Control Line UNLESS YOU ARE lucky enough live South winter have put away flying equipment started winter building project Minnesota winters give lot time some serious building So mind Id like review some thoughts tech niques building finishing detailing scale model major factors good scale model wing loading weight versus square inches want keep weight light possible per square inch especially true small model would have less wing area best way keep model light just over build often strong temptation make model overly strengthened withstand abnormal abuse recom mend hollowing out blocks especially aft rear section reducing Mike Stott weight section will eliminate hav ing add lot extra nose weight bal ance model later Another good place reduce weight would use triangles instead square stringers corner fuselage use triangle provides same glueing area gives same strength glue joint square stringer square stringer normally runs between formers can carved out before installing formers Only carve out sections stringers attached formers need full stringer attach former order have properly aligned formers try cutting out centers Cut opening close edge former can having bend break Also try technique ribs Ive found recommended around landing gear mounting blocks supports sure cut weight reducing openings ply wood formers plywood very strong openings cut out exception rule course firewall weight can save during basic construction will allow add detail sacrificing good flying characteristics finishing model greatly left up individuals own techniques basic thing remember have cracks joints filled sanded smooth before covering like use silk scale models covering material Silk lends strength Silkspan does take little filler will add some additional weight think its worth difference feel model getting too heavy may want use quick-filling Silkspan instead Any joints cracks filled properly will likely show up later date As model ages paint may shrink reveal cracks may have filled sufficiently recommended use two three coats sanding sealer primers ob tain smooth surface finishing paints details sure wood grain filled before attempting detail sur face because very few actual planes have wood grain showing through points judge will look Having poor quality finish would enter two different judging categories finishing workmanship fidelity scale So thing could lose quite few points done properly continued page 83 well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 30, 83
Control Line UNLESS YOU ARE lucky enough live South winter have put away flying equipment started winter building project Minnesota winters give lot time some serious building So mind Id like review some thoughts tech niques building finishing detailing scale model major factors good scale model wing loading weight versus square inches want keep weight light possible per square inch especially true small model would have less wing area best way keep model light just over build often strong temptation make model overly strengthened withstand abnormal abuse recom mend hollowing out blocks especially aft rear section reducing Mike Stott weight section will eliminate hav ing add lot extra nose weight bal ance model later Another good place reduce weight would use triangles instead square stringers corner fuselage use triangle provides same glueing area gives same strength glue joint square stringer square stringer normally runs between formers can carved out before installing formers Only carve out sections stringers attached formers need full stringer attach former order have properly aligned formers try cutting out centers Cut opening close edge former can having bend break Also try technique ribs Ive found recommended around landing gear mounting blocks supports sure cut weight reducing openings ply wood formers plywood very strong openings cut out exception rule course firewall weight can save during basic construction will allow add detail sacrificing good flying characteristics finishing model greatly left up individuals own techniques basic thing remember have cracks joints filled sanded smooth before covering like use silk scale models covering material Silk lends strength Silkspan does take little filler will add some additional weight think its worth difference feel model getting too heavy may want use quick-filling Silkspan instead Any joints cracks filled properly will likely show up later date As model ages paint may shrink reveal cracks may have filled sufficiently recommended use two three coats sanding sealer primers ob tain smooth surface finishing paints details sure wood grain filled before attempting detail sur face because very few actual planes have wood grain showing through points judge will look Having poor quality finish would enter two different judging categories finishing workmanship fidelity scale So thing could lose quite few points done properly continued page 83 well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014