and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB
Edition: Model Aviation - 1979/02
Page Numbers: 46, 47, 48, 49, 103, 104, 105
and di notewoi 54 Bill Wisni mpion ucrle 15 engir 1 mph Two hampion igine except h differe Tuned r year motorcycles ow get c Ie han tuned pi resonant exfl ise pulsin2 0 induce specially shapeu ates properly of engine frequency exh speed engines oi 0I 6 mos 6 ie gases r action ed i e engil rackle Id ed mc suitable F 0 Theirridard parts wherevei marine carthe same crankcase sign vei sleeve orientationvary dimension lacement er nt intake r marine yen exhaust butterfly Ing developed thi ese K&B engines advanced produce outsta Id give exceptional ther American S arti new win pic db fron re 5gu ed t icati flu 20 tisec V COT port Ir tor HGK see proven d s Cincij Italiai J rti2rc ree C-clamps masking tape pins Allow epoxy cure pull tailpost together directly over mid-line mark CA fuselage sides top crutch Slide wing cut-out remov ing fuselage work surface Sand trim sides clearance needed pushrod stub will slide through some bending /8th sides Measure equal height wing above work surface equal distance leading edge stab Use Hobbypoxy Thixotropic epoxy attach wing accessible areas cut bulkhead 3 Temporarily tape elevator stabilizer control horn CA place Cut slot fuselage side clear heavy duty pushrod bending necessary clearance Project wing pushrod stub full up posi tion join rear pushrod 3/32 ID brass tube soldered joint Mount previously bent landing gear wire bulkhead nylon landing gear brackets Epoxy assembly onto bulkhead 2 maple bearers Plank bottom up bulkhead using CA Sheeting cross grained Remove assembly work surface Cut sand top bottom contour Position engine bearers mark drill 9/64-in holes 4 X 40 T-nuts Cut trim nose blocks clear engine attach 5-minute epoxy Cut hatch inside bulkheads sides Pencil-mark rear limit hatch onto sides reference glue a block position hatch place glue sides front perimeter around 3/16 hatch just removable por tion glue dry cut through t using marks guide razor saw Remove hatch install holddown hardware Cut bulkhead 4 turtle deck sides firm /8 sheet CA 4 crutch bevel joint sides neat fit crutch CA place Cut turtle deck clear fin Hinge elevator stab using method used classic cloth hinges Sig glue Permanently attach horn clevis adjusting neutral trimming cut-out side free movement Trim turtle deck neat fit fin epoxy fin stab slot Check right angle 900 triangle Fill voids wing-fuselage joint Thixotropic epoxy forming fillet moistened finger Sand wing fuselage members Finishing wishing authenticity should cover Silkspan Testors Hep durability beauty impor tant contemporary finishes recom mended covered wings trans parent MonoKote masking off out lines electricians tape news paper applying two coats K&B filler sanding between coats filler fine sanded #380 paper whole works sprayed two coats Perfect White Poly-urethane paint Coat tank engine areas resin epoxy fuelproofing pinstripes prototype D&J Multi-stripe numbers letters vinyl stick items office supply building model airplanes 30 years ago spinner genuine Froom definitive name spinners tanks back long since out business powerplant Atwood Triumph 49 last large bore engine bear design genius Bill wood have flown Super Duper Zilch Fox 35 Although lacking brute strength Triumph Fox adequate pull aircraft through stunt pattern Maneuvers models era somewhat different being open abrupt execution verted flight requires definite up down really elevator horizontal 8s use up lot air space Flight charac teristics delightful no vicious habits Grooving excellent did wheelrolls elder son taking photos never seen such thing Wheel-rolls part event early days hope choose con struct new improved Super Duper receive much genuine pleasure yours have Engines/Lee continued page 49 valve Schnuerle ported ringed designs Several times have mentioned bar stock engines term used literally hog new crankcase out solid chunk bar aluminum new prototype engine awful lot work make patterns core box get crankcase casting much simpler cheaper use bar stock make one-of-a-kind crankcases unu sual find large production RC engines made way line utilizes solid aluminum instead castings crankcases Profi engines imported Nelson Products manufactured West Ger come five sizes 10 176 cc 76 1265 cc Almost part engine except bearings car buretor carburetor housing machined solid metal stock wrought heat treated aluminum much stronger stable cast mater ial crankcase machined out solid aluminum aluminum cylinder jacket integral Schnuerle bypass ports screws top hardened steel liner held place conventional bar-stock squish-band head single-ringed ma chined piston utilized carburetor different since uses sliding February 1979 103 rather rotating barrel excellent engine comes complete muffler wrenches Model Rectifier Corporation imports several lines engines including Webras Enyas monster 25-cc Suevia Webra has several new Schnuerle ported engines such 109 rear ex haust 20 side exhaust large 90 RC engine Enya also has several new side exhaust Schnuerle ported engines 19X 40X 60X have very little addi tional information engines except 60X 60 has chrome plated aluminum sleeve rather brass steel lapped ringless piston used both piston sleeve made highsilicon alloy achieve matched thermal expansion will interesting see combination will give acceptable life time compared chromed brass sleeves Rossi engines imported Bills Miniature Engines Memphis Tennessee new 60 RC engine racing 60 65 have developed following world famous success racing 15 60 RC front intake Schnuerle boost ported engine racing 60 65 versions have rear exhaust rear rotary valve intake have single-ring piston rather ABC engines have already proved pow erful anything available have gained immediate acceptance success Conclusion Most design features present engines have around years always possibility some radical new development believe will large engines built some may four cycle similar new 05 60 going four cycle can make twins in-lines radial engines predict next major improvement small engines will use solid-state coatings reduce friction crease lifetime reduce amount lubrication required series propri etary coatings known sinergistic coat ings developed NASA space program coatings consist porous plating chemical treatment sur face impregnated suitable lubricant first dry self-lubricating material polytetrafluorethylene PTFE bonded anodized aluminum familiar everyone frying pans other cookwear Such bearing ma terial suitable high velocity surfaces although has used pistons limited success Graphite molybdenum sulphide have also used lubricant probably would superior model engine parts several relatively new platings may prove quite successful drastically reduce wear have used electroless nickel-boron plating alu minum piston adhesion adequate racing stress would prob ably work fine however sleeve since sleeve subjected much lower stress piston Electroless plating differs electroplating no elec trical power applied parts elec troplating negative voltage applied part immersed plating solution containing positive terminal electroless plating parts cleaned surface activated chemical solution immersed plating solution solution contains metallic ions adhere immersed metal parts Other plating coating may prove practical moving surfaces model en gines coating developed Du Pont called composite diamond coating CDC has successfully used extend lifetime drillbits extrusion dies other critical parts high-wear areas coatings contain uniform dis tribution micron-size diamond particles nickel-phosphorus matrix concen trations l0% 40% thickness less 002 inches coated parts have sometimes lasted several hundred times longer uncoated parts might possible design engine will operate no lubrication other fuel itself concludes article hope have presented information adequately clearly everyone could understand 104 Model Aviation competition apologize have neglected new data engines intentional did neglect carburetors mufflers since such should covered separate complete article Winged World/Bowers continued page 52 barnstorming During golden age years flew air races Howard Pete made home-built aircraft re built bought airplanes such Waco 10 During operations meticu lously photographed plumbed measured recorded structural details now maintains data reference files flew old Northwest Airways using Laird Speedwings friend Speed Holman Canada bush flew Bellancas re mote areas Northwest Territories such trip Ned tells picking up load mining tools several dogs pregnant Eskimo woman Enroute encountering moderate turbulence suddenly attention grabbed loud crack followed ripping noise never felt much cold air dogs started barking expectant mother began have pains amid excitement Neds assessment damages determined Bel lancas fuselage fabric torn away just behind wing almost back fin flapping breeze able maintain flight next mining station landed relief repairs ever run Eskimo named Bellanca can guess came Kragness continued work airlines including old Transcontinen tal Western later TWA leaving special assignment took him pre-war Nazi Germany through out South America During period able fly foreign aircraft names soon become house hold words Just prior World War II called active duty Army Air Corps held reserve commission Coast Artillery first military flying began operations officer after looking log book pointed North American 0-47 field told him go out brush up bit military flying took him Panama flew odd balls combat tours P-40s B-24s Pacific later Muroc Dry Lake test flying engineering Just before war ended captured enemy aircraft brought Wright Field flight evaluation engineer ing studies Kragness deeply involved laughs recalls cident ramp Wright Field captured JU 88 flown Africa brass came out inspect new prize milling around plane under wings kicking tires doing what pilots see new ma chine Major got cockpit began examining switches arm ament panel guess couldnt read German Ned recalls soon loud bang hell broke loose Major thrown switch detonated sev eral explosive bolts under wing part emergency system used rid plane certain external armament loads Bits pieces schrapnel pep pering hell out brass under wing injured awarded Purple Heart After war Kragness left service joined CAA later FAA held positions respon sibility engineering research aviation law lure cockpit came too strong returned industry active flying engineering test pilot Hayes Aircraft later Lockheed During years Kragness owned sev eral airplanes all-time favorite old surplus Vultee Vibrator BT-13 flew fun seven years re markable choice pilot has flown several hundred types ranging Curtiss flying boat Spads Howard racers Lockheed Vegas P-38s FW 190s Constellations JU 52s modern day jets Kragness went back Government 1959 Although day day responsi bilities include active flying manages remain proficient two three different aircraft types flying Beech Sierra Cessna models Kragness still manages spend hours shop pro ducing beautiful models quality seem improve builds often think active modeler individual spends spare mo ment amid much ballyhoo flying field quality model whether built himself may no real concern him admirers Significant rolls can get fast fly-past super Macho X highly active mod elers needs expression satis fied through creativity Such producing replica aircraft has some special esthetic nostalgic appeal Krag ness example BT-13 owned has subject models improvement over its predecessor As true innovator Kragness has developed re markable techniques constructing mon ocoque fuselages has applied BT has developed another clever control systems model com pletely enclosed tail conesheer genius models have flown FF RC considerable success techniques being applied other sub jects Several techniques have subject magazine articles recognition Kragness varied activities have come frequent requests services consultant time time has represented Department Justice insurance firms several large legal firms litigation regarding aircraft accidents Kragness retirement has no allure will progression another career What plans future Well Ned says big grin think Ill just what neighbors neu tered tomcat Sam does continue consult ing also other things want goes such writing about aviation model planes structing flying Beechs Cessnas local airport plans pursue other hobbies photography music use wonderful collection ma chine tools Will provide satisfaction after active years aviation asked him No replied sure hell ofa lot models want build H iperbipe/Schobloher continued page 55 plans help shape styrofoam block carving shaping sandpaper block Sand direc tion prevent chunking Out styrofoam proper type styrofoam expanded-bead polystyrene type because readily dissolvable aromatic fluids Paint foam form coat Hobbypoxy formula #2 epoxy becomes tacky lay number pieces paper handiwipes cloth-like paper towel ing over coated form block Add another coat Hobbypoxy another layer toweling final coat epoxy dry sand down epoxy un til smooth holes paper toweling comes through add coats epoxy necessary ob tain smooth cowling best time prime finish spray painting cowling dry completely satisfied finish cowling pour gasoline inside gaso line will dissolve foam leaving finFebruary 1979 105 $100PeanutNo7 Capt Page 5] Curtiss XF6C-6 MODERNISTIC MODELS PO BOX 6974 ALBUQ NM 87197 REPLA-TECHDIr JINTFRNATIONAL INC MC KENZIE HWY PLANS VIDA OREGON 974BB