Using new Hytork 48 electric motor free flight has average duration three tofour minutesand convertible 02 gas power Hal Cover ELECTIIIIO -LUTE author finished model weighs four ounces has wing area 150 sq power system alone weighs 2-1/4 ounces THE PLANE called Electro-Lite developed test bed new very efficient motor author privilege working Hand Fasola designer Hytork 48 motor during its initial testings motor used Electro-Lite VL Products VL-I0I Flight System composed Ky tork 48 motor charge plug/switch battery pack system weighs 21/4 ounces generates approximately 4 ounces static thrust VL-l0l system now production available information contact VL Products 7023-D Canoga Ave Canoga Park Ca 91303 particular plane built evalu ate motor/battery combination endurance-type flying plane weighs four ounces has area 150 sq performed well about three flights ever landed dethermalizer bringing down 3- 4minute average During testing plane flown both right/right left/ left pattern equal success advis able though fly electric powered planes spiral climb because straight prop hanging climb does result efficient climb So generally fly plane up its wings An operation develops critical area accurate carefully monitored charging battery pack has much written sub ject push luck rate charge length likely blow battery Obviously much time should put design charging unit good battery charging source either NiCads lead acid battery should used system should include variable resistor adjusting charge good 5-minute timer electric cut-off Last least good amp-meter needed preferably 2 3 amp full scale set up battery packs can con sistently accurately charged harm flight pack under standing information needed proper battery charging system available Hytork electric motor Also believe ready-built can purchased motor amount charge can adjusted vary motor run timersuch tick-off can added Material Selection success models regardless type depends careful selection materials start mind As model construc tion projects thoroughly study plans understand Next select right type wood assembly sug gested wood used stabilizer light quarter-grain wood maximum strength minimum weight wood used laminated tips pylon covering should straight-grain 1/32 sheet leading edge stock should firm able take bump two sheet used fuselage can medium weight straight- quarter-grain balsa Special care should taken selecting 3/32 sq fuselage longerons should hard straight wing spar wood should firm straight along stab spar trailing edes can selected fairly light straight- quarter-grain wood Last least rib stock should good grade quar ter-grain 1/32 sheet except dihe dral center-section ribs should firm straight-grain 1/16 sheet Wing Construction first step lamination tips done cut ting 10 strips straight-grain 1/32 sheet 28 Model Aviation charging box used author system used includes variable resistor adjusting charge 5-minute timer electric cut-off good amp meter 2 3 needed Charging source either Nicads lead-acid battery Note fuse DT Electro-Lite 8 long 3/16 wide Next take thick piece cardboard old balsa 4 wide about 4 6 long Carefully cut 4 semi circle end sand smooth right angles surfaces tip template Laminate five pieces 1/32 sheet using Titebond similar glue Make sure no glue either ner surface layer outer surface layer five outside layer Proceed tightly taping end five layer lamination form using l-wide masking tape making sure approximately centered end form Now carefully pull five layers around fon never letting off pressure might cause lay ers buckle once lamination tightly pulled around template tape other end down firmly wipe off excess glue allow dry remove make second tip same way Cut out 28 diagonal ribs 1/32 sheet 3 WI 1/16 sheet Splice laminated tips 3/16 sq leading edge 1/8 X ling edge Allow dry shape roughly Pin down both laminated tip outlines center section leading trailing edge wing ribs positioned follows start tip place full length rib place repeating until wing has half its ribs place W pattern carefully cut remaining half diagonal ribs half dotted line shown plans Use small triangle similar tool cut right angles ribs bottom surface Proceed gluing ribs place dry remove plans block up tips 3 inches carefully sand dihedral angle leading edge trailing edge Sand ends center section square flat no dihedral angle Now block up tips glue center section add three WI ribs spars will added after step thor oughly dry place spars wing straight edge laid wing upper center section directly over diag onal rib intersections notch cut 1/16 deep 3/16 wide same operation performed bot tom wing tip spars done similar manner except notches 1/16 wide 1/16 deep spars now may glued place shown plans slight overlap Wl ribs dry wing may sanded thoroughly glue joints inspected touched up Stab stabilizer built man ner similar wing except instead laminated tip ribs TI used end Also will note spar top stabilizer Rudder made light quartergrain 3/32 sq ribs Care should exer cised construction no warps develop structure after covering Fuselage Build two sides top other using light 3/32 sheet firm hard 3/32 squares dry remove plans separate two halves Glue two halves together shown top view allow dry Build pylon shown using light 1/16 sheet former former B Use 1/6 X 3/16 front rear pylon uprights use 3/32 sq two side supports dry cover 1/32 sheet grain running vertically Add ngle stock nose shown Hollow out slightly fit elec tric motor Cut out opening charger plugs/switch either side fuselage according easier launch methods Sand basic fuse lage structure add tail platform shown Carefully align pylon fuselage glue place Add /6 dia meter hardwood wing mount dowels shown lightly coat glue several times Finishing Airplane original covered orange blue tissue quite visible under flying conditions Dope framework coat 50/50 dope/thinner Nitrate dope also will nicely since have no fuel problems dry re-dope surfaces second time lightly sand Cover tissue lightly water spray remove wrinkles Two 50/50 dope/thinner mixture coats used stab rudder three being used fuselage wing decorations added cut tissue apply surfaces after first coat dope Two items would recommend plane follows dethermalizer shown plans definitely put name AMA numbers model Motor Equipment Installation Both motor charger plug may stalled wood screws although would suggest removing screws after initial installation filling holes glue immediately re-installing gives firm base screws makes installation permanent enough need nut-and-bolt-type installation Mount battery pack foam inside pylon wherever necessary obtain proper balance shown plans Note 3/32 ply tirewall gives extra purchase mounting screws Flying easiest step original flew right off board no adjustments climbed right spiral wide-open right glide careful use rudder stab tilt plane can made fly right/right left/left combination including straight Gas Coniersion Electro-Lite may converted 020 power making 3/32 plywood firewall 1-5/16 X 1-5/16 gluing nose same loca tion shown plans electric motor plane would require additional coat dope followed coat good fuel proofer use hu tyrate dope fuel proof beginning gas tank 020 engine may eyedropper mounted side fuselage TD 020 used timer could mounted along TD 020 tank 3/16 diameter wire skid should made mounted between engine firewall skid should 3 long curved back end 30 Model Aviation model jumps off ground VTO can flown left-left right-right pattern straight power turn yields best results Motor wing-mounting details show clearly photo geodetic structure wing its diagonal ribs warp resistant approximately four ounces thrust equal models grass weight makes possible vertical-type takeoffs
Edition: Model Aviation - 1975/10
Page Numbers: 28, 30
Using new Hytork 48 electric motor free flight has average duration three tofour minutesand convertible 02 gas power Hal Cover ELECTIIIIO -LUTE author finished model weighs four ounces has wing area 150 sq power system alone weighs 2-1/4 ounces THE PLANE called Electro-Lite developed test bed new very efficient motor author privilege working Hand Fasola designer Hytork 48 motor during its initial testings motor used Electro-Lite VL Products VL-I0I Flight System composed Ky tork 48 motor charge plug/switch battery pack system weighs 21/4 ounces generates approximately 4 ounces static thrust VL-l0l system now production available information contact VL Products 7023-D Canoga Ave Canoga Park Ca 91303 particular plane built evalu ate motor/battery combination endurance-type flying plane weighs four ounces has area 150 sq performed well about three flights ever landed dethermalizer bringing down 3- 4minute average During testing plane flown both right/right left/ left pattern equal success advis able though fly electric powered planes spiral climb because straight prop hanging climb does result efficient climb So generally fly plane up its wings An operation develops critical area accurate carefully monitored charging battery pack has much written sub ject push luck rate charge length likely blow battery Obviously much time should put design charging unit good battery charging source either NiCads lead acid battery should used system should include variable resistor adjusting charge good 5-minute timer electric cut-off Last least good amp-meter needed preferably 2 3 amp full scale set up battery packs can con sistently accurately charged harm flight pack under standing information needed proper battery charging system available Hytork electric motor Also believe ready-built can purchased motor amount charge can adjusted vary motor run timersuch tick-off can added Material Selection success models regardless type depends careful selection materials start mind As model construc tion projects thoroughly study plans understand Next select right type wood assembly sug gested wood used stabilizer light quarter-grain wood maximum strength minimum weight wood used laminated tips pylon covering should straight-grain 1/32 sheet leading edge stock should firm able take bump two sheet used fuselage can medium weight straight- quarter-grain balsa Special care should taken selecting 3/32 sq fuselage longerons should hard straight wing spar wood should firm straight along stab spar trailing edes can selected fairly light straight- quarter-grain wood Last least rib stock should good grade quar ter-grain 1/32 sheet except dihe dral center-section ribs should firm straight-grain 1/16 sheet Wing Construction first step lamination tips done cut ting 10 strips straight-grain 1/32 sheet 28 Model Aviation charging box used author system used includes variable resistor adjusting charge 5-minute timer electric cut-off good amp meter 2 3 needed Charging source either Nicads lead-acid battery Note fuse DT Electro-Lite 8 long 3/16 wide Next take thick piece cardboard old balsa 4 wide about 4 6 long Carefully cut 4 semi circle end sand smooth right angles surfaces tip template Laminate five pieces 1/32 sheet using Titebond similar glue Make sure no glue either ner surface layer outer surface layer five outside layer Proceed tightly taping end five layer lamination form using l-wide masking tape making sure approximately centered end form Now carefully pull five layers around fon never letting off pressure might cause lay ers buckle once lamination tightly pulled around template tape other end down firmly wipe off excess glue allow dry remove make second tip same way Cut out 28 diagonal ribs 1/32 sheet 3 WI 1/16 sheet Splice laminated tips 3/16 sq leading edge 1/8 X ling edge Allow dry shape roughly Pin down both laminated tip outlines center section leading trailing edge wing ribs positioned follows start tip place full length rib place repeating until wing has half its ribs place W pattern carefully cut remaining half diagonal ribs half dotted line shown plans Use small triangle similar tool cut right angles ribs bottom surface Proceed gluing ribs place dry remove plans block up tips 3 inches carefully sand dihedral angle leading edge trailing edge Sand ends center section square flat no dihedral angle Now block up tips glue center section add three WI ribs spars will added after step thor oughly dry place spars wing straight edge laid wing upper center section directly over diag onal rib intersections notch cut 1/16 deep 3/16 wide same operation performed bot tom wing tip spars done similar manner except notches 1/16 wide 1/16 deep spars now may glued place shown plans slight overlap Wl ribs dry wing may sanded thoroughly glue joints inspected touched up Stab stabilizer built man ner similar wing except instead laminated tip ribs TI used end Also will note spar top stabilizer Rudder made light quartergrain 3/32 sq ribs Care should exer cised construction no warps develop structure after covering Fuselage Build two sides top other using light 3/32 sheet firm hard 3/32 squares dry remove plans separate two halves Glue two halves together shown top view allow dry Build pylon shown using light 1/16 sheet former former B Use 1/6 X 3/16 front rear pylon uprights use 3/32 sq two side supports dry cover 1/32 sheet grain running vertically Add ngle stock nose shown Hollow out slightly fit elec tric motor Cut out opening charger plugs/switch either side fuselage according easier launch methods Sand basic fuse lage structure add tail platform shown Carefully align pylon fuselage glue place Add /6 dia meter hardwood wing mount dowels shown lightly coat glue several times Finishing Airplane original covered orange blue tissue quite visible under flying conditions Dope framework coat 50/50 dope/thinner Nitrate dope also will nicely since have no fuel problems dry re-dope surfaces second time lightly sand Cover tissue lightly water spray remove wrinkles Two 50/50 dope/thinner mixture coats used stab rudder three being used fuselage wing decorations added cut tissue apply surfaces after first coat dope Two items would recommend plane follows dethermalizer shown plans definitely put name AMA numbers model Motor Equipment Installation Both motor charger plug may stalled wood screws although would suggest removing screws after initial installation filling holes glue immediately re-installing gives firm base screws makes installation permanent enough need nut-and-bolt-type installation Mount battery pack foam inside pylon wherever necessary obtain proper balance shown plans Note 3/32 ply tirewall gives extra purchase mounting screws Flying easiest step original flew right off board no adjustments climbed right spiral wide-open right glide careful use rudder stab tilt plane can made fly right/right left/left combination including straight Gas Coniersion Electro-Lite may converted 020 power making 3/32 plywood firewall 1-5/16 X 1-5/16 gluing nose same loca tion shown plans electric motor plane would require additional coat dope followed coat good fuel proofer use hu tyrate dope fuel proof beginning gas tank 020 engine may eyedropper mounted side fuselage TD 020 used timer could mounted along TD 020 tank 3/16 diameter wire skid should made mounted between engine firewall skid should 3 long curved back end 30 Model Aviation model jumps off ground VTO can flown left-left right-right pattern straight power turn yields best results Motor wing-mounting details show clearly photo geodetic structure wing its diagonal ribs warp resistant approximately four ounces thrust equal models grass weight makes possible vertical-type takeoffs