U Dick Sarpolus jfiiitary aircraft always popular 3/5 odeling subjects North WI American 1-28 has well-liked LYE modelers since first flew 1949 felt T-28 would ideal choice Control Line profile project 1-28s clean lines would easy fashion sheet-balsa construction 1/2A-powered sheet-balsa profiles bargain way enjoy CL flying theyre low-cost easy build offer plenty aerobatic capability Easy underestimate todays all-balsa /2As just lump end string good engine sized correctly flown 35-foot wire lines rather string airplanes can put through aerobatic pattern contest-quality maneuvers well enough plenty flying fun Because theyre light strong enough bounce back crashes flown over grass fields theyre suitable beginners skilled pilots can still use flying ability relaxed flying fun like build fly small CL projects definite change larger more-complicated aircraft usually work 44 Model Aviation ough model sheet balsa profile true scale sure looks like North American T-28 military trainer Simple rugged 1hA aircraft like T-28 can fly entire Stunt pattern fun level flown over grass bounce back crashes on I really built T-28 because just purchased new t/2A engine NorVel BigMig 061 Russian-built power plant seems 40 has scaled down t/2A size good trick particularly like way can get good engine run complete flight engine will consistently Makes fun fly CONSTRUCTION model layout enlarge scale outline drawing copy machine making fuselage side view first length want wing tail surface outlines span size want fudge outlines overall surface proportions get sizes moments needed Control Line aerobatic flying model designed like isnt intended sort Scale competition will fly well finished trimmed well will look enough like original aircraft construction used very basic Fuselage a /32 plywood nose section doublers Wing tail surfaces t/8 balsa belicrank mount leadout guide 1/ plywood Hardware hobby shop-available nylon two-inch bellcrank bolt-on nylon elevator horn tAh wire pushrod 025 wire leadouts Hinges traditional CL cloth over-and-under style fuel tank small-size usual CL type use Perfect brand suggest cut out parts aircraft before beginning assembly have materials hand simple construction will take few evenings build up model have ajig saw band saw model like could built hand-cutting parts too much trouble usually spend time painting trimming aircraft actually building part fun putting enough detail good appearance yet adding weight hurt performance Cut up plans parts patterns trace part outlines want save plans Edge-glue whatever width wood have get widths necessary fuselage wing like aliphatic-resin wood glues edge-gluing Dont too particular about wood selection try medium-to-firm balsa Really hard balsa isnt needed would too heavy soft light balsa wouldnt strong enough large sheet wing airplanes bounce back crashes grass field break cyanoacrylate CyA glue five-minute epoxy can usually get back air quickly Fuselage Glue hardwood engine mounts place proper spacing suit engine youll using Cox Tee Dee 049 051 would Photos Author Graphic Design Jill Ann Cavensugh February 1999 45 Major subassemblies complete parts sanded thoroughly edges rounded prior final assembly Norvel BigMig 061 -ounce Perfect tank T-28 flown 008 012 stranded steel cable 35 feet long Simple control system uses nylon bellcrank control horn elevator wire leadouts pushrod bellcrank control horn Type CL Sport Wingspan 291/4 inches Engine NorVel BigMig 061 Construction Sheet balsa Finish Butyrate dope alternative NorVel BigMig engines could use Cox reedvalve engines built-in fuel tank changing nose section include plywood firewall balsa reinforcing blocks behind desired reedvalve engines lower cost have less power Id recommend sticking BigMig Tee Dee engines Ive heard new slightly larger engine another manufacturer will soon marketanother new engine Ill probably building another new airplane Use epoxy plywood nose doublers five-minute type want build quickly Mark drill engine mounting holes through plywood hardwood engine mounts cleaner appearance want avoid usual engine cutout left side fuselage leave side doubler uncut add small plywood pads outboard side fuselage raise engine mounting lugs enough crankcase clears opposite side doubler might also want put wire hook retaining fuel tank outboard side fuselage cutting slot outboard side epoxying hook fuselage small plywood filler piece slot Wing Tail Cut wing parts shape glue separate tip sections grain direction will help wing resist warps sheet-balsa wing like can sometimes warp after airplane completed painted dont know get rid twist finished model However because sheet wing flexible warps just dont seem bother airplanes flying Sand edges round wing balsa tail surfaces Glue rudder fin offset /4 inch toward outside flying circle After model assembled small bit lead wire solder glued bottom outboard wing tip weight final assembly T-28 slide wing through fuselage slot align right angles fuselage hold wing place few pins tack-glue CyA glue following epoxy strength use finger make small fillets fiveminute epoxy mixed microballoons around fuselage wing tail surface joints strength appearance install elevator hinges before gluing stab fuselage using several coats good old-fashioned model airplane glue hinges like traditional appearance cloth hinges theyre easy put provide free movement seem last long model does tail surfaces added fuselage aligning wing Add plywood bellcrank mount leadout guide outboard tip weight nylon bellcrank mounted small screw nylon control horn bolted elevator 1/16 wire pushrod connects two Bend pushrod elevator bellerank lined up neutral positions connected get equal elevator travel direction fuel tank will held place right behind engine rubber band over wire hook installed earlier everything checked out engine bellerank control horn removed mounted again later leadouts after model painted trimmed Finish Ive always used butyrate dope paint all-balsa aircraft like Ive 46 Model Aviation PLYWOODI/B PLYWOOD if-__IIWI FUSELAGE CROSS SECTION AT NOSE 44 WIRE HOOK FOR FUEL TANK MOUNTING 1/32 PLYWOOD DOUBLERS 1/4 SQ HARDWOOD ENGINE MOUNTS OI23 4 5 6 PUSHROD -I CLOTH HINGES 1/4 FLY THIS MODEL ON 35 008 WIRE LINES T-28 1/2 CONTROL LINE STUNT/SPORT DESIGNED DRAWN DICK SARPOLUS #870 -I CD C CD CD CD -J NOR VEL BIG MIG 049 OR 061 ENGINE REC OMMENDED APPROX BALANCE POINT JUST ThINK HOW GREAT YOUR PLANE WOULD LOOK WITH THIS SENSATIONAL PROPELLER new SYNTEC variable pitch propellers will make model look great will fly great welL pitch two three four blade propellers fully adjustable 4 24 beautifully finished hard maple blades produced three styles size range 18 30 Blade pitch controlled calibrated dial front SYNTEC hub Mounting hardware available engines 12Oci larger Try airplane today experience convenience variable pitch beautu SYNTEC working butyrate 40-plus years am used see no reason change Use whatever paint system prefer try really super finish signs wood grain hidden takes too much paint adds too much weight suggest just enough finish get reasonable appearance protect wood fuel exhaust oil Sand entire model thoroughly fine paper apply coat sanding sealer sand completely fill much grain Follow four five coats clear dope sanding between coat seal wood Spray two three coats color minimum needed cover OK appearance brush trim paint masked ScotchTM fine-line masking tape some clear dope brushed along edge sure clean edging used white overall T-28 some red black trim light blue canopy paint trim schemes pick since Air Force Navy used T-28 Navy some painted yellow Air Force some fancy paint jobs airplanes used officer transport few inked panel control surface lines add some detail whole airplane gets few coats sprayed-on clear protection gloss Mylar stick-on military insignia add final touch Preflight Mount engine tank control hardware check proper balance model will likely balance close enough adding weight nose weight tail weight needed can drill /s hole fuselage glue length heavy solder Put washer under front engine mounting lug several degrees outthrust assist keeping lines tight flying use 008 012 stranded cable flying lines have heard 008 solid wire lines make less drag prefer stranded cable lines because theyre resistant kinks breaks Adjust engine before launch holding airplane nose-high position Have launcher keep lines tight point airplane slightly toward outside flying circle he/she takes few steps releases model forward motion level attitude Try putting T-28 through maneuver can think make some up Enjoy CL flying directconnection way fly Sarpolus 32 Alameda Court Shrewsbury NJ 07702 48 Model Aviation EC van -pitch propel[ers distributed exclusively through Gerard Enterprises Inc %A9 GERARD ENTERPRISES INC W226 N825 Eastmound Dr Waukesha WI 53186 414 521-0547 Fax 414 521-0551 source MOKI engines BISSON mv4fflers
Edition: Model Aviation - 1999/02
Page Numbers: 44, 45, 46, 47, 48
U Dick Sarpolus jfiiitary aircraft always popular 3/5 odeling subjects North WI American 1-28 has well-liked LYE modelers since first flew 1949 felt T-28 would ideal choice Control Line profile project 1-28s clean lines would easy fashion sheet-balsa construction 1/2A-powered sheet-balsa profiles bargain way enjoy CL flying theyre low-cost easy build offer plenty aerobatic capability Easy underestimate todays all-balsa /2As just lump end string good engine sized correctly flown 35-foot wire lines rather string airplanes can put through aerobatic pattern contest-quality maneuvers well enough plenty flying fun Because theyre light strong enough bounce back crashes flown over grass fields theyre suitable beginners skilled pilots can still use flying ability relaxed flying fun like build fly small CL projects definite change larger more-complicated aircraft usually work 44 Model Aviation ough model sheet balsa profile true scale sure looks like North American T-28 military trainer Simple rugged 1hA aircraft like T-28 can fly entire Stunt pattern fun level flown over grass bounce back crashes on I really built T-28 because just purchased new t/2A engine NorVel BigMig 061 Russian-built power plant seems 40 has scaled down t/2A size good trick particularly like way can get good engine run complete flight engine will consistently Makes fun fly CONSTRUCTION model layout enlarge scale outline drawing copy machine making fuselage side view first length want wing tail surface outlines span size want fudge outlines overall surface proportions get sizes moments needed Control Line aerobatic flying model designed like isnt intended sort Scale competition will fly well finished trimmed well will look enough like original aircraft construction used very basic Fuselage a /32 plywood nose section doublers Wing tail surfaces t/8 balsa belicrank mount leadout guide 1/ plywood Hardware hobby shop-available nylon two-inch bellcrank bolt-on nylon elevator horn tAh wire pushrod 025 wire leadouts Hinges traditional CL cloth over-and-under style fuel tank small-size usual CL type use Perfect brand suggest cut out parts aircraft before beginning assembly have materials hand simple construction will take few evenings build up model have ajig saw band saw model like could built hand-cutting parts too much trouble usually spend time painting trimming aircraft actually building part fun putting enough detail good appearance yet adding weight hurt performance Cut up plans parts patterns trace part outlines want save plans Edge-glue whatever width wood have get widths necessary fuselage wing like aliphatic-resin wood glues edge-gluing Dont too particular about wood selection try medium-to-firm balsa Really hard balsa isnt needed would too heavy soft light balsa wouldnt strong enough large sheet wing airplanes bounce back crashes grass field break cyanoacrylate CyA glue five-minute epoxy can usually get back air quickly Fuselage Glue hardwood engine mounts place proper spacing suit engine youll using Cox Tee Dee 049 051 would Photos Author Graphic Design Jill Ann Cavensugh February 1999 45 Major subassemblies complete parts sanded thoroughly edges rounded prior final assembly Norvel BigMig 061 -ounce Perfect tank T-28 flown 008 012 stranded steel cable 35 feet long Simple control system uses nylon bellcrank control horn elevator wire leadouts pushrod bellcrank control horn Type CL Sport Wingspan 291/4 inches Engine NorVel BigMig 061 Construction Sheet balsa Finish Butyrate dope alternative NorVel BigMig engines could use Cox reedvalve engines built-in fuel tank changing nose section include plywood firewall balsa reinforcing blocks behind desired reedvalve engines lower cost have less power Id recommend sticking BigMig Tee Dee engines Ive heard new slightly larger engine another manufacturer will soon marketanother new engine Ill probably building another new airplane Use epoxy plywood nose doublers five-minute type want build quickly Mark drill engine mounting holes through plywood hardwood engine mounts cleaner appearance want avoid usual engine cutout left side fuselage leave side doubler uncut add small plywood pads outboard side fuselage raise engine mounting lugs enough crankcase clears opposite side doubler might also want put wire hook retaining fuel tank outboard side fuselage cutting slot outboard side epoxying hook fuselage small plywood filler piece slot Wing Tail Cut wing parts shape glue separate tip sections grain direction will help wing resist warps sheet-balsa wing like can sometimes warp after airplane completed painted dont know get rid twist finished model However because sheet wing flexible warps just dont seem bother airplanes flying Sand edges round wing balsa tail surfaces Glue rudder fin offset /4 inch toward outside flying circle After model assembled small bit lead wire solder glued bottom outboard wing tip weight final assembly T-28 slide wing through fuselage slot align right angles fuselage hold wing place few pins tack-glue CyA glue following epoxy strength use finger make small fillets fiveminute epoxy mixed microballoons around fuselage wing tail surface joints strength appearance install elevator hinges before gluing stab fuselage using several coats good old-fashioned model airplane glue hinges like traditional appearance cloth hinges theyre easy put provide free movement seem last long model does tail surfaces added fuselage aligning wing Add plywood bellcrank mount leadout guide outboard tip weight nylon bellcrank mounted small screw nylon control horn bolted elevator 1/16 wire pushrod connects two Bend pushrod elevator bellerank lined up neutral positions connected get equal elevator travel direction fuel tank will held place right behind engine rubber band over wire hook installed earlier everything checked out engine bellerank control horn removed mounted again later leadouts after model painted trimmed Finish Ive always used butyrate dope paint all-balsa aircraft like Ive 46 Model Aviation PLYWOODI/B PLYWOOD if-__IIWI FUSELAGE CROSS SECTION AT NOSE 44 WIRE HOOK FOR FUEL TANK MOUNTING 1/32 PLYWOOD DOUBLERS 1/4 SQ HARDWOOD ENGINE MOUNTS OI23 4 5 6 PUSHROD -I CLOTH HINGES 1/4 FLY THIS MODEL ON 35 008 WIRE LINES T-28 1/2 CONTROL LINE STUNT/SPORT DESIGNED DRAWN DICK SARPOLUS #870 -I CD C CD CD CD -J NOR VEL BIG MIG 049 OR 061 ENGINE REC OMMENDED APPROX BALANCE POINT JUST ThINK HOW GREAT YOUR PLANE WOULD LOOK WITH THIS SENSATIONAL PROPELLER new SYNTEC variable pitch propellers will make model look great will fly great welL pitch two three four blade propellers fully adjustable 4 24 beautifully finished hard maple blades produced three styles size range 18 30 Blade pitch controlled calibrated dial front SYNTEC hub Mounting hardware available engines 12Oci larger Try airplane today experience convenience variable pitch beautu SYNTEC working butyrate 40-plus years am used see no reason change Use whatever paint system prefer try really super finish signs wood grain hidden takes too much paint adds too much weight suggest just enough finish get reasonable appearance protect wood fuel exhaust oil Sand entire model thoroughly fine paper apply coat sanding sealer sand completely fill much grain Follow four five coats clear dope sanding between coat seal wood Spray two three coats color minimum needed cover OK appearance brush trim paint masked ScotchTM fine-line masking tape some clear dope brushed along edge sure clean edging used white overall T-28 some red black trim light blue canopy paint trim schemes pick since Air Force Navy used T-28 Navy some painted yellow Air Force some fancy paint jobs airplanes used officer transport few inked panel control surface lines add some detail whole airplane gets few coats sprayed-on clear protection gloss Mylar stick-on military insignia add final touch Preflight Mount engine tank control hardware check proper balance model will likely balance close enough adding weight nose weight tail weight needed can drill /s hole fuselage glue length heavy solder Put washer under front engine mounting lug several degrees outthrust assist keeping lines tight flying use 008 012 stranded cable flying lines have heard 008 solid wire lines make less drag prefer stranded cable lines because theyre resistant kinks breaks Adjust engine before launch holding airplane nose-high position Have launcher keep lines tight point airplane slightly toward outside flying circle he/she takes few steps releases model forward motion level attitude Try putting T-28 through maneuver can think make some up Enjoy CL flying directconnection way fly Sarpolus 32 Alameda Court Shrewsbury NJ 07702 48 Model Aviation EC van -pitch propel[ers distributed exclusively through Gerard Enterprises Inc %A9 GERARD ENTERPRISES INC W226 N825 Eastmound Dr Waukesha WI 53186 414 521-0547 Fax 414 521-0551 source MOKI engines BISSON mv4fflers
Edition: Model Aviation - 1999/02
Page Numbers: 44, 45, 46, 47, 48
U Dick Sarpolus jfiiitary aircraft always popular 3/5 odeling subjects North WI American 1-28 has well-liked LYE modelers since first flew 1949 felt T-28 would ideal choice Control Line profile project 1-28s clean lines would easy fashion sheet-balsa construction 1/2A-powered sheet-balsa profiles bargain way enjoy CL flying theyre low-cost easy build offer plenty aerobatic capability Easy underestimate todays all-balsa /2As just lump end string good engine sized correctly flown 35-foot wire lines rather string airplanes can put through aerobatic pattern contest-quality maneuvers well enough plenty flying fun Because theyre light strong enough bounce back crashes flown over grass fields theyre suitable beginners skilled pilots can still use flying ability relaxed flying fun like build fly small CL projects definite change larger more-complicated aircraft usually work 44 Model Aviation ough model sheet balsa profile true scale sure looks like North American T-28 military trainer Simple rugged 1hA aircraft like T-28 can fly entire Stunt pattern fun level flown over grass bounce back crashes on I really built T-28 because just purchased new t/2A engine NorVel BigMig 061 Russian-built power plant seems 40 has scaled down t/2A size good trick particularly like way can get good engine run complete flight engine will consistently Makes fun fly CONSTRUCTION model layout enlarge scale outline drawing copy machine making fuselage side view first length want wing tail surface outlines span size want fudge outlines overall surface proportions get sizes moments needed Control Line aerobatic flying model designed like isnt intended sort Scale competition will fly well finished trimmed well will look enough like original aircraft construction used very basic Fuselage a /32 plywood nose section doublers Wing tail surfaces t/8 balsa belicrank mount leadout guide 1/ plywood Hardware hobby shop-available nylon two-inch bellcrank bolt-on nylon elevator horn tAh wire pushrod 025 wire leadouts Hinges traditional CL cloth over-and-under style fuel tank small-size usual CL type use Perfect brand suggest cut out parts aircraft before beginning assembly have materials hand simple construction will take few evenings build up model have ajig saw band saw model like could built hand-cutting parts too much trouble usually spend time painting trimming aircraft actually building part fun putting enough detail good appearance yet adding weight hurt performance Cut up plans parts patterns trace part outlines want save plans Edge-glue whatever width wood have get widths necessary fuselage wing like aliphatic-resin wood glues edge-gluing Dont too particular about wood selection try medium-to-firm balsa Really hard balsa isnt needed would too heavy soft light balsa wouldnt strong enough large sheet wing airplanes bounce back crashes grass field break cyanoacrylate CyA glue five-minute epoxy can usually get back air quickly Fuselage Glue hardwood engine mounts place proper spacing suit engine youll using Cox Tee Dee 049 051 would Photos Author Graphic Design Jill Ann Cavensugh February 1999 45 Major subassemblies complete parts sanded thoroughly edges rounded prior final assembly Norvel BigMig 061 -ounce Perfect tank T-28 flown 008 012 stranded steel cable 35 feet long Simple control system uses nylon bellcrank control horn elevator wire leadouts pushrod bellcrank control horn Type CL Sport Wingspan 291/4 inches Engine NorVel BigMig 061 Construction Sheet balsa Finish Butyrate dope alternative NorVel BigMig engines could use Cox reedvalve engines built-in fuel tank changing nose section include plywood firewall balsa reinforcing blocks behind desired reedvalve engines lower cost have less power Id recommend sticking BigMig Tee Dee engines Ive heard new slightly larger engine another manufacturer will soon marketanother new engine Ill probably building another new airplane Use epoxy plywood nose doublers five-minute type want build quickly Mark drill engine mounting holes through plywood hardwood engine mounts cleaner appearance want avoid usual engine cutout left side fuselage leave side doubler uncut add small plywood pads outboard side fuselage raise engine mounting lugs enough crankcase clears opposite side doubler might also want put wire hook retaining fuel tank outboard side fuselage cutting slot outboard side epoxying hook fuselage small plywood filler piece slot Wing Tail Cut wing parts shape glue separate tip sections grain direction will help wing resist warps sheet-balsa wing like can sometimes warp after airplane completed painted dont know get rid twist finished model However because sheet wing flexible warps just dont seem bother airplanes flying Sand edges round wing balsa tail surfaces Glue rudder fin offset /4 inch toward outside flying circle After model assembled small bit lead wire solder glued bottom outboard wing tip weight final assembly T-28 slide wing through fuselage slot align right angles fuselage hold wing place few pins tack-glue CyA glue following epoxy strength use finger make small fillets fiveminute epoxy mixed microballoons around fuselage wing tail surface joints strength appearance install elevator hinges before gluing stab fuselage using several coats good old-fashioned model airplane glue hinges like traditional appearance cloth hinges theyre easy put provide free movement seem last long model does tail surfaces added fuselage aligning wing Add plywood bellcrank mount leadout guide outboard tip weight nylon bellcrank mounted small screw nylon control horn bolted elevator 1/16 wire pushrod connects two Bend pushrod elevator bellerank lined up neutral positions connected get equal elevator travel direction fuel tank will held place right behind engine rubber band over wire hook installed earlier everything checked out engine bellerank control horn removed mounted again later leadouts after model painted trimmed Finish Ive always used butyrate dope paint all-balsa aircraft like Ive 46 Model Aviation PLYWOODI/B PLYWOOD if-__IIWI FUSELAGE CROSS SECTION AT NOSE 44 WIRE HOOK FOR FUEL TANK MOUNTING 1/32 PLYWOOD DOUBLERS 1/4 SQ HARDWOOD ENGINE MOUNTS OI23 4 5 6 PUSHROD -I CLOTH HINGES 1/4 FLY THIS MODEL ON 35 008 WIRE LINES T-28 1/2 CONTROL LINE STUNT/SPORT DESIGNED DRAWN DICK SARPOLUS #870 -I CD C CD CD CD -J NOR VEL BIG MIG 049 OR 061 ENGINE REC OMMENDED APPROX BALANCE POINT JUST ThINK HOW GREAT YOUR PLANE WOULD LOOK WITH THIS SENSATIONAL PROPELLER new SYNTEC variable pitch propellers will make model look great will fly great welL pitch two three four blade propellers fully adjustable 4 24 beautifully finished hard maple blades produced three styles size range 18 30 Blade pitch controlled calibrated dial front SYNTEC hub Mounting hardware available engines 12Oci larger Try airplane today experience convenience variable pitch beautu SYNTEC working butyrate 40-plus years am used see no reason change Use whatever paint system prefer try really super finish signs wood grain hidden takes too much paint adds too much weight suggest just enough finish get reasonable appearance protect wood fuel exhaust oil Sand entire model thoroughly fine paper apply coat sanding sealer sand completely fill much grain Follow four five coats clear dope sanding between coat seal wood Spray two three coats color minimum needed cover OK appearance brush trim paint masked ScotchTM fine-line masking tape some clear dope brushed along edge sure clean edging used white overall T-28 some red black trim light blue canopy paint trim schemes pick since Air Force Navy used T-28 Navy some painted yellow Air Force some fancy paint jobs airplanes used officer transport few inked panel control surface lines add some detail whole airplane gets few coats sprayed-on clear protection gloss Mylar stick-on military insignia add final touch Preflight Mount engine tank control hardware check proper balance model will likely balance close enough adding weight nose weight tail weight needed can drill /s hole fuselage glue length heavy solder Put washer under front engine mounting lug several degrees outthrust assist keeping lines tight flying use 008 012 stranded cable flying lines have heard 008 solid wire lines make less drag prefer stranded cable lines because theyre resistant kinks breaks Adjust engine before launch holding airplane nose-high position Have launcher keep lines tight point airplane slightly toward outside flying circle he/she takes few steps releases model forward motion level attitude Try putting T-28 through maneuver can think make some up Enjoy CL flying directconnection way fly Sarpolus 32 Alameda Court Shrewsbury NJ 07702 48 Model Aviation EC van -pitch propel[ers distributed exclusively through Gerard Enterprises Inc %A9 GERARD ENTERPRISES INC W226 N825 Eastmound Dr Waukesha WI 53186 414 521-0547 Fax 414 521-0551 source MOKI engines BISSON mv4fflers
Edition: Model Aviation - 1999/02
Page Numbers: 44, 45, 46, 47, 48
U Dick Sarpolus jfiiitary aircraft always popular 3/5 odeling subjects North WI American 1-28 has well-liked LYE modelers since first flew 1949 felt T-28 would ideal choice Control Line profile project 1-28s clean lines would easy fashion sheet-balsa construction 1/2A-powered sheet-balsa profiles bargain way enjoy CL flying theyre low-cost easy build offer plenty aerobatic capability Easy underestimate todays all-balsa /2As just lump end string good engine sized correctly flown 35-foot wire lines rather string airplanes can put through aerobatic pattern contest-quality maneuvers well enough plenty flying fun Because theyre light strong enough bounce back crashes flown over grass fields theyre suitable beginners skilled pilots can still use flying ability relaxed flying fun like build fly small CL projects definite change larger more-complicated aircraft usually work 44 Model Aviation ough model sheet balsa profile true scale sure looks like North American T-28 military trainer Simple rugged 1hA aircraft like T-28 can fly entire Stunt pattern fun level flown over grass bounce back crashes on I really built T-28 because just purchased new t/2A engine NorVel BigMig 061 Russian-built power plant seems 40 has scaled down t/2A size good trick particularly like way can get good engine run complete flight engine will consistently Makes fun fly CONSTRUCTION model layout enlarge scale outline drawing copy machine making fuselage side view first length want wing tail surface outlines span size want fudge outlines overall surface proportions get sizes moments needed Control Line aerobatic flying model designed like isnt intended sort Scale competition will fly well finished trimmed well will look enough like original aircraft construction used very basic Fuselage a /32 plywood nose section doublers Wing tail surfaces t/8 balsa belicrank mount leadout guide 1/ plywood Hardware hobby shop-available nylon two-inch bellcrank bolt-on nylon elevator horn tAh wire pushrod 025 wire leadouts Hinges traditional CL cloth over-and-under style fuel tank small-size usual CL type use Perfect brand suggest cut out parts aircraft before beginning assembly have materials hand simple construction will take few evenings build up model have ajig saw band saw model like could built hand-cutting parts too much trouble usually spend time painting trimming aircraft actually building part fun putting enough detail good appearance yet adding weight hurt performance Cut up plans parts patterns trace part outlines want save plans Edge-glue whatever width wood have get widths necessary fuselage wing like aliphatic-resin wood glues edge-gluing Dont too particular about wood selection try medium-to-firm balsa Really hard balsa isnt needed would too heavy soft light balsa wouldnt strong enough large sheet wing airplanes bounce back crashes grass field break cyanoacrylate CyA glue five-minute epoxy can usually get back air quickly Fuselage Glue hardwood engine mounts place proper spacing suit engine youll using Cox Tee Dee 049 051 would Photos Author Graphic Design Jill Ann Cavensugh February 1999 45 Major subassemblies complete parts sanded thoroughly edges rounded prior final assembly Norvel BigMig 061 -ounce Perfect tank T-28 flown 008 012 stranded steel cable 35 feet long Simple control system uses nylon bellcrank control horn elevator wire leadouts pushrod bellcrank control horn Type CL Sport Wingspan 291/4 inches Engine NorVel BigMig 061 Construction Sheet balsa Finish Butyrate dope alternative NorVel BigMig engines could use Cox reedvalve engines built-in fuel tank changing nose section include plywood firewall balsa reinforcing blocks behind desired reedvalve engines lower cost have less power Id recommend sticking BigMig Tee Dee engines Ive heard new slightly larger engine another manufacturer will soon marketanother new engine Ill probably building another new airplane Use epoxy plywood nose doublers five-minute type want build quickly Mark drill engine mounting holes through plywood hardwood engine mounts cleaner appearance want avoid usual engine cutout left side fuselage leave side doubler uncut add small plywood pads outboard side fuselage raise engine mounting lugs enough crankcase clears opposite side doubler might also want put wire hook retaining fuel tank outboard side fuselage cutting slot outboard side epoxying hook fuselage small plywood filler piece slot Wing Tail Cut wing parts shape glue separate tip sections grain direction will help wing resist warps sheet-balsa wing like can sometimes warp after airplane completed painted dont know get rid twist finished model However because sheet wing flexible warps just dont seem bother airplanes flying Sand edges round wing balsa tail surfaces Glue rudder fin offset /4 inch toward outside flying circle After model assembled small bit lead wire solder glued bottom outboard wing tip weight final assembly T-28 slide wing through fuselage slot align right angles fuselage hold wing place few pins tack-glue CyA glue following epoxy strength use finger make small fillets fiveminute epoxy mixed microballoons around fuselage wing tail surface joints strength appearance install elevator hinges before gluing stab fuselage using several coats good old-fashioned model airplane glue hinges like traditional appearance cloth hinges theyre easy put provide free movement seem last long model does tail surfaces added fuselage aligning wing Add plywood bellcrank mount leadout guide outboard tip weight nylon bellcrank mounted small screw nylon control horn bolted elevator 1/16 wire pushrod connects two Bend pushrod elevator bellerank lined up neutral positions connected get equal elevator travel direction fuel tank will held place right behind engine rubber band over wire hook installed earlier everything checked out engine bellerank control horn removed mounted again later leadouts after model painted trimmed Finish Ive always used butyrate dope paint all-balsa aircraft like Ive 46 Model Aviation PLYWOODI/B PLYWOOD if-__IIWI FUSELAGE CROSS SECTION AT NOSE 44 WIRE HOOK FOR FUEL TANK MOUNTING 1/32 PLYWOOD DOUBLERS 1/4 SQ HARDWOOD ENGINE MOUNTS OI23 4 5 6 PUSHROD -I CLOTH HINGES 1/4 FLY THIS MODEL ON 35 008 WIRE LINES T-28 1/2 CONTROL LINE STUNT/SPORT DESIGNED DRAWN DICK SARPOLUS #870 -I CD C CD CD CD -J NOR VEL BIG MIG 049 OR 061 ENGINE REC OMMENDED APPROX BALANCE POINT JUST ThINK HOW GREAT YOUR PLANE WOULD LOOK WITH THIS SENSATIONAL PROPELLER new SYNTEC variable pitch propellers will make model look great will fly great welL pitch two three four blade propellers fully adjustable 4 24 beautifully finished hard maple blades produced three styles size range 18 30 Blade pitch controlled calibrated dial front SYNTEC hub Mounting hardware available engines 12Oci larger Try airplane today experience convenience variable pitch beautu SYNTEC working butyrate 40-plus years am used see no reason change Use whatever paint system prefer try really super finish signs wood grain hidden takes too much paint adds too much weight suggest just enough finish get reasonable appearance protect wood fuel exhaust oil Sand entire model thoroughly fine paper apply coat sanding sealer sand completely fill much grain Follow four five coats clear dope sanding between coat seal wood Spray two three coats color minimum needed cover OK appearance brush trim paint masked ScotchTM fine-line masking tape some clear dope brushed along edge sure clean edging used white overall T-28 some red black trim light blue canopy paint trim schemes pick since Air Force Navy used T-28 Navy some painted yellow Air Force some fancy paint jobs airplanes used officer transport few inked panel control surface lines add some detail whole airplane gets few coats sprayed-on clear protection gloss Mylar stick-on military insignia add final touch Preflight Mount engine tank control hardware check proper balance model will likely balance close enough adding weight nose weight tail weight needed can drill /s hole fuselage glue length heavy solder Put washer under front engine mounting lug several degrees outthrust assist keeping lines tight flying use 008 012 stranded cable flying lines have heard 008 solid wire lines make less drag prefer stranded cable lines because theyre resistant kinks breaks Adjust engine before launch holding airplane nose-high position Have launcher keep lines tight point airplane slightly toward outside flying circle he/she takes few steps releases model forward motion level attitude Try putting T-28 through maneuver can think make some up Enjoy CL flying directconnection way fly Sarpolus 32 Alameda Court Shrewsbury NJ 07702 48 Model Aviation EC van -pitch propel[ers distributed exclusively through Gerard Enterprises Inc %A9 GERARD ENTERPRISES INC W226 N825 Eastmound Dr Waukesha WI 53186 414 521-0547 Fax 414 521-0551 source MOKI engines BISSON mv4fflers
Edition: Model Aviation - 1999/02
Page Numbers: 44, 45, 46, 47, 48
U Dick Sarpolus jfiiitary aircraft always popular 3/5 odeling subjects North WI American 1-28 has well-liked LYE modelers since first flew 1949 felt T-28 would ideal choice Control Line profile project 1-28s clean lines would easy fashion sheet-balsa construction 1/2A-powered sheet-balsa profiles bargain way enjoy CL flying theyre low-cost easy build offer plenty aerobatic capability Easy underestimate todays all-balsa /2As just lump end string good engine sized correctly flown 35-foot wire lines rather string airplanes can put through aerobatic pattern contest-quality maneuvers well enough plenty flying fun Because theyre light strong enough bounce back crashes flown over grass fields theyre suitable beginners skilled pilots can still use flying ability relaxed flying fun like build fly small CL projects definite change larger more-complicated aircraft usually work 44 Model Aviation ough model sheet balsa profile true scale sure looks like North American T-28 military trainer Simple rugged 1hA aircraft like T-28 can fly entire Stunt pattern fun level flown over grass bounce back crashes on I really built T-28 because just purchased new t/2A engine NorVel BigMig 061 Russian-built power plant seems 40 has scaled down t/2A size good trick particularly like way can get good engine run complete flight engine will consistently Makes fun fly CONSTRUCTION model layout enlarge scale outline drawing copy machine making fuselage side view first length want wing tail surface outlines span size want fudge outlines overall surface proportions get sizes moments needed Control Line aerobatic flying model designed like isnt intended sort Scale competition will fly well finished trimmed well will look enough like original aircraft construction used very basic Fuselage a /32 plywood nose section doublers Wing tail surfaces t/8 balsa belicrank mount leadout guide 1/ plywood Hardware hobby shop-available nylon two-inch bellcrank bolt-on nylon elevator horn tAh wire pushrod 025 wire leadouts Hinges traditional CL cloth over-and-under style fuel tank small-size usual CL type use Perfect brand suggest cut out parts aircraft before beginning assembly have materials hand simple construction will take few evenings build up model have ajig saw band saw model like could built hand-cutting parts too much trouble usually spend time painting trimming aircraft actually building part fun putting enough detail good appearance yet adding weight hurt performance Cut up plans parts patterns trace part outlines want save plans Edge-glue whatever width wood have get widths necessary fuselage wing like aliphatic-resin wood glues edge-gluing Dont too particular about wood selection try medium-to-firm balsa Really hard balsa isnt needed would too heavy soft light balsa wouldnt strong enough large sheet wing airplanes bounce back crashes grass field break cyanoacrylate CyA glue five-minute epoxy can usually get back air quickly Fuselage Glue hardwood engine mounts place proper spacing suit engine youll using Cox Tee Dee 049 051 would Photos Author Graphic Design Jill Ann Cavensugh February 1999 45 Major subassemblies complete parts sanded thoroughly edges rounded prior final assembly Norvel BigMig 061 -ounce Perfect tank T-28 flown 008 012 stranded steel cable 35 feet long Simple control system uses nylon bellcrank control horn elevator wire leadouts pushrod bellcrank control horn Type CL Sport Wingspan 291/4 inches Engine NorVel BigMig 061 Construction Sheet balsa Finish Butyrate dope alternative NorVel BigMig engines could use Cox reedvalve engines built-in fuel tank changing nose section include plywood firewall balsa reinforcing blocks behind desired reedvalve engines lower cost have less power Id recommend sticking BigMig Tee Dee engines Ive heard new slightly larger engine another manufacturer will soon marketanother new engine Ill probably building another new airplane Use epoxy plywood nose doublers five-minute type want build quickly Mark drill engine mounting holes through plywood hardwood engine mounts cleaner appearance want avoid usual engine cutout left side fuselage leave side doubler uncut add small plywood pads outboard side fuselage raise engine mounting lugs enough crankcase clears opposite side doubler might also want put wire hook retaining fuel tank outboard side fuselage cutting slot outboard side epoxying hook fuselage small plywood filler piece slot Wing Tail Cut wing parts shape glue separate tip sections grain direction will help wing resist warps sheet-balsa wing like can sometimes warp after airplane completed painted dont know get rid twist finished model However because sheet wing flexible warps just dont seem bother airplanes flying Sand edges round wing balsa tail surfaces Glue rudder fin offset /4 inch toward outside flying circle After model assembled small bit lead wire solder glued bottom outboard wing tip weight final assembly T-28 slide wing through fuselage slot align right angles fuselage hold wing place few pins tack-glue CyA glue following epoxy strength use finger make small fillets fiveminute epoxy mixed microballoons around fuselage wing tail surface joints strength appearance install elevator hinges before gluing stab fuselage using several coats good old-fashioned model airplane glue hinges like traditional appearance cloth hinges theyre easy put provide free movement seem last long model does tail surfaces added fuselage aligning wing Add plywood bellcrank mount leadout guide outboard tip weight nylon bellcrank mounted small screw nylon control horn bolted elevator 1/16 wire pushrod connects two Bend pushrod elevator bellerank lined up neutral positions connected get equal elevator travel direction fuel tank will held place right behind engine rubber band over wire hook installed earlier everything checked out engine bellerank control horn removed mounted again later leadouts after model painted trimmed Finish Ive always used butyrate dope paint all-balsa aircraft like Ive 46 Model Aviation PLYWOODI/B PLYWOOD if-__IIWI FUSELAGE CROSS SECTION AT NOSE 44 WIRE HOOK FOR FUEL TANK MOUNTING 1/32 PLYWOOD DOUBLERS 1/4 SQ HARDWOOD ENGINE MOUNTS OI23 4 5 6 PUSHROD -I CLOTH HINGES 1/4 FLY THIS MODEL ON 35 008 WIRE LINES T-28 1/2 CONTROL LINE STUNT/SPORT DESIGNED DRAWN DICK SARPOLUS #870 -I CD C CD CD CD -J NOR VEL BIG MIG 049 OR 061 ENGINE REC OMMENDED APPROX BALANCE POINT JUST ThINK HOW GREAT YOUR PLANE WOULD LOOK WITH THIS SENSATIONAL PROPELLER new SYNTEC variable pitch propellers will make model look great will fly great welL pitch two three four blade propellers fully adjustable 4 24 beautifully finished hard maple blades produced three styles size range 18 30 Blade pitch controlled calibrated dial front SYNTEC hub Mounting hardware available engines 12Oci larger Try airplane today experience convenience variable pitch beautu SYNTEC working butyrate 40-plus years am used see no reason change Use whatever paint system prefer try really super finish signs wood grain hidden takes too much paint adds too much weight suggest just enough finish get reasonable appearance protect wood fuel exhaust oil Sand entire model thoroughly fine paper apply coat sanding sealer sand completely fill much grain Follow four five coats clear dope sanding between coat seal wood Spray two three coats color minimum needed cover OK appearance brush trim paint masked ScotchTM fine-line masking tape some clear dope brushed along edge sure clean edging used white overall T-28 some red black trim light blue canopy paint trim schemes pick since Air Force Navy used T-28 Navy some painted yellow Air Force some fancy paint jobs airplanes used officer transport few inked panel control surface lines add some detail whole airplane gets few coats sprayed-on clear protection gloss Mylar stick-on military insignia add final touch Preflight Mount engine tank control hardware check proper balance model will likely balance close enough adding weight nose weight tail weight needed can drill /s hole fuselage glue length heavy solder Put washer under front engine mounting lug several degrees outthrust assist keeping lines tight flying use 008 012 stranded cable flying lines have heard 008 solid wire lines make less drag prefer stranded cable lines because theyre resistant kinks breaks Adjust engine before launch holding airplane nose-high position Have launcher keep lines tight point airplane slightly toward outside flying circle he/she takes few steps releases model forward motion level attitude Try putting T-28 through maneuver can think make some up Enjoy CL flying directconnection way fly Sarpolus 32 Alameda Court Shrewsbury NJ 07702 48 Model Aviation EC van -pitch propel[ers distributed exclusively through Gerard Enterprises Inc %A9 GERARD ENTERPRISES INC W226 N825 Eastmound Dr Waukesha WI 53186 414 521-0547 Fax 414 521-0551 source MOKI engines BISSON mv4fflers