a truly OdIstabIe handle Now possible alter both rate force required adjustments handle during flight improve maneuvers 1111 can avoid compromise trimming airplane Robert Baron DEVELOPED THE adjustable Ucontrol handle control-line stunt flying about seven years ago realized need precise control possible commercial handles adjustable handle course ap plicable U-control flying seek ing improved flying qualities may ask adjustable handle necessary useful Lets look typical instance control-line stunt plane past standard control sys tem hooked commercial handle proceeded trim out ship response too fast added nose weight conversely added tail weight th ship too sluggish meth od has virtue simplicity has little else offer far obtaining performance given ship moment let us assume leadout attachment point located prop erly above instance plane could actually balanced properly too fast control system would make air plane appear tail heavy Adding nose weight such plane would compro mising its performance get proper con trol response feel situation also commonly encountered U-con trol combat planes control system could slowed down plane could made feel right changing center gravity Enter adjustable control handle adjustable control handle possible alter both rate force required control system chang ing line spacing Fig 1 dimension rate can changed wider spacing creases rate changing overhang Fig 1 dimension B force can changed longer overhang increases force required actual practice have found keeping dimension B minimum has worked best unnecessary overhang increases effort fly consequently fatiguing Dimension line width very critical change can easily felt knobs top bottom handle allow neutral position set exactly plane flight feature makes possible set handle neutral position precisely very few flights knob should used fine adjustments Changes line length best done coarse adjustment han dle shown weighs four ounces weight really negligible flying control-line stunter could built slightly lighter building handle core balsa ply rather solid pine weight saving would less half ounce should remembered however handle must able withstand considerable pull-test de pending type aircraft being flown 52 Model Aviation Any handle must feel comfortable hand changing line spacing rate response can changedwider spacing increases rate changing overhang Inote adjustable knobs above below handl force changed Longer overhang increases required force Handle Construction handle cross bar made piece inch 2024 aluminum slots milled cut out Dremel tool screws /4-20 aluminum obtained surplus store handle core cut 9/16 inch soft pine holes should drilled drill press since must parallel handle work smoothly core round ed sanded comfortable fit Microballoons K&B resin mixed form paste Spread paste han dle grasp handle would flying Hold until resin sets up let go gently disturb pattern After resin fully cured sand Dremel off sharp edges handle must smooth will quite uncomfortable holding heavy plane line guides made cut-up nylon bellcrank cable can heavy leadout wire similar braided wire holes line guides should drilled chamfered prevent chafing cable adjust ment knobs camera case knobs knobs hold camera case cut off tapped way through available camera shops Almost camera case knobs -20 threads /4-20 thread adjustment screws happy bal ance precision relatively fast ad justment Two complete turns knob will shorten line tenth inch trim change can readily felt Trimming Plane Handle trimming control-line stunt plane adjustable leadouts tip weight essential top performance first step make sure engine running same speed up right inverted case shim tank engine up down get equal speeds both directions Next have spotter outside circle check wings level both upright inverted case wing must steamed eliminate warps Make very sure flaps exactly parallel other outboard wing high both upright inverted tip weight needed course less needed outboard wing low both ways Next balance point center grav ity found flying plane vari ous weights nose tail best checks proper CG location watch ship glide prior land ing ship assumes nose-up attitude likely tail heavy glide fairly flat relatively little up-control required CG good lot up required ship nose heavy Natural ly e judgment requires experiencc assess accurately Once CG located balance weights should permanently epoxied fuselage far forward aft practical Finally adjustable line guide moved around find best location Move steps inch too far back ship will very stable level outs too far forward ship will fly flight lose speed excessively ma- through maneuvers crisply will neuvers may also lose line tension lose line tension certain places such result loss air speed lead- top vertical eight hourglass April 1977 53 handle seen circle side makes apparent method line spacing can adjustedits familiar principle knobs allow neutral quickly set plane flightuse fine adjustments weight handle about 4 ounces Seen fliers side adjustment features can easily seen cross checking comments article detailed sketches youll find handle will have quite effect flying may correct feel changing CG position figure Again judgment decision experience best teacher may have noticed up until point have neglected very important variableline length Once above trim adjustments have made around arbitrary line length say 65 feet should developing feel what plane can stand far line length con cerned prefer use competition limit 70 feet because gives room pattern makes flight ap pear slower smoother Longer lines however make accurate flying diffi cult because greater distance trav eled maneuver plane has flown various line lengths deter what best both plane pilot Two-foot changes significant suggested try number line lengths point plane properly trimmed should turning well maintaining adequate line tension maneuvers Now time adjust line spacing simply matter increasing line spacing want quicker response decreasing spacing want slower controls setting neutral point flying -a few standard ma neuvers makes easy example consistently pull out low inside squares high outside squares need up handle turn top knob clockwise turn two repeat maneuvers flying consistently will literally able dial handle exact setting flying Once desired setting found handle adjustment can locked -20 locking nut fliers have already used han dle found improve flying precision enjoyment find particu larly useful test flying other modelers planes Within reason almost trimmedout planes can adjusted per sonal preference control response adjusting handle Since handles molded hand am assured comfortable grip whenever flying planes other own hope find adjustable U-control handle handy have over years 7/64 4-40 SCREW 4-40 BLIND NUT ADJUSTABLE CONTROL LINE HANDLE 1/4-20 NUT ADJUST LOCKI 1/4 HOLE 1/16 HOLE CHAMFER BOTH SIDES GUIDE NYLON BLOCK5/32 SOFT PINE 7/64 HOLE 1/16 BRASS CABLE CLAMP 1/B 2024 ALUM K 0 1/16 CABLE K CLEAR FOR 4-40 SCREW 4-40 SCREW 4-40 WASHER 1/4-20 NUT1/4-20CAMERA CASE KNOB ALUMINUM BOLT 54 Model Aviation handle custom fit hand paste microballoons K&B resin spread handle grasped flying until resin sets up released gently
Edition: Model Aviation - 1977/04
Page Numbers: 52, 53, 54
a truly OdIstabIe handle Now possible alter both rate force required adjustments handle during flight improve maneuvers 1111 can avoid compromise trimming airplane Robert Baron DEVELOPED THE adjustable Ucontrol handle control-line stunt flying about seven years ago realized need precise control possible commercial handles adjustable handle course ap plicable U-control flying seek ing improved flying qualities may ask adjustable handle necessary useful Lets look typical instance control-line stunt plane past standard control sys tem hooked commercial handle proceeded trim out ship response too fast added nose weight conversely added tail weight th ship too sluggish meth od has virtue simplicity has little else offer far obtaining performance given ship moment let us assume leadout attachment point located prop erly above instance plane could actually balanced properly too fast control system would make air plane appear tail heavy Adding nose weight such plane would compro mising its performance get proper con trol response feel situation also commonly encountered U-con trol combat planes control system could slowed down plane could made feel right changing center gravity Enter adjustable control handle adjustable control handle possible alter both rate force required control system chang ing line spacing Fig 1 dimension rate can changed wider spacing creases rate changing overhang Fig 1 dimension B force can changed longer overhang increases force required actual practice have found keeping dimension B minimum has worked best unnecessary overhang increases effort fly consequently fatiguing Dimension line width very critical change can easily felt knobs top bottom handle allow neutral position set exactly plane flight feature makes possible set handle neutral position precisely very few flights knob should used fine adjustments Changes line length best done coarse adjustment han dle shown weighs four ounces weight really negligible flying control-line stunter could built slightly lighter building handle core balsa ply rather solid pine weight saving would less half ounce should remembered however handle must able withstand considerable pull-test de pending type aircraft being flown 52 Model Aviation Any handle must feel comfortable hand changing line spacing rate response can changedwider spacing increases rate changing overhang Inote adjustable knobs above below handl force changed Longer overhang increases required force Handle Construction handle cross bar made piece inch 2024 aluminum slots milled cut out Dremel tool screws /4-20 aluminum obtained surplus store handle core cut 9/16 inch soft pine holes should drilled drill press since must parallel handle work smoothly core round ed sanded comfortable fit Microballoons K&B resin mixed form paste Spread paste han dle grasp handle would flying Hold until resin sets up let go gently disturb pattern After resin fully cured sand Dremel off sharp edges handle must smooth will quite uncomfortable holding heavy plane line guides made cut-up nylon bellcrank cable can heavy leadout wire similar braided wire holes line guides should drilled chamfered prevent chafing cable adjust ment knobs camera case knobs knobs hold camera case cut off tapped way through available camera shops Almost camera case knobs -20 threads /4-20 thread adjustment screws happy bal ance precision relatively fast ad justment Two complete turns knob will shorten line tenth inch trim change can readily felt Trimming Plane Handle trimming control-line stunt plane adjustable leadouts tip weight essential top performance first step make sure engine running same speed up right inverted case shim tank engine up down get equal speeds both directions Next have spotter outside circle check wings level both upright inverted case wing must steamed eliminate warps Make very sure flaps exactly parallel other outboard wing high both upright inverted tip weight needed course less needed outboard wing low both ways Next balance point center grav ity found flying plane vari ous weights nose tail best checks proper CG location watch ship glide prior land ing ship assumes nose-up attitude likely tail heavy glide fairly flat relatively little up-control required CG good lot up required ship nose heavy Natural ly e judgment requires experiencc assess accurately Once CG located balance weights should permanently epoxied fuselage far forward aft practical Finally adjustable line guide moved around find best location Move steps inch too far back ship will very stable level outs too far forward ship will fly flight lose speed excessively ma- through maneuvers crisply will neuvers may also lose line tension lose line tension certain places such result loss air speed lead- top vertical eight hourglass April 1977 53 handle seen circle side makes apparent method line spacing can adjustedits familiar principle knobs allow neutral quickly set plane flightuse fine adjustments weight handle about 4 ounces Seen fliers side adjustment features can easily seen cross checking comments article detailed sketches youll find handle will have quite effect flying may correct feel changing CG position figure Again judgment decision experience best teacher may have noticed up until point have neglected very important variableline length Once above trim adjustments have made around arbitrary line length say 65 feet should developing feel what plane can stand far line length con cerned prefer use competition limit 70 feet because gives room pattern makes flight ap pear slower smoother Longer lines however make accurate flying diffi cult because greater distance trav eled maneuver plane has flown various line lengths deter what best both plane pilot Two-foot changes significant suggested try number line lengths point plane properly trimmed should turning well maintaining adequate line tension maneuvers Now time adjust line spacing simply matter increasing line spacing want quicker response decreasing spacing want slower controls setting neutral point flying -a few standard ma neuvers makes easy example consistently pull out low inside squares high outside squares need up handle turn top knob clockwise turn two repeat maneuvers flying consistently will literally able dial handle exact setting flying Once desired setting found handle adjustment can locked -20 locking nut fliers have already used han dle found improve flying precision enjoyment find particu larly useful test flying other modelers planes Within reason almost trimmedout planes can adjusted per sonal preference control response adjusting handle Since handles molded hand am assured comfortable grip whenever flying planes other own hope find adjustable U-control handle handy have over years 7/64 4-40 SCREW 4-40 BLIND NUT ADJUSTABLE CONTROL LINE HANDLE 1/4-20 NUT ADJUST LOCKI 1/4 HOLE 1/16 HOLE CHAMFER BOTH SIDES GUIDE NYLON BLOCK5/32 SOFT PINE 7/64 HOLE 1/16 BRASS CABLE CLAMP 1/B 2024 ALUM K 0 1/16 CABLE K CLEAR FOR 4-40 SCREW 4-40 SCREW 4-40 WASHER 1/4-20 NUT1/4-20CAMERA CASE KNOB ALUMINUM BOLT 54 Model Aviation handle custom fit hand paste microballoons K&B resin spread handle grasped flying until resin sets up released gently
Edition: Model Aviation - 1977/04
Page Numbers: 52, 53, 54
a truly OdIstabIe handle Now possible alter both rate force required adjustments handle during flight improve maneuvers 1111 can avoid compromise trimming airplane Robert Baron DEVELOPED THE adjustable Ucontrol handle control-line stunt flying about seven years ago realized need precise control possible commercial handles adjustable handle course ap plicable U-control flying seek ing improved flying qualities may ask adjustable handle necessary useful Lets look typical instance control-line stunt plane past standard control sys tem hooked commercial handle proceeded trim out ship response too fast added nose weight conversely added tail weight th ship too sluggish meth od has virtue simplicity has little else offer far obtaining performance given ship moment let us assume leadout attachment point located prop erly above instance plane could actually balanced properly too fast control system would make air plane appear tail heavy Adding nose weight such plane would compro mising its performance get proper con trol response feel situation also commonly encountered U-con trol combat planes control system could slowed down plane could made feel right changing center gravity Enter adjustable control handle adjustable control handle possible alter both rate force required control system chang ing line spacing Fig 1 dimension rate can changed wider spacing creases rate changing overhang Fig 1 dimension B force can changed longer overhang increases force required actual practice have found keeping dimension B minimum has worked best unnecessary overhang increases effort fly consequently fatiguing Dimension line width very critical change can easily felt knobs top bottom handle allow neutral position set exactly plane flight feature makes possible set handle neutral position precisely very few flights knob should used fine adjustments Changes line length best done coarse adjustment han dle shown weighs four ounces weight really negligible flying control-line stunter could built slightly lighter building handle core balsa ply rather solid pine weight saving would less half ounce should remembered however handle must able withstand considerable pull-test de pending type aircraft being flown 52 Model Aviation Any handle must feel comfortable hand changing line spacing rate response can changedwider spacing increases rate changing overhang Inote adjustable knobs above below handl force changed Longer overhang increases required force Handle Construction handle cross bar made piece inch 2024 aluminum slots milled cut out Dremel tool screws /4-20 aluminum obtained surplus store handle core cut 9/16 inch soft pine holes should drilled drill press since must parallel handle work smoothly core round ed sanded comfortable fit Microballoons K&B resin mixed form paste Spread paste han dle grasp handle would flying Hold until resin sets up let go gently disturb pattern After resin fully cured sand Dremel off sharp edges handle must smooth will quite uncomfortable holding heavy plane line guides made cut-up nylon bellcrank cable can heavy leadout wire similar braided wire holes line guides should drilled chamfered prevent chafing cable adjust ment knobs camera case knobs knobs hold camera case cut off tapped way through available camera shops Almost camera case knobs -20 threads /4-20 thread adjustment screws happy bal ance precision relatively fast ad justment Two complete turns knob will shorten line tenth inch trim change can readily felt Trimming Plane Handle trimming control-line stunt plane adjustable leadouts tip weight essential top performance first step make sure engine running same speed up right inverted case shim tank engine up down get equal speeds both directions Next have spotter outside circle check wings level both upright inverted case wing must steamed eliminate warps Make very sure flaps exactly parallel other outboard wing high both upright inverted tip weight needed course less needed outboard wing low both ways Next balance point center grav ity found flying plane vari ous weights nose tail best checks proper CG location watch ship glide prior land ing ship assumes nose-up attitude likely tail heavy glide fairly flat relatively little up-control required CG good lot up required ship nose heavy Natural ly e judgment requires experiencc assess accurately Once CG located balance weights should permanently epoxied fuselage far forward aft practical Finally adjustable line guide moved around find best location Move steps inch too far back ship will very stable level outs too far forward ship will fly flight lose speed excessively ma- through maneuvers crisply will neuvers may also lose line tension lose line tension certain places such result loss air speed lead- top vertical eight hourglass April 1977 53 handle seen circle side makes apparent method line spacing can adjustedits familiar principle knobs allow neutral quickly set plane flightuse fine adjustments weight handle about 4 ounces Seen fliers side adjustment features can easily seen cross checking comments article detailed sketches youll find handle will have quite effect flying may correct feel changing CG position figure Again judgment decision experience best teacher may have noticed up until point have neglected very important variableline length Once above trim adjustments have made around arbitrary line length say 65 feet should developing feel what plane can stand far line length con cerned prefer use competition limit 70 feet because gives room pattern makes flight ap pear slower smoother Longer lines however make accurate flying diffi cult because greater distance trav eled maneuver plane has flown various line lengths deter what best both plane pilot Two-foot changes significant suggested try number line lengths point plane properly trimmed should turning well maintaining adequate line tension maneuvers Now time adjust line spacing simply matter increasing line spacing want quicker response decreasing spacing want slower controls setting neutral point flying -a few standard ma neuvers makes easy example consistently pull out low inside squares high outside squares need up handle turn top knob clockwise turn two repeat maneuvers flying consistently will literally able dial handle exact setting flying Once desired setting found handle adjustment can locked -20 locking nut fliers have already used han dle found improve flying precision enjoyment find particu larly useful test flying other modelers planes Within reason almost trimmedout planes can adjusted per sonal preference control response adjusting handle Since handles molded hand am assured comfortable grip whenever flying planes other own hope find adjustable U-control handle handy have over years 7/64 4-40 SCREW 4-40 BLIND NUT ADJUSTABLE CONTROL LINE HANDLE 1/4-20 NUT ADJUST LOCKI 1/4 HOLE 1/16 HOLE CHAMFER BOTH SIDES GUIDE NYLON BLOCK5/32 SOFT PINE 7/64 HOLE 1/16 BRASS CABLE CLAMP 1/B 2024 ALUM K 0 1/16 CABLE K CLEAR FOR 4-40 SCREW 4-40 SCREW 4-40 WASHER 1/4-20 NUT1/4-20CAMERA CASE KNOB ALUMINUM BOLT 54 Model Aviation handle custom fit hand paste microballoons K&B resin spread handle grasped flying until resin sets up released gently