i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084
Edition: Model Aviation - 1978/01
Page Numbers: 53, 54, 55, 100, 101, 102
i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084
Edition: Model Aviation - 1978/01
Page Numbers: 53, 54, 55, 100, 101, 102
i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084
Edition: Model Aviation - 1978/01
Page Numbers: 53, 54, 55, 100, 101, 102
i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084
Edition: Model Aviation - 1978/01
Page Numbers: 53, 54, 55, 100, 101, 102
i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084
Edition: Model Aviation - 1978/01
Page Numbers: 53, 54, 55, 100, 101, 102
i1vv een mni anu less time flow what Cal fulfillir repared scale ma st sooner applause realism begin t inst s azines Wi arch wi imn s sake ar sc bent o selecti -sled s crai n av ho c airplane twin strating flat operation wc can achieve 111 eds building ti east coast modele large ma son Wilmington Large models *pite seam strang intest mood text cv fivin gear nosing 54 mSig kitc Inverted scale ing o 23G comi m E I sure spins freely both ways c Could bad bearing usually noted because clicks rotated sure bearing clean before deciding re place Connecting Rod basic check make sure hole bottom end chamfered both ends Sometimes rods will rub forward against crankshaft bushing hole rod will inter fere small radius ground between crankpin crankdisc chamfer should establish clearance inter section Piston/Sleeve three basic types lapped lapped ABC ringed piston treated differently although basic goal same round sleeve bore little no taper above exhaust port matched round piston ring has adequate clearance before run ning have observed engines run tight new place stress connect ing rods bearings wristpin/piston fits etc results reduced maximum per formance broken dont mean cant run engine prior fitting provided undue stress placed operating parts during process procedure ensures stress-free break-in Lapped Piston Regardless whether clean piston will pass freely through sleeve use duPont rubbing compound Smear light coating piston sleeve lap piston using connect ing rod move piston sleeve piston laps smoothly drag throughout bore clean thoroughly examine sleeve care fully under bright light shiny spots usually occur around port areas sometimes below ports sleeve has warped Continue lapping cleaning examining until sleeve has uni formly matte-finished bore clean parts very carefully solvent tooth brush until can wipe surface white cotton sheet come clean same above believe proper pis ton/sleeve clearance essential before running experience indicates too-tight fit will result harder piston pushing brass sleeve deforming necessary achieve running fit have unable extract maximum perform ance happens Its difficult de termine exact clearance required prior running lap free run engine carefully briefly Remove head carefully examine chrome surface sleeve observe extra shiny areas especially top stroke fit still tight Extra lapping special proce dures such honing machine lapping can used correct problem Ringed Piston piston ring utmost importance must absolutely round have small gap possible remain round installed piston conditions exception rather rule basic problem establish perfectly round paralleled bore sleeve Since dont have piston lap can take chance having true sleeve make lap cant machine shop can machine bar brass aluminum bare slip fit sleeve Given true sleeve smear light coat compound sleeve place rings between two piston skirts similar tight fitting cylinders lap rings sleeve Lap little first clean examine ring rubbing surface polish Lap until truly important small ring gap round ring will develop power regardless gap size final test push ring sleeve squarely hold up product review product review product review Wing Cutout Tool better mousetrap cate gory Groovers provide effective answer nuisance problem cutting out foam ser vos landing gear retract wells ailerons torque tubes etc Preformed wire cutters fit gun-type soldering irons Die-cut templates includedl make such chores snap Anon Enterprises also offers over 60 different foam wing cores almost popular RC ma chine can think including flying lawnmower molded wheels Firm has over 500 plans templates will quote plan Also has Doods nylon mounting bolt sets speed wrench threaded wood block Anion Enterprises PO Box 337 Hwy 56 West Edgerton KS 66021 Lapped ABC procedure essentially product review product review product review light look signs light between ring sleeve No light round ring Install ring piston carefully Cylinder Sleeve Ive always put dab compound under lip sleeve rotated crankcase sure lower surface sleeve lip matched mating surface top case Cylinder Head Same above dab compound mate both surfaces regard less gasket may supplied engine careful lap head bore surface sleeve tight fit tween head sleeve essential Back Cover Lap back cover rear mating surface case Cleaning Assembly Recheck parts sure absolutely clean Oil lightly 3-in-l oil assemble engine Tighten opposite screws little time turn crankshaft after part installed sure finally put glow plug flip prop will know difference engine will loose compression seal will surprise Final Examination Wipe external sur faces clean look signs oil leaking past sealing surfaces everything okay store engine plastic bag until ready run test stand Conclusion Development basic skills preparing engine run essen tial discussion intended get modelers started dont already pre pare engines will enjoy acquiring skills needed understand seemingly small details have substantial effect engine performance Next month well run engine test stand Don Jehlik 438A Schweer Dr Star Route 1 Hawthorne NV 89415 Scale Model/Preston continued page 55 falls napalm types excepted expect score 10 points Another scale operation may think dead giveaway operation flaps have received both tens zeros flap demonstrations Monocoupe zero awarded judge claimed able see flaps move during flight after cycled down up four times during flight takeoff missed approach separate flap demo landing am now reluctant use flaps option still use landings since trim change nose up advantageous keeping model nosing over during landing though may elect use flaps lieu flying maneuver may 100 Model Aviation FAMOUS BRITISH DIESELS D/C PAW M/E rj * *NEW* * CATALOG-DIESEL HANDBOOK $150 pp HOBBY HIDEAWAY DELAVANILL61734 MORRISONSCALE DRAWINGS EPLA TECHCATALOG 25c ntefl10t 01W 40500 McKenzie Hwy vida Oregon 97450 used advantage during static judging Corsair SBD Dauntless both look great sitting tarmac vast expanse flap hanging down Also like Monocoupe flaps can useful increase realism landings slowing down avoiding con trolled crash typical average sport/ pattern flier trike-gear model final comment about flying points Bear mind under present rules twin-engined model can score easy oints just having two engines would recommend however building twin first scale model Remember no flight option scores automatic maximum loss engine twin very often results loss just some flying points Another fac tor makes twin-engined model less ideal lack realism flight twin engined subjects have insuffi cient wing area enable modeler achieve desired wing loading result lead sled dazzling terms speed rather unrealistic flight per formance exception Dor nier 23G has seen skies around Washington DC recently modeler Don Srull McLean Virginia noted locally lightweight building techniques deliberately chose sub ject because huge wing thick aero foil would enable flight realistic speeds Don took third place Sport Scale 1977 Nationals model confirms choice Let us turn now static judging see what takes get good static score perfect flying model will out cold comes total points earned realistic appear ance Piper Cub whole lot easier duplicate model form B-17 same applies majority fabric dope aircraft compared metalskinned birds know no satisfactory method duplicating unpainted metal piodel short using metal itself Fortu nately majority metal-skinned air planes particularly bring waves nostalgia modelers fin ished paint However firmly believe newcomer scale modeling satisfyingly impressive finish easier achieve stick-and-string type air craft metal-skinned fin ishes forte go means build weathered P-47 rivets panel lines etc Although rule book instructs judges ignore details deemed visible flight two other wise identical models placed side side has rivet details etc other has smooth paint finish both know will get highest score important thing bear mind what can seen ten feet going judged Naked piano wire landing gear legs frequent cause lost points Similarly biplanes no bracing wires January 1978 101 will score high am static judg ing scale contest entries start maxmum points As see omitted details incorrect color markings points start deducted errors see between scale documentation model less will final static score So sure add obvi ous features show documen tation brings us subject proofof-scale documentation absence scale documentation part sev eral contestants recent scale contest made think article might some use would surprised times someone will enter con test just see model will rank against fellow modelers However same contestants will 3-view drawing will have nothing show chosen color scheme did exist full scale aircraft Without vital pieces paper judges can award craftsmanship points since can score maximum 30 points chances placing will dim Very few aircraft available model kits have subject magazine article book Model magazines constantly featuring articles about full-scale aircraft usually clude both 3-views photographs Color pictures less likely found mag azines books excep tions best proof scale source full-scale aircraft itself should present no problems Piper Cub some other aircraft proliferates local airport B-17 however likely found locally unless live Har lingen Texashome Confederate Air Force have access full-scale aircraft afternoon camera should produce necessary docu mentdtion Beware however poor film exposure discount processing colors print taken family instant camera developed local drug store may bear little resemblance actual sub ject Especially difficult photograph aircraft displayed museums lit fluor escent lights have discovered satis factory filter correct colors either daylight tungsten film used under fluo rescent lighting find own flash unit acceptable form lighting museum subject photographic presen tation used document sub ject recommend give judges minimum number pictures show major features prototype show close-ups details sure same details appear model An other reason build large scale details such venturis navigation lights fairings etc easier build large final note Take helper first scale contest Ill guarantee hands will shaking like yours product review product review product review flight line always start first flip engine wont give hint pop Count everything going wrong contest mind work out ahead time helper responsible what you will automatically prepared M acchi/Berliner continued page 52 tional ideas pretty well taken practical limits turn stretched out development period far beyond 1931 Schneider allowed British win opposition retire trophy lobby Royal Aero Club London Italians following route others attacking 3-km world speed record own ways Across Atlantic America mili tary pulled out speed race leav ing wide open civilians meant marvelous home-made machines thrilling nation National Air Races Craft like barrel-shaped GeeBee conventional Wedell Williams straining poor little hearts out trying hit 300 mph Shell Speed Dash small-time stuff men thinking terms 400 mph seaplanes 1000-hp P&W Wasps American racing scene excited mere toys compared Rolls Royce Fiat engines European counterparts using obviously needed reach strange new world 400 mph two basic routes could followed greater speed Radical air frames radical powerplants clear some major changes would have made Italians ever beat 358 mph 1900-hp Supermarine Radical racers never very suc cessful past still arent 1929 Piaggio Pc7 racer might have real record-breaker its retractable hydrofoils place pontoons never flew contemporary Savoia Marchetti 565 twin-boom affair 1000-hp engines either end central pod never de-bugged enough show its potential Still idea two engines fuse lage appealed Macchi works way combine greatly increased power limited drag singleengined airplane Together Fiat Company built type AS5 engine used previous successful seaplane racers Macchi created ultimate watercraft Macchi-Castoldi MC72 Aerodynamically just same philosophy Macchi done well past long thin fuselage minimum wings tiny windshield huge pontoons neatly faired struts sup porting powerplant another kettle fish 102 Model Aviation MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE FUEL IT FLIT IT N GO _ Other Davis Diesel Produc5a 0-Varnishing Brushes 020-60 0 Fuel Bulbs land 2 oz 1/2A Fuel Line Asst 1/4 l/2A Twin Exhaust Stax Send SASE literature - Deelee inquiries invited DIESEL CONVERTERS $995 Up 50% power 50% economy glow new fuel formula Fuel. Pt $350 Qt $500 $100 P & H f5iAsk/o ur dealer add $150 p&h L.J order direct Co nn Res add ST Davis Diesel Dewlopment Inc BOX 141 DEPT E MILFORD CT 06460 PHONE 203 877-1670 product review product review product review Prop Balancer have ever rigged pair razor blades mandrel balancing propellers welcome gadget Handy use allows balancing prop across short axis well usual long axis Can carried handily pocket use cap ends unscrewed cartridge-like case pin base set flat level surface cone piece threaded prop hole per instructions prop placed pin check balance Price $295 Du-Bro Products Inc 480 Bonner Rd Wauconda IL 60084