maneuvers FIRST little background control line SNAPPER originated developmental platfomi exploring setup sidewinder-mounted OS 32 engine planning fly Walt Pyron P-39 design Vintage Stunt Championships-V didnt want use contest plane find answers Earlier Id tried installing OS 32 Sig Skyray found nose too flexible get reliable engine run plane flew great anyway Realizing needed full fuselage structural rigidity began scanning list plans see what adaptable wasnt looking contest performance flaps werent necessary quicker build better best solution seemed scaledup version classic 1954 /2A Snapper Rudimentary calculations showed 16 Model Aviation esize rendition 1954 112A classic perfect learning stunt U Tom Dixon Continued page 18 Silkspan-covered SNAPPER features Sig clear dope wing Pactra Formula U onThe elevator pushrod retained fuselage tail wing tips Author saved weight time using least painthorn l32 wheel collar pushrod possible Lettering custom-cut Vinylwriteexit cover /i6 balsa doubling linear dimensions would increase wingspan 48 inches wing area approximately 460 square inches made quick trip photocopy shop 200% enlargement original plan work Its much easier trace parts scale up individually better maintain airfoil section added half-ribs between main ribs Otherwise original plan unchanged general doubled original wood sizes isnt essential cant find very lightweight -in balsa stabilizer example substituting medium-weight 3/~ balsa wont make difference few words about original Half-A Snapper order Designed George Millikin 1954 model kitted Southwestern Models Tulsa Oklahoma must have built five six kid using OK Cub Cox Babe Bee 049 engines Dacron lines plane flew comfortably inverted doing loops figure eights original plans brag Snapper capable square loops doubt its relatively heavy wing loading Southwestern Models version would have lacked enough efficiency square loops larger version can perform maneuverand everything else AMA patternas long dont overload paint Two different nose arrangements shown planthe test bed system beam mounts inverted engine test bed system built two cowls permit both side-mounted inverted engine installations rear base plate Great Planes engine mount exactly square handy feature allows engine mounted down up outall using same holes firewall Most modelers probably will use arrangement includes beam mounts inverted engine because its easier build intend try flying SNAPPER engine cylinder mounted inboard no other reason settle controversy about inboard versus outboard mounting profile models Construction As models its best begin making kit parts advocate buying two sets plans Use building guide cut up other paper templates trace parts onto wood time hassle saved worth few extra dollars Plan engine mounting method decide use Great Planes mount may need order Tower Hobbies since its unlikely available hobby shops Wing Cut in wing spar piece wider sheet saw sand sizeand dead straight use method because can difficult find straight strip wood Glue first doubler spar halves Add other spar half align assembly carefully straightedge add second doubler Like spar 1A6 x 2-in trailing edge TE pieces should cut 3-inwide sheet achieve straight edges Splice TE pieces together reinforce joints backup pieces 6 sheet Cut rib templates /i6 ply stack cut 16 full ribs Cut 12 ribs half-ribs trimming shown plan Use X-Acto knife #11 blade relieve center ribs spar doublers Trim ribs center planking well see plan dont have flat pinnable building board make temporary jig two pieces balsaone measuring Left simple sliding-block lead-out adjuster permits optimum trimming see sketchThe side-mounted engine snug cowl page 20 Right Modified Smith fuel tank Vents moved get tanklend SNAPPER very clean appearance volume limited space availableand decrease drag smooth flights 18 Model Aviation A Royal 28 modified stunt performance possible engine installations needle locking collet can tightened through large hole top cowl Right Wing ribs stack cut A6 ply template Continued paRe 20 Full Size Plans Available-See Page 176 /BA / /V WING PLAN TOP VIEW il74 -Th-~4i--V - - PLT S1AABBBLSABB ARBEiBALSABATE BBEB BOA PAABL B SALT TAABTASR TABS TASAA BAA BESA TASARA SALAA BABETATTSAA5 AAAWOaELBOSBAIT LACATESTAP ABA BATTAB LI STABILIZER BESEWINGRIBPATTERN FUSELAGE TOP VIEWELEVATOR SABABB __ASPUTAOTAPAESPBATAPBAUET T1BABBBAE P3 P2 B BALSA BABATLANDING GEAR DETAIL LB TOTSFUSELAGE VIEWTAL BALTS TAIL BAAOPTIONAl MOTOR MOUNT DETRL UDDEL AVIATIGN SNAPPER BIBS TIP PLATE S LSBASST AS BALSA ESBET ABABEE BY TANS BIXAN ABASE AAAABSI TEBTEB SBm B BAT BAT SALASTEBABACA55rBAINERT PLAN CAC EPUBACA ISAPLTPLSBLABPBAABASALSABAATOALLASEBB /2 X 3 x 48 another 1 thick Both pieces must very straight Tape wing plan /2 X 3-in balsa sheet pin lower trailing edge sheet over plan Insert spar main ribs Pin assembly TE sheet positioning ribs over plan locations Check vertical alignment ribs pin tape leading edge place youTre satisfied everything well aligned glue joints adhesive choice Install half-ribs Glue forward center-section planking Unpin trailing edge sheet Epoxy /4TANLlOflKFI Fr 4-40X1/2ScrewF blind nut FiIF F /G plyF 31GX4 long1F T/ slot TOP ViEW ribs jig install top TE sheet Use slow-drying glue maintain straightness repin entire assembly until glue has set Remove assembly jig Install bellcrank mount wing tips rest center-section planking Sand leading edge smooth radius sand out other irregularities Tail surfaces simple sheet-balsa structures require little explanation caution sure omit tubing bearing wire elevator joiner youd get premature wear hinges prototype model used Sig E-Z Hinges Continued poge 52 Wingspan 48 inches Recommended engine size type OS 32 reworked stunt performance choose Variety 25- through 32-size engines Expected flying weight available Type construction Built-up Type covering/finish recommended Silkspan clear dope wing Formula U fuselage tail wing tips Iron-on plastic films also suitable Top end views sliding-block lead-out adjuster simple models benefit strategically located lead-outs 20 Model Aviation 4yAALP ROSA, 1 J2A I----A Type CL sport/stunt Epoxy Lead-outs END VIEW E3] -22---w lip plate 3 laminations 1G Center lamination cut out allow leadouts slide GET BUZZIFLY THE LANIER RC STINGER 120 Specifications Fuselage Length 48/4 Rec Engine Size 91-22 2-Stroke 120-160 4-Stroke Flying Weight II lbs up Wing Span IMAA Legal 80 Non-IMAA Legal 72 Wing Area IMAA Legal 1344 sq Non-IMAA Legal 1210 sq Radio Channels 4 Cat No 92215 Stinger 120 Features Vacuum Formed Fuselage Turtledeck Wing Fuel Tank Cover Foam Wing Balsa Spars Partial Balsa Sheeting Cap Stripping Required Parts Complete Built-up Fuselage Plywood Sides Hefty Performed Aluminum Landing Gear ABS Cowl Wheel Pants Parts Complete Built-up Tail Assembly Vacuum Formed Canopy Especially Designed First Time Giant Scale Pilot Spare Parts Available No Hardware Included Can Flown IMAA Events Phone 706/404-532-6401 900-530 EST M-F FAX 706/404-532-2163 Lanier RC PO Box 458 Oakwood GA 30566 Send SASE Free Color Catalog CL SNAPPER/Dixon Continued page 20 Fuselage This structure built two major assembliesthe engine mount doublers rest full-length sides Thus its important doublers fit wing closely properly aligned doublers have designed longer necessary aid alignment also indexed doublers indicate amount fuel tank offset required achieve equal speed runs whether engine mounted upright inverted fuel tank offset prototype model 3/ Make doublers mounts tack wing CyA cyanoacrylate glue Use triangle check squareness wing leading edge Slip rear formers over pushrod fit pushrod through hole fuselage side Slide sides up doubler assembly pull together rear check theres no built-in twisting stress before gluing Install rear formers Add slow-curing epoxy area sides join doublers Wrap nose area masking tape hold assembly place epoxy cures youre satisfied alignment go ahead glue sides wing glue has cured add top bottom planking tail wheel Slide hinged stabilizer-and-elevator assembly place connect pushrod Align assembly carefully glue place Add fin-and-rudder assembly touch-up sanding necessary Covering finishing used mediumweight silkspan Sig dope prototype model use iron-on films sure attach ribs half-ribs strengthen wing isnt sort model concourse finishjust get neat fuelproof go fly OS 32 engine reworked good stunt run Theres no need use fuel 5% nitro content propeller 10 x 6 Graupner Sixty-foot lines about right Build model fixed lead-outs ounce tip weight itll plenty good sport flying use adjustable tip weight lead-outs fine-tuning contest-level performance demands could real kick enter simple SNAPPER competition against pro-stunters might surprise people Afterthoughts Although designed SNAPPER specifically 0S 32 engine other engines would suitable fact ubiquitous Fox 35 about perfect Other candidates include old Fox 25 29 OS 28 Royal 28 Merco 29 think aspiring stunt fliers make fundamental error learning profile models Theres just no easy way make profile rigid enough good engine run profiles can reinforced extra rigidity takes work does build simple box fuselage like used SNAPPER Another excellent learning stunter thats also fully contest capable Dee Rices classic Oriental now kitted Control Line Classics Check out Fly safely quietly enjoy SNAPPER want get pleasure out stunt flying learn about consider joining PAMPA Precision Aerobatics Model Pilots Association Write organization 1019 Creek Trail Anniston AL 36206 odel Aviation iient Siow Plight Characteristics Now time renew 93
Edition: Model Aviation - 1993/01
Page Numbers: 16, 18, 20, 52
maneuvers FIRST little background control line SNAPPER originated developmental platfomi exploring setup sidewinder-mounted OS 32 engine planning fly Walt Pyron P-39 design Vintage Stunt Championships-V didnt want use contest plane find answers Earlier Id tried installing OS 32 Sig Skyray found nose too flexible get reliable engine run plane flew great anyway Realizing needed full fuselage structural rigidity began scanning list plans see what adaptable wasnt looking contest performance flaps werent necessary quicker build better best solution seemed scaledup version classic 1954 /2A Snapper Rudimentary calculations showed 16 Model Aviation esize rendition 1954 112A classic perfect learning stunt U Tom Dixon Continued page 18 Silkspan-covered SNAPPER features Sig clear dope wing Pactra Formula U onThe elevator pushrod retained fuselage tail wing tips Author saved weight time using least painthorn l32 wheel collar pushrod possible Lettering custom-cut Vinylwriteexit cover /i6 balsa doubling linear dimensions would increase wingspan 48 inches wing area approximately 460 square inches made quick trip photocopy shop 200% enlargement original plan work Its much easier trace parts scale up individually better maintain airfoil section added half-ribs between main ribs Otherwise original plan unchanged general doubled original wood sizes isnt essential cant find very lightweight -in balsa stabilizer example substituting medium-weight 3/~ balsa wont make difference few words about original Half-A Snapper order Designed George Millikin 1954 model kitted Southwestern Models Tulsa Oklahoma must have built five six kid using OK Cub Cox Babe Bee 049 engines Dacron lines plane flew comfortably inverted doing loops figure eights original plans brag Snapper capable square loops doubt its relatively heavy wing loading Southwestern Models version would have lacked enough efficiency square loops larger version can perform maneuverand everything else AMA patternas long dont overload paint Two different nose arrangements shown planthe test bed system beam mounts inverted engine test bed system built two cowls permit both side-mounted inverted engine installations rear base plate Great Planes engine mount exactly square handy feature allows engine mounted down up outall using same holes firewall Most modelers probably will use arrangement includes beam mounts inverted engine because its easier build intend try flying SNAPPER engine cylinder mounted inboard no other reason settle controversy about inboard versus outboard mounting profile models Construction As models its best begin making kit parts advocate buying two sets plans Use building guide cut up other paper templates trace parts onto wood time hassle saved worth few extra dollars Plan engine mounting method decide use Great Planes mount may need order Tower Hobbies since its unlikely available hobby shops Wing Cut in wing spar piece wider sheet saw sand sizeand dead straight use method because can difficult find straight strip wood Glue first doubler spar halves Add other spar half align assembly carefully straightedge add second doubler Like spar 1A6 x 2-in trailing edge TE pieces should cut 3-inwide sheet achieve straight edges Splice TE pieces together reinforce joints backup pieces 6 sheet Cut rib templates /i6 ply stack cut 16 full ribs Cut 12 ribs half-ribs trimming shown plan Use X-Acto knife #11 blade relieve center ribs spar doublers Trim ribs center planking well see plan dont have flat pinnable building board make temporary jig two pieces balsaone measuring Left simple sliding-block lead-out adjuster permits optimum trimming see sketchThe side-mounted engine snug cowl page 20 Right Modified Smith fuel tank Vents moved get tanklend SNAPPER very clean appearance volume limited space availableand decrease drag smooth flights 18 Model Aviation A Royal 28 modified stunt performance possible engine installations needle locking collet can tightened through large hole top cowl Right Wing ribs stack cut A6 ply template Continued paRe 20 Full Size Plans Available-See Page 176 /BA / /V WING PLAN TOP VIEW il74 -Th-~4i--V - - PLT S1AABBBLSABB ARBEiBALSABATE BBEB BOA PAABL B SALT TAABTASR TABS TASAA BAA BESA TASARA SALAA BABETATTSAA5 AAAWOaELBOSBAIT LACATESTAP ABA BATTAB LI STABILIZER BESEWINGRIBPATTERN FUSELAGE TOP VIEWELEVATOR SABABB __ASPUTAOTAPAESPBATAPBAUET T1BABBBAE P3 P2 B BALSA BABATLANDING GEAR DETAIL LB TOTSFUSELAGE VIEWTAL BALTS TAIL BAAOPTIONAl MOTOR MOUNT DETRL UDDEL AVIATIGN SNAPPER BIBS TIP PLATE S LSBASST AS BALSA ESBET ABABEE BY TANS BIXAN ABASE AAAABSI TEBTEB SBm B BAT BAT SALASTEBABACA55rBAINERT PLAN CAC EPUBACA ISAPLTPLSBLABPBAABASALSABAATOALLASEBB /2 X 3 x 48 another 1 thick Both pieces must very straight Tape wing plan /2 X 3-in balsa sheet pin lower trailing edge sheet over plan Insert spar main ribs Pin assembly TE sheet positioning ribs over plan locations Check vertical alignment ribs pin tape leading edge place youTre satisfied everything well aligned glue joints adhesive choice Install half-ribs Glue forward center-section planking Unpin trailing edge sheet Epoxy /4TANLlOflKFI Fr 4-40X1/2ScrewF blind nut FiIF F /G plyF 31GX4 long1F T/ slot TOP ViEW ribs jig install top TE sheet Use slow-drying glue maintain straightness repin entire assembly until glue has set Remove assembly jig Install bellcrank mount wing tips rest center-section planking Sand leading edge smooth radius sand out other irregularities Tail surfaces simple sheet-balsa structures require little explanation caution sure omit tubing bearing wire elevator joiner youd get premature wear hinges prototype model used Sig E-Z Hinges Continued poge 52 Wingspan 48 inches Recommended engine size type OS 32 reworked stunt performance choose Variety 25- through 32-size engines Expected flying weight available Type construction Built-up Type covering/finish recommended Silkspan clear dope wing Formula U fuselage tail wing tips Iron-on plastic films also suitable Top end views sliding-block lead-out adjuster simple models benefit strategically located lead-outs 20 Model Aviation 4yAALP ROSA, 1 J2A I----A Type CL sport/stunt Epoxy Lead-outs END VIEW E3] -22---w lip plate 3 laminations 1G Center lamination cut out allow leadouts slide GET BUZZIFLY THE LANIER RC STINGER 120 Specifications Fuselage Length 48/4 Rec Engine Size 91-22 2-Stroke 120-160 4-Stroke Flying Weight II lbs up Wing Span IMAA Legal 80 Non-IMAA Legal 72 Wing Area IMAA Legal 1344 sq Non-IMAA Legal 1210 sq Radio Channels 4 Cat No 92215 Stinger 120 Features Vacuum Formed Fuselage Turtledeck Wing Fuel Tank Cover Foam Wing Balsa Spars Partial Balsa Sheeting Cap Stripping Required Parts Complete Built-up Fuselage Plywood Sides Hefty Performed Aluminum Landing Gear ABS Cowl Wheel Pants Parts Complete Built-up Tail Assembly Vacuum Formed Canopy Especially Designed First Time Giant Scale Pilot Spare Parts Available No Hardware Included Can Flown IMAA Events Phone 706/404-532-6401 900-530 EST M-F FAX 706/404-532-2163 Lanier RC PO Box 458 Oakwood GA 30566 Send SASE Free Color Catalog CL SNAPPER/Dixon Continued page 20 Fuselage This structure built two major assembliesthe engine mount doublers rest full-length sides Thus its important doublers fit wing closely properly aligned doublers have designed longer necessary aid alignment also indexed doublers indicate amount fuel tank offset required achieve equal speed runs whether engine mounted upright inverted fuel tank offset prototype model 3/ Make doublers mounts tack wing CyA cyanoacrylate glue Use triangle check squareness wing leading edge Slip rear formers over pushrod fit pushrod through hole fuselage side Slide sides up doubler assembly pull together rear check theres no built-in twisting stress before gluing Install rear formers Add slow-curing epoxy area sides join doublers Wrap nose area masking tape hold assembly place epoxy cures youre satisfied alignment go ahead glue sides wing glue has cured add top bottom planking tail wheel Slide hinged stabilizer-and-elevator assembly place connect pushrod Align assembly carefully glue place Add fin-and-rudder assembly touch-up sanding necessary Covering finishing used mediumweight silkspan Sig dope prototype model use iron-on films sure attach ribs half-ribs strengthen wing isnt sort model concourse finishjust get neat fuelproof go fly OS 32 engine reworked good stunt run Theres no need use fuel 5% nitro content propeller 10 x 6 Graupner Sixty-foot lines about right Build model fixed lead-outs ounce tip weight itll plenty good sport flying use adjustable tip weight lead-outs fine-tuning contest-level performance demands could real kick enter simple SNAPPER competition against pro-stunters might surprise people Afterthoughts Although designed SNAPPER specifically 0S 32 engine other engines would suitable fact ubiquitous Fox 35 about perfect Other candidates include old Fox 25 29 OS 28 Royal 28 Merco 29 think aspiring stunt fliers make fundamental error learning profile models Theres just no easy way make profile rigid enough good engine run profiles can reinforced extra rigidity takes work does build simple box fuselage like used SNAPPER Another excellent learning stunter thats also fully contest capable Dee Rices classic Oriental now kitted Control Line Classics Check out Fly safely quietly enjoy SNAPPER want get pleasure out stunt flying learn about consider joining PAMPA Precision Aerobatics Model Pilots Association Write organization 1019 Creek Trail Anniston AL 36206 odel Aviation iient Siow Plight Characteristics Now time renew 93
Edition: Model Aviation - 1993/01
Page Numbers: 16, 18, 20, 52
maneuvers FIRST little background control line SNAPPER originated developmental platfomi exploring setup sidewinder-mounted OS 32 engine planning fly Walt Pyron P-39 design Vintage Stunt Championships-V didnt want use contest plane find answers Earlier Id tried installing OS 32 Sig Skyray found nose too flexible get reliable engine run plane flew great anyway Realizing needed full fuselage structural rigidity began scanning list plans see what adaptable wasnt looking contest performance flaps werent necessary quicker build better best solution seemed scaledup version classic 1954 /2A Snapper Rudimentary calculations showed 16 Model Aviation esize rendition 1954 112A classic perfect learning stunt U Tom Dixon Continued page 18 Silkspan-covered SNAPPER features Sig clear dope wing Pactra Formula U onThe elevator pushrod retained fuselage tail wing tips Author saved weight time using least painthorn l32 wheel collar pushrod possible Lettering custom-cut Vinylwriteexit cover /i6 balsa doubling linear dimensions would increase wingspan 48 inches wing area approximately 460 square inches made quick trip photocopy shop 200% enlargement original plan work Its much easier trace parts scale up individually better maintain airfoil section added half-ribs between main ribs Otherwise original plan unchanged general doubled original wood sizes isnt essential cant find very lightweight -in balsa stabilizer example substituting medium-weight 3/~ balsa wont make difference few words about original Half-A Snapper order Designed George Millikin 1954 model kitted Southwestern Models Tulsa Oklahoma must have built five six kid using OK Cub Cox Babe Bee 049 engines Dacron lines plane flew comfortably inverted doing loops figure eights original plans brag Snapper capable square loops doubt its relatively heavy wing loading Southwestern Models version would have lacked enough efficiency square loops larger version can perform maneuverand everything else AMA patternas long dont overload paint Two different nose arrangements shown planthe test bed system beam mounts inverted engine test bed system built two cowls permit both side-mounted inverted engine installations rear base plate Great Planes engine mount exactly square handy feature allows engine mounted down up outall using same holes firewall Most modelers probably will use arrangement includes beam mounts inverted engine because its easier build intend try flying SNAPPER engine cylinder mounted inboard no other reason settle controversy about inboard versus outboard mounting profile models Construction As models its best begin making kit parts advocate buying two sets plans Use building guide cut up other paper templates trace parts onto wood time hassle saved worth few extra dollars Plan engine mounting method decide use Great Planes mount may need order Tower Hobbies since its unlikely available hobby shops Wing Cut in wing spar piece wider sheet saw sand sizeand dead straight use method because can difficult find straight strip wood Glue first doubler spar halves Add other spar half align assembly carefully straightedge add second doubler Like spar 1A6 x 2-in trailing edge TE pieces should cut 3-inwide sheet achieve straight edges Splice TE pieces together reinforce joints backup pieces 6 sheet Cut rib templates /i6 ply stack cut 16 full ribs Cut 12 ribs half-ribs trimming shown plan Use X-Acto knife #11 blade relieve center ribs spar doublers Trim ribs center planking well see plan dont have flat pinnable building board make temporary jig two pieces balsaone measuring Left simple sliding-block lead-out adjuster permits optimum trimming see sketchThe side-mounted engine snug cowl page 20 Right Modified Smith fuel tank Vents moved get tanklend SNAPPER very clean appearance volume limited space availableand decrease drag smooth flights 18 Model Aviation A Royal 28 modified stunt performance possible engine installations needle locking collet can tightened through large hole top cowl Right Wing ribs stack cut A6 ply template Continued paRe 20 Full Size Plans Available-See Page 176 /BA / /V WING PLAN TOP VIEW il74 -Th-~4i--V - - PLT S1AABBBLSABB ARBEiBALSABATE BBEB BOA PAABL B SALT TAABTASR TABS TASAA BAA BESA TASARA SALAA BABETATTSAA5 AAAWOaELBOSBAIT LACATESTAP ABA BATTAB LI STABILIZER BESEWINGRIBPATTERN FUSELAGE TOP VIEWELEVATOR SABABB __ASPUTAOTAPAESPBATAPBAUET T1BABBBAE P3 P2 B BALSA BABATLANDING GEAR DETAIL LB TOTSFUSELAGE VIEWTAL BALTS TAIL BAAOPTIONAl MOTOR MOUNT DETRL UDDEL AVIATIGN SNAPPER BIBS TIP PLATE S LSBASST AS BALSA ESBET ABABEE BY TANS BIXAN ABASE AAAABSI TEBTEB SBm B BAT BAT SALASTEBABACA55rBAINERT PLAN CAC EPUBACA ISAPLTPLSBLABPBAABASALSABAATOALLASEBB /2 X 3 x 48 another 1 thick Both pieces must very straight Tape wing plan /2 X 3-in balsa sheet pin lower trailing edge sheet over plan Insert spar main ribs Pin assembly TE sheet positioning ribs over plan locations Check vertical alignment ribs pin tape leading edge place youTre satisfied everything well aligned glue joints adhesive choice Install half-ribs Glue forward center-section planking Unpin trailing edge sheet Epoxy /4TANLlOflKFI Fr 4-40X1/2ScrewF blind nut FiIF F /G plyF 31GX4 long1F T/ slot TOP ViEW ribs jig install top TE sheet Use slow-drying glue maintain straightness repin entire assembly until glue has set Remove assembly jig Install bellcrank mount wing tips rest center-section planking Sand leading edge smooth radius sand out other irregularities Tail surfaces simple sheet-balsa structures require little explanation caution sure omit tubing bearing wire elevator joiner youd get premature wear hinges prototype model used Sig E-Z Hinges Continued poge 52 Wingspan 48 inches Recommended engine size type OS 32 reworked stunt performance choose Variety 25- through 32-size engines Expected flying weight available Type construction Built-up Type covering/finish recommended Silkspan clear dope wing Formula U fuselage tail wing tips Iron-on plastic films also suitable Top end views sliding-block lead-out adjuster simple models benefit strategically located lead-outs 20 Model Aviation 4yAALP ROSA, 1 J2A I----A Type CL sport/stunt Epoxy Lead-outs END VIEW E3] -22---w lip plate 3 laminations 1G Center lamination cut out allow leadouts slide GET BUZZIFLY THE LANIER RC STINGER 120 Specifications Fuselage Length 48/4 Rec Engine Size 91-22 2-Stroke 120-160 4-Stroke Flying Weight II lbs up Wing Span IMAA Legal 80 Non-IMAA Legal 72 Wing Area IMAA Legal 1344 sq Non-IMAA Legal 1210 sq Radio Channels 4 Cat No 92215 Stinger 120 Features Vacuum Formed Fuselage Turtledeck Wing Fuel Tank Cover Foam Wing Balsa Spars Partial Balsa Sheeting Cap Stripping Required Parts Complete Built-up Fuselage Plywood Sides Hefty Performed Aluminum Landing Gear ABS Cowl Wheel Pants Parts Complete Built-up Tail Assembly Vacuum Formed Canopy Especially Designed First Time Giant Scale Pilot Spare Parts Available No Hardware Included Can Flown IMAA Events Phone 706/404-532-6401 900-530 EST M-F FAX 706/404-532-2163 Lanier RC PO Box 458 Oakwood GA 30566 Send SASE Free Color Catalog CL SNAPPER/Dixon Continued page 20 Fuselage This structure built two major assembliesthe engine mount doublers rest full-length sides Thus its important doublers fit wing closely properly aligned doublers have designed longer necessary aid alignment also indexed doublers indicate amount fuel tank offset required achieve equal speed runs whether engine mounted upright inverted fuel tank offset prototype model 3/ Make doublers mounts tack wing CyA cyanoacrylate glue Use triangle check squareness wing leading edge Slip rear formers over pushrod fit pushrod through hole fuselage side Slide sides up doubler assembly pull together rear check theres no built-in twisting stress before gluing Install rear formers Add slow-curing epoxy area sides join doublers Wrap nose area masking tape hold assembly place epoxy cures youre satisfied alignment go ahead glue sides wing glue has cured add top bottom planking tail wheel Slide hinged stabilizer-and-elevator assembly place connect pushrod Align assembly carefully glue place Add fin-and-rudder assembly touch-up sanding necessary Covering finishing used mediumweight silkspan Sig dope prototype model use iron-on films sure attach ribs half-ribs strengthen wing isnt sort model concourse finishjust get neat fuelproof go fly OS 32 engine reworked good stunt run Theres no need use fuel 5% nitro content propeller 10 x 6 Graupner Sixty-foot lines about right Build model fixed lead-outs ounce tip weight itll plenty good sport flying use adjustable tip weight lead-outs fine-tuning contest-level performance demands could real kick enter simple SNAPPER competition against pro-stunters might surprise people Afterthoughts Although designed SNAPPER specifically 0S 32 engine other engines would suitable fact ubiquitous Fox 35 about perfect Other candidates include old Fox 25 29 OS 28 Royal 28 Merco 29 think aspiring stunt fliers make fundamental error learning profile models Theres just no easy way make profile rigid enough good engine run profiles can reinforced extra rigidity takes work does build simple box fuselage like used SNAPPER Another excellent learning stunter thats also fully contest capable Dee Rices classic Oriental now kitted Control Line Classics Check out Fly safely quietly enjoy SNAPPER want get pleasure out stunt flying learn about consider joining PAMPA Precision Aerobatics Model Pilots Association Write organization 1019 Creek Trail Anniston AL 36206 odel Aviation iient Siow Plight Characteristics Now time renew 93
Edition: Model Aviation - 1993/01
Page Numbers: 16, 18, 20, 52
maneuvers FIRST little background control line SNAPPER originated developmental platfomi exploring setup sidewinder-mounted OS 32 engine planning fly Walt Pyron P-39 design Vintage Stunt Championships-V didnt want use contest plane find answers Earlier Id tried installing OS 32 Sig Skyray found nose too flexible get reliable engine run plane flew great anyway Realizing needed full fuselage structural rigidity began scanning list plans see what adaptable wasnt looking contest performance flaps werent necessary quicker build better best solution seemed scaledup version classic 1954 /2A Snapper Rudimentary calculations showed 16 Model Aviation esize rendition 1954 112A classic perfect learning stunt U Tom Dixon Continued page 18 Silkspan-covered SNAPPER features Sig clear dope wing Pactra Formula U onThe elevator pushrod retained fuselage tail wing tips Author saved weight time using least painthorn l32 wheel collar pushrod possible Lettering custom-cut Vinylwriteexit cover /i6 balsa doubling linear dimensions would increase wingspan 48 inches wing area approximately 460 square inches made quick trip photocopy shop 200% enlargement original plan work Its much easier trace parts scale up individually better maintain airfoil section added half-ribs between main ribs Otherwise original plan unchanged general doubled original wood sizes isnt essential cant find very lightweight -in balsa stabilizer example substituting medium-weight 3/~ balsa wont make difference few words about original Half-A Snapper order Designed George Millikin 1954 model kitted Southwestern Models Tulsa Oklahoma must have built five six kid using OK Cub Cox Babe Bee 049 engines Dacron lines plane flew comfortably inverted doing loops figure eights original plans brag Snapper capable square loops doubt its relatively heavy wing loading Southwestern Models version would have lacked enough efficiency square loops larger version can perform maneuverand everything else AMA patternas long dont overload paint Two different nose arrangements shown planthe test bed system beam mounts inverted engine test bed system built two cowls permit both side-mounted inverted engine installations rear base plate Great Planes engine mount exactly square handy feature allows engine mounted down up outall using same holes firewall Most modelers probably will use arrangement includes beam mounts inverted engine because its easier build intend try flying SNAPPER engine cylinder mounted inboard no other reason settle controversy about inboard versus outboard mounting profile models Construction As models its best begin making kit parts advocate buying two sets plans Use building guide cut up other paper templates trace parts onto wood time hassle saved worth few extra dollars Plan engine mounting method decide use Great Planes mount may need order Tower Hobbies since its unlikely available hobby shops Wing Cut in wing spar piece wider sheet saw sand sizeand dead straight use method because can difficult find straight strip wood Glue first doubler spar halves Add other spar half align assembly carefully straightedge add second doubler Like spar 1A6 x 2-in trailing edge TE pieces should cut 3-inwide sheet achieve straight edges Splice TE pieces together reinforce joints backup pieces 6 sheet Cut rib templates /i6 ply stack cut 16 full ribs Cut 12 ribs half-ribs trimming shown plan Use X-Acto knife #11 blade relieve center ribs spar doublers Trim ribs center planking well see plan dont have flat pinnable building board make temporary jig two pieces balsaone measuring Left simple sliding-block lead-out adjuster permits optimum trimming see sketchThe side-mounted engine snug cowl page 20 Right Modified Smith fuel tank Vents moved get tanklend SNAPPER very clean appearance volume limited space availableand decrease drag smooth flights 18 Model Aviation A Royal 28 modified stunt performance possible engine installations needle locking collet can tightened through large hole top cowl Right Wing ribs stack cut A6 ply template Continued paRe 20 Full Size Plans Available-See Page 176 /BA / /V WING PLAN TOP VIEW il74 -Th-~4i--V - - PLT S1AABBBLSABB ARBEiBALSABATE BBEB BOA PAABL B SALT TAABTASR TABS TASAA BAA BESA TASARA SALAA BABETATTSAA5 AAAWOaELBOSBAIT LACATESTAP ABA BATTAB LI STABILIZER BESEWINGRIBPATTERN FUSELAGE TOP VIEWELEVATOR SABABB __ASPUTAOTAPAESPBATAPBAUET T1BABBBAE P3 P2 B BALSA BABATLANDING GEAR DETAIL LB TOTSFUSELAGE VIEWTAL BALTS TAIL BAAOPTIONAl MOTOR MOUNT DETRL UDDEL AVIATIGN SNAPPER BIBS TIP PLATE S LSBASST AS BALSA ESBET ABABEE BY TANS BIXAN ABASE AAAABSI TEBTEB SBm B BAT BAT SALASTEBABACA55rBAINERT PLAN CAC EPUBACA ISAPLTPLSBLABPBAABASALSABAATOALLASEBB /2 X 3 x 48 another 1 thick Both pieces must very straight Tape wing plan /2 X 3-in balsa sheet pin lower trailing edge sheet over plan Insert spar main ribs Pin assembly TE sheet positioning ribs over plan locations Check vertical alignment ribs pin tape leading edge place youTre satisfied everything well aligned glue joints adhesive choice Install half-ribs Glue forward center-section planking Unpin trailing edge sheet Epoxy /4TANLlOflKFI Fr 4-40X1/2ScrewF blind nut FiIF F /G plyF 31GX4 long1F T/ slot TOP ViEW ribs jig install top TE sheet Use slow-drying glue maintain straightness repin entire assembly until glue has set Remove assembly jig Install bellcrank mount wing tips rest center-section planking Sand leading edge smooth radius sand out other irregularities Tail surfaces simple sheet-balsa structures require little explanation caution sure omit tubing bearing wire elevator joiner youd get premature wear hinges prototype model used Sig E-Z Hinges Continued poge 52 Wingspan 48 inches Recommended engine size type OS 32 reworked stunt performance choose Variety 25- through 32-size engines Expected flying weight available Type construction Built-up Type covering/finish recommended Silkspan clear dope wing Formula U fuselage tail wing tips Iron-on plastic films also suitable Top end views sliding-block lead-out adjuster simple models benefit strategically located lead-outs 20 Model Aviation 4yAALP ROSA, 1 J2A I----A Type CL sport/stunt Epoxy Lead-outs END VIEW E3] -22---w lip plate 3 laminations 1G Center lamination cut out allow leadouts slide GET BUZZIFLY THE LANIER RC STINGER 120 Specifications Fuselage Length 48/4 Rec Engine Size 91-22 2-Stroke 120-160 4-Stroke Flying Weight II lbs up Wing Span IMAA Legal 80 Non-IMAA Legal 72 Wing Area IMAA Legal 1344 sq Non-IMAA Legal 1210 sq Radio Channels 4 Cat No 92215 Stinger 120 Features Vacuum Formed Fuselage Turtledeck Wing Fuel Tank Cover Foam Wing Balsa Spars Partial Balsa Sheeting Cap Stripping Required Parts Complete Built-up Fuselage Plywood Sides Hefty Performed Aluminum Landing Gear ABS Cowl Wheel Pants Parts Complete Built-up Tail Assembly Vacuum Formed Canopy Especially Designed First Time Giant Scale Pilot Spare Parts Available No Hardware Included Can Flown IMAA Events Phone 706/404-532-6401 900-530 EST M-F FAX 706/404-532-2163 Lanier RC PO Box 458 Oakwood GA 30566 Send SASE Free Color Catalog CL SNAPPER/Dixon Continued page 20 Fuselage This structure built two major assembliesthe engine mount doublers rest full-length sides Thus its important doublers fit wing closely properly aligned doublers have designed longer necessary aid alignment also indexed doublers indicate amount fuel tank offset required achieve equal speed runs whether engine mounted upright inverted fuel tank offset prototype model 3/ Make doublers mounts tack wing CyA cyanoacrylate glue Use triangle check squareness wing leading edge Slip rear formers over pushrod fit pushrod through hole fuselage side Slide sides up doubler assembly pull together rear check theres no built-in twisting stress before gluing Install rear formers Add slow-curing epoxy area sides join doublers Wrap nose area masking tape hold assembly place epoxy cures youre satisfied alignment go ahead glue sides wing glue has cured add top bottom planking tail wheel Slide hinged stabilizer-and-elevator assembly place connect pushrod Align assembly carefully glue place Add fin-and-rudder assembly touch-up sanding necessary Covering finishing used mediumweight silkspan Sig dope prototype model use iron-on films sure attach ribs half-ribs strengthen wing isnt sort model concourse finishjust get neat fuelproof go fly OS 32 engine reworked good stunt run Theres no need use fuel 5% nitro content propeller 10 x 6 Graupner Sixty-foot lines about right Build model fixed lead-outs ounce tip weight itll plenty good sport flying use adjustable tip weight lead-outs fine-tuning contest-level performance demands could real kick enter simple SNAPPER competition against pro-stunters might surprise people Afterthoughts Although designed SNAPPER specifically 0S 32 engine other engines would suitable fact ubiquitous Fox 35 about perfect Other candidates include old Fox 25 29 OS 28 Royal 28 Merco 29 think aspiring stunt fliers make fundamental error learning profile models Theres just no easy way make profile rigid enough good engine run profiles can reinforced extra rigidity takes work does build simple box fuselage like used SNAPPER Another excellent learning stunter thats also fully contest capable Dee Rices classic Oriental now kitted Control Line Classics Check out Fly safely quietly enjoy SNAPPER want get pleasure out stunt flying learn about consider joining PAMPA Precision Aerobatics Model Pilots Association Write organization 1019 Creek Trail Anniston AL 36206 odel Aviation iient Siow Plight Characteristics Now time renew 93