Reglonals didnt fly Fast Combat because problem fly-aways contest held airport Eugene OR lots expensive commercial jets cruising around Its bad enough having fly-away model come rest flying areabut worse cads up area inhabited nonfliers Lets hope some can come up reliable fuel shutoff could used eventsor minimum something would destabilize model keep within confines flying area competitors ones have dodge youre thinking buying Fox Mark VI engines youd best get phone Duke Fox now current price engine $100 its available factory tel 1-501/646-1656 report have 100 engines left theyre gone. well know rest giant leap technology new Shur iken engine seems just what its 29000-rpm red line about 50% power current Cox TD 049 Look some very large models using engine ap pear sometime soon word got manufacturer tally swamped orders little jewel about $200 copy fast guys going going faster will difficult fly current 35-ft lines may forced move up 42 ft Somebody asked thought best Combat pilot world US have legend Riley Wooten Joining very elite group would guys like Richard Stubblefield Howard Rush entertaining watch doesnt win have whole bunch top-notch fliers category too close callpeople like Fluker Cleveland McFad den mention twin terrors John Stubblefield Michael WilIcox Theres bunch foreigners deserve try out worlds finest too British have Richard Evans Dave Wood Mick Tiernan always-tough Mr Vernon Hunt about Soviet stars like Doroshenko Beliaev Necheutkhinand reigning World Champion Fai xov No list would complete Wak kermans Fred Meyer remember Ostemans performance 1984 World Champs John Madden can have all-American team should entitled all-world team Maybe after next World Champs Ill give some thought may safer pick people have already retired Stuka Stunt/Baxter Continued page 65 Maybe want weekend flier Maybe want model thatll leave smile face AA day con tests arrive maybe want both Off contest trail Stuka guaran teed unusual AA Stunt ships aroundand ablest fliers designed win USFFC/Oldenkamp Continued page 69 Mother Natures support system pre vailed well late afternoon Two very significant records established Paul Herbst broke 1984 P-30 mark record 3008 spite being away chase best two hours day weakened crack six-minute flight barrier oldest stan dards Bobby Morgans 3109 Junior Gas 1977 fell newcomer JonMark Carman 4049 Finally Terry Thorkildsen copped Ocie Randall High Time Gas Trophy posting 6918 just shy own record category Model Aviation plan Astrostar Out standing climaxes great day As dusk approached us out test sport fly eye toward night session Sundays bigger slate Dark scud horizon announced change weather Some periodic dust cells blew through temperature droppedbut before author man aged sacrifice brand-new Wakefield BoomBox IV violent thermal literContinued page 174 EI Amount lock No DescriptionPrice III Toorder HI II HoI3lwIm3Iw NTRNAIIOHAI INC IERICANHANDLING CHARGESub Total EXPIESCredit Card order7l% Tax TN Only Check wIth order orI order ~$490Handling COD Order TOTALIblank Name 1* Street Address CityStateZipI call EMasterCard EVisa DAmerExp Exp Date615 Card No ElShip CODJMy Check enclosed $I nrn El 170 Model Aviation ma Name Street Addreas City State Zip