OVER THE PAST FEW years experi ments use flat surgical rubber hinging ailerons flaps elevator rudder model Sailplanes have proven highly successful aircraft dozen number have ranged competi tion thermal ships racing birds flown 50 mph winds Working out proper steps installing hinges has involved considerable trial error years field experience now behind Im convinced superior-quality rub ber makes practical fineworking hinge offering wide range RC application Among materials advantages following 1 Surfaces can butt fit face face flush other no need bevel round off provide space deflection hinges stretch allow pivoting sur face edges 2 The hinge line sealed simple butt fit 3 The hinges can installed under ten sion keeps surfaces contact sists return neutral position helps eliminate flutter caused slop 4 The method installation ensures hinges under tension some rubber free stretch during deflec tion avoids excessive current drain 5 The hinges can installed surfaces Amazing RUbber Hinges U Harley Michaelis Innovation name game building better simpler aircraft hinges made surgical rubber automatically create sealed hinge line will benefit model about A-in thickness upwards adaptable structure size 6 They work equally well beveled tapered surfaces structures uniform thickness 7 Theyre suitable open-frame sheeted-frame skinned-foam structures 8 The hinges durable Theyre inher ently tough addition will ex posed elements properly stalled 9 Because stretch during deflection permits spacing surfaces covering painting may completed after installa tion Appearance compares favorably hinging done after covering painting per conventional practice 10 They flexible known type one-piece hinge As source surgical rubber have using strapping urinary leg bag medical supply item package two selling about $450 makes 48 hinges approximately 1 1A long % wide rubber bit over / thick Note however different grades rubber used strapping sure get dark amber colored mate rial used high-quality hi-starts lighter colored stuff quickiy deteriorates 34 Model Aviation have approached prominent US RC man ufacturer about packaging material form best suited use luck Harleys Hinges may available hobby outlets close time article sees print installation concept hinges simple attached first side hinge line other side under litfie tension suffi cient relaxation some rubber free stretch during deflection Paste wax used avoid unwanted bonding accompa nying photos show techniques used little practice can quickly come expert Photo 1 shows strap various common items used install hinges left waxed stick A-in ply strip /64 ply block sandpaper strip smoothed piece 030 aluminum dowel handle essential Zap cy anoacrylate CyA have tiny spout controlled application hinges must cut clean nonragged edges sharp scissors seems best Photo 2 Practice making centered slots A-in scrap balsa Metal fingernail files make good tools slots should just big enough allow hinges slipped fingers fall out Use syringe apply water swell wood necessary Apply bit Zap side let wick hinges must floppy excess must removed debonder Photo 3 properly Zapped hinge serted will withstand extreme stretch tension used anchoring other surface negligible compared Slots centered balsa would typically used fin/rudder stab/elevator hing ing Rather balsa being uncovered shown practice fin stab would finished slots would made right through covering covering MonoKote type tool dowel handle shown first photos would heated against iron poked July 1988 35 slot neatly heat seal edges other hand fin solid glassed slots would worked deep marked insertion hinges would Zapped place us ual manner rudder elevator open frame MonoKote would applied side front Slots would cut sealed hinges slipped through bent 90 ed rear face Since deflection produces little addi tional tension thinner surfaces small amount rubber would have free stretch Photos 4 5 6 solid balsa fin has glassed painted MonoKoted rudder balsa frame skinned Y32 balsa Note fine closed fit Slots deep anchoring hinges made fin after finished flap white MonoKote hides attached fin part single piece has tached closed side rudder front slots cut rudder edges heat sealed hinges passed through Next using waxed stick hold end down hinges stretched rearward bonded skin other skin flap MonoKote attached Photo 7 sandpaper strip thicker rubber just hair used make notches beveled tapered strips along aileron flap hinge line sheeting skins fit over mem bers notches cut simultaneously both strips before attached Sheeting fonus other side slots hinges bonded first side passed over other strip bonded again distance beyond leaving some rubber free stretch rather being positioned between sheeting beveled strips full thick ness wing method must used make slots uniform height done supporting slotting tool shim A-in ply 3A6-in ply etc way slots both sides will align ment other Photo 8 foam-core wing panel viewed its underside items have glassed filled ready paint including bottom aileron skin shown Prenotched 1A-in beveled tapered strips positioned between skins Hinges ailerons best fitted just under top skin Up deflection imparts negligible additional tension Down being slight due differential also has little ef fect Hinges have Zapped-in 14 deep up front Note core pieces have removed behind slots strip done before attached top skin Swingee Ace RC pro trudes slip receptacle aileron Photo 9 Wax applied top bot tom hinge Extend waxing out about 14 reduce abrasion avoid unintentional bonding rubber Continued page 128 36 Model Aviation WANNA RACE LtflDTUAQT AnA BEGINNER RACES r 0-500 -i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 611 528-4043 203 613-2000 beef up structure would add excess weight degrade performance Setup flying youve kept weight down FW-190 will fly very well no bad habits Takeoffs quite straight absolutely no ground looping bit corrective right rudder needed sus pect wide-spaced mains largely re sponsible its good manners ground model will rise-off-ground ROG reaches flying speed eleva tor input Once clears ground little elevator healthy 40 will give good climbout Landings easy man age also Drop gear practice ap proaches gradually slowing accepta ble landing speed Use rudder keep straight slows approach Youll find airplane will slow down nicely out threatening stall first flights followed conven tional practice pairing 10 x 6 prop 40 engine experimentation quickly taught other prop sizes work better model 12 x 4 Zinger seems give best pull 11 x 6 seems bet ter speed moral Experiment different prop diameters pitches aircraft its clean lines easygoing flying disposition FW-190 makes good choice workbench next building season too demanding build very satisfying flying field Radio Technique/Myers Continued page 33 Im ask 2-6 mixer puts flaps opposite elevator like Ukie Stunt model flaps elevator cant imagine youd want flaps going same way elevator unless take care some installation peculiarity reversing switches channels seems redundant 6-2 mixer puts neutral offset el evator channel whether flaps low ered Again strange use elevator trim flaps like trim proportional flap setting Mr Lanterman told mix ers will different soon servo construction looks pretty durable featuring 0-ring-sealed case brass-on-steel bearings critical locations splined shafts output wheels convenient size should adequate planes engines up 60 size though might too big narrrow-fuselage Sailplane like Sagitta realize getting narrowband FM seven-channel system mixing/reversing features four servos Ni-Cds neck strap charger about $165 retail think wont have much excuse hanging onto old set keep trying convert $10 Look way isnt cost radio thats important its cost repairs after crash Hinges/Michaelis Continued page 36 want free stretch Photo 10 tweezers used poke pull hinges through aileron slots Photo 11 / ply strip used ap ply wax just behind slot avoid un wanted bonding Photo 12 moment truth Zap ap plied skin loose hinge end wrapped up against waxed stick under slight tension poised quickly jam down until glue fires much tension case about / right Use sharp blade remove excess hinge material Ap ply bit Zap needed until least bonded Photo 13 aileron spread scraps along hinge line bot tom can accurately positioned glued Photo 14 Depending care mak ing good butt fit hinge line can ex tremely fine Photo 15 shows flap installation Because hinges low such ar rangement full down deflection imparts negligible tension Up flap adds little tension hinges installed sufficient allowance stretch ef fect nominal Photo 16 just include JM Glascraft P-s ls like Penetrator used tip ailerons rubber hinges 128 Model Aviation CENTURY SYSTEMS OZ QUALITY PRODUCTS FROM DOWN UNDER Features snga 04 backup nafety equipment fur RIC modem Helicopter Gyro Fixed Wing Gyro Battery Cyciar Battery Checker Lost Modet Atarm Battery Backer 4 Channai Failsafe 2 Channel Mixer Muiti Charger Field Home Charger Electronic Switch Electronic Speed Control Thermal Cut-Oft Charger Send 01 postage free catalog PO BOx 4085 Costa Mesa Ca 02826 Phone 714 082-2480 DEALERS INOUIRIES WELCOME ZMA Name Street Address City StateZip HOWW BB INTERNATIONAL INC Swingees gets up about 75-80 mph high winds nary flutter aile rons both wing surfaces solid holes would have routed out partially side hinges could pulled through attached Use MonoKote its equivalent hide holes sure notches neat clean properly sized hinges can slipped hand fall out Note case flaps ailerons initial attachment hinges may done either side hinge line de cision fairly arbitrary though may determined observing what can best left open attach loose end photos show aileron bottom skin being laid after hinges Simi larly flap top skin might attached last fully top-sheeted frame structure leading edge bottom sheeting hinges could first anchored mov ing surface bottom covering still unsealed hinge loose ends would se cured underside top sheeting Aileron hinges could go directly onto sheet us ing flap hinges low could put ends little blocks glued sheeting keep better alignment slots foam wing fully sheeted top partially bottom pieces may cut out advance hinges attach rubber left free stretch easier will flap reflex upward aileron go downward Generally %-in hinge width practi cal sandpaper notching tool should 6 wider hinges dont rub against slot edges large aircraft hinges could wider Surgical rubber hinges strong dur able installation described will par tially shield elements Still its probably good idea keep ship shade possible protect rubber ultraviolet light attaching hinges painted sur faces sure solvents select cleaning up Zap ones wont harm paint Golden West Super Sol vent supplied Satellite City seems harm less test first painted scrap Swingees natural use rub ber hinges ailerons need modifica tion job best Dont judge early discontinued model Find newer opposing-set model black white Del rin Treat WD-40 loosen up get enough deflection pushrod must attach close Remove threads arm flatten exposed part %-in width between pieces flat hard steel %-in-sq-ID brass tubing make gauge 055 No 54 bit cen tered Use guide drill bit through Swingee arm matches stock K&S 055 wire makes good size pushrod end Just bend wire right angle slip hole Swingee arm wing skin will act retainer bent end inserted pointed away thin wing angled pin ends should filed down raised letters filed off vertical stops moving part interfere seating aileron hence should rounded front Swingee can lie tray made ply bottom blocks against either Swingee ends After gluing tray skin other structural member adhere Swingee tray Zap rear part slips receptacle built aileron glued As aileron deflects Swingee works out slight amount good receptacle formed 11/2 x 1 14-in pieces sheet aluminum bent slop bind thin N 1/2 wide Plug ends glue between sheeting shimmed arm points nearly straight forward aileron neutral Being entirely inter nal arrangement eliminates accre tion hardware causes slop hope ideas prove valuable have observations would interest address 26 5 Roosevelt Walla Walla WA 99362 Editor As go press just formed Ace RC researching sources properly formulated rubber pack aged sold Harleys Hinges SAFE FLYING IS NO ACCIDENT July 1988 129
Edition: Model Aviation - 1988/07
Page Numbers: 34, 35, 36, 128, 129
OVER THE PAST FEW years experi ments use flat surgical rubber hinging ailerons flaps elevator rudder model Sailplanes have proven highly successful aircraft dozen number have ranged competi tion thermal ships racing birds flown 50 mph winds Working out proper steps installing hinges has involved considerable trial error years field experience now behind Im convinced superior-quality rub ber makes practical fineworking hinge offering wide range RC application Among materials advantages following 1 Surfaces can butt fit face face flush other no need bevel round off provide space deflection hinges stretch allow pivoting sur face edges 2 The hinge line sealed simple butt fit 3 The hinges can installed under ten sion keeps surfaces contact sists return neutral position helps eliminate flutter caused slop 4 The method installation ensures hinges under tension some rubber free stretch during deflec tion avoids excessive current drain 5 The hinges can installed surfaces Amazing RUbber Hinges U Harley Michaelis Innovation name game building better simpler aircraft hinges made surgical rubber automatically create sealed hinge line will benefit model about A-in thickness upwards adaptable structure size 6 They work equally well beveled tapered surfaces structures uniform thickness 7 Theyre suitable open-frame sheeted-frame skinned-foam structures 8 The hinges durable Theyre inher ently tough addition will ex posed elements properly stalled 9 Because stretch during deflection permits spacing surfaces covering painting may completed after installa tion Appearance compares favorably hinging done after covering painting per conventional practice 10 They flexible known type one-piece hinge As source surgical rubber have using strapping urinary leg bag medical supply item package two selling about $450 makes 48 hinges approximately 1 1A long % wide rubber bit over / thick Note however different grades rubber used strapping sure get dark amber colored mate rial used high-quality hi-starts lighter colored stuff quickiy deteriorates 34 Model Aviation have approached prominent US RC man ufacturer about packaging material form best suited use luck Harleys Hinges may available hobby outlets close time article sees print installation concept hinges simple attached first side hinge line other side under litfie tension suffi cient relaxation some rubber free stretch during deflection Paste wax used avoid unwanted bonding accompa nying photos show techniques used little practice can quickly come expert Photo 1 shows strap various common items used install hinges left waxed stick A-in ply strip /64 ply block sandpaper strip smoothed piece 030 aluminum dowel handle essential Zap cy anoacrylate CyA have tiny spout controlled application hinges must cut clean nonragged edges sharp scissors seems best Photo 2 Practice making centered slots A-in scrap balsa Metal fingernail files make good tools slots should just big enough allow hinges slipped fingers fall out Use syringe apply water swell wood necessary Apply bit Zap side let wick hinges must floppy excess must removed debonder Photo 3 properly Zapped hinge serted will withstand extreme stretch tension used anchoring other surface negligible compared Slots centered balsa would typically used fin/rudder stab/elevator hing ing Rather balsa being uncovered shown practice fin stab would finished slots would made right through covering covering MonoKote type tool dowel handle shown first photos would heated against iron poked July 1988 35 slot neatly heat seal edges other hand fin solid glassed slots would worked deep marked insertion hinges would Zapped place us ual manner rudder elevator open frame MonoKote would applied side front Slots would cut sealed hinges slipped through bent 90 ed rear face Since deflection produces little addi tional tension thinner surfaces small amount rubber would have free stretch Photos 4 5 6 solid balsa fin has glassed painted MonoKoted rudder balsa frame skinned Y32 balsa Note fine closed fit Slots deep anchoring hinges made fin after finished flap white MonoKote hides attached fin part single piece has tached closed side rudder front slots cut rudder edges heat sealed hinges passed through Next using waxed stick hold end down hinges stretched rearward bonded skin other skin flap MonoKote attached Photo 7 sandpaper strip thicker rubber just hair used make notches beveled tapered strips along aileron flap hinge line sheeting skins fit over mem bers notches cut simultaneously both strips before attached Sheeting fonus other side slots hinges bonded first side passed over other strip bonded again distance beyond leaving some rubber free stretch rather being positioned between sheeting beveled strips full thick ness wing method must used make slots uniform height done supporting slotting tool shim A-in ply 3A6-in ply etc way slots both sides will align ment other Photo 8 foam-core wing panel viewed its underside items have glassed filled ready paint including bottom aileron skin shown Prenotched 1A-in beveled tapered strips positioned between skins Hinges ailerons best fitted just under top skin Up deflection imparts negligible additional tension Down being slight due differential also has little ef fect Hinges have Zapped-in 14 deep up front Note core pieces have removed behind slots strip done before attached top skin Swingee Ace RC pro trudes slip receptacle aileron Photo 9 Wax applied top bot tom hinge Extend waxing out about 14 reduce abrasion avoid unintentional bonding rubber Continued page 128 36 Model Aviation WANNA RACE LtflDTUAQT AnA BEGINNER RACES r 0-500 -i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 611 528-4043 203 613-2000 beef up structure would add excess weight degrade performance Setup flying youve kept weight down FW-190 will fly very well no bad habits Takeoffs quite straight absolutely no ground looping bit corrective right rudder needed sus pect wide-spaced mains largely re sponsible its good manners ground model will rise-off-ground ROG reaches flying speed eleva tor input Once clears ground little elevator healthy 40 will give good climbout Landings easy man age also Drop gear practice ap proaches gradually slowing accepta ble landing speed Use rudder keep straight slows approach Youll find airplane will slow down nicely out threatening stall first flights followed conven tional practice pairing 10 x 6 prop 40 engine experimentation quickly taught other prop sizes work better model 12 x 4 Zinger seems give best pull 11 x 6 seems bet ter speed moral Experiment different prop diameters pitches aircraft its clean lines easygoing flying disposition FW-190 makes good choice workbench next building season too demanding build very satisfying flying field Radio Technique/Myers Continued page 33 Im ask 2-6 mixer puts flaps opposite elevator like Ukie Stunt model flaps elevator cant imagine youd want flaps going same way elevator unless take care some installation peculiarity reversing switches channels seems redundant 6-2 mixer puts neutral offset el evator channel whether flaps low ered Again strange use elevator trim flaps like trim proportional flap setting Mr Lanterman told mix ers will different soon servo construction looks pretty durable featuring 0-ring-sealed case brass-on-steel bearings critical locations splined shafts output wheels convenient size should adequate planes engines up 60 size though might too big narrrow-fuselage Sailplane like Sagitta realize getting narrowband FM seven-channel system mixing/reversing features four servos Ni-Cds neck strap charger about $165 retail think wont have much excuse hanging onto old set keep trying convert $10 Look way isnt cost radio thats important its cost repairs after crash Hinges/Michaelis Continued page 36 want free stretch Photo 10 tweezers used poke pull hinges through aileron slots Photo 11 / ply strip used ap ply wax just behind slot avoid un wanted bonding Photo 12 moment truth Zap ap plied skin loose hinge end wrapped up against waxed stick under slight tension poised quickly jam down until glue fires much tension case about / right Use sharp blade remove excess hinge material Ap ply bit Zap needed until least bonded Photo 13 aileron spread scraps along hinge line bot tom can accurately positioned glued Photo 14 Depending care mak ing good butt fit hinge line can ex tremely fine Photo 15 shows flap installation Because hinges low such ar rangement full down deflection imparts negligible tension Up flap adds little tension hinges installed sufficient allowance stretch ef fect nominal Photo 16 just include JM Glascraft P-s ls like Penetrator used tip ailerons rubber hinges 128 Model Aviation CENTURY SYSTEMS OZ QUALITY PRODUCTS FROM DOWN UNDER Features snga 04 backup nafety equipment fur RIC modem Helicopter Gyro Fixed Wing Gyro Battery Cyciar Battery Checker Lost Modet Atarm Battery Backer 4 Channai Failsafe 2 Channel Mixer Muiti Charger Field Home Charger Electronic Switch Electronic Speed Control Thermal Cut-Oft Charger Send 01 postage free catalog PO BOx 4085 Costa Mesa Ca 02826 Phone 714 082-2480 DEALERS INOUIRIES WELCOME ZMA Name Street Address City StateZip HOWW BB INTERNATIONAL INC Swingees gets up about 75-80 mph high winds nary flutter aile rons both wing surfaces solid holes would have routed out partially side hinges could pulled through attached Use MonoKote its equivalent hide holes sure notches neat clean properly sized hinges can slipped hand fall out Note case flaps ailerons initial attachment hinges may done either side hinge line de cision fairly arbitrary though may determined observing what can best left open attach loose end photos show aileron bottom skin being laid after hinges Simi larly flap top skin might attached last fully top-sheeted frame structure leading edge bottom sheeting hinges could first anchored mov ing surface bottom covering still unsealed hinge loose ends would se cured underside top sheeting Aileron hinges could go directly onto sheet us ing flap hinges low could put ends little blocks glued sheeting keep better alignment slots foam wing fully sheeted top partially bottom pieces may cut out advance hinges attach rubber left free stretch easier will flap reflex upward aileron go downward Generally %-in hinge width practi cal sandpaper notching tool should 6 wider hinges dont rub against slot edges large aircraft hinges could wider Surgical rubber hinges strong dur able installation described will par tially shield elements Still its probably good idea keep ship shade possible protect rubber ultraviolet light attaching hinges painted sur faces sure solvents select cleaning up Zap ones wont harm paint Golden West Super Sol vent supplied Satellite City seems harm less test first painted scrap Swingees natural use rub ber hinges ailerons need modifica tion job best Dont judge early discontinued model Find newer opposing-set model black white Del rin Treat WD-40 loosen up get enough deflection pushrod must attach close Remove threads arm flatten exposed part %-in width between pieces flat hard steel %-in-sq-ID brass tubing make gauge 055 No 54 bit cen tered Use guide drill bit through Swingee arm matches stock K&S 055 wire makes good size pushrod end Just bend wire right angle slip hole Swingee arm wing skin will act retainer bent end inserted pointed away thin wing angled pin ends should filed down raised letters filed off vertical stops moving part interfere seating aileron hence should rounded front Swingee can lie tray made ply bottom blocks against either Swingee ends After gluing tray skin other structural member adhere Swingee tray Zap rear part slips receptacle built aileron glued As aileron deflects Swingee works out slight amount good receptacle formed 11/2 x 1 14-in pieces sheet aluminum bent slop bind thin N 1/2 wide Plug ends glue between sheeting shimmed arm points nearly straight forward aileron neutral Being entirely inter nal arrangement eliminates accre tion hardware causes slop hope ideas prove valuable have observations would interest address 26 5 Roosevelt Walla Walla WA 99362 Editor As go press just formed Ace RC researching sources properly formulated rubber pack aged sold Harleys Hinges SAFE FLYING IS NO ACCIDENT July 1988 129
Edition: Model Aviation - 1988/07
Page Numbers: 34, 35, 36, 128, 129
OVER THE PAST FEW years experi ments use flat surgical rubber hinging ailerons flaps elevator rudder model Sailplanes have proven highly successful aircraft dozen number have ranged competi tion thermal ships racing birds flown 50 mph winds Working out proper steps installing hinges has involved considerable trial error years field experience now behind Im convinced superior-quality rub ber makes practical fineworking hinge offering wide range RC application Among materials advantages following 1 Surfaces can butt fit face face flush other no need bevel round off provide space deflection hinges stretch allow pivoting sur face edges 2 The hinge line sealed simple butt fit 3 The hinges can installed under ten sion keeps surfaces contact sists return neutral position helps eliminate flutter caused slop 4 The method installation ensures hinges under tension some rubber free stretch during deflec tion avoids excessive current drain 5 The hinges can installed surfaces Amazing RUbber Hinges U Harley Michaelis Innovation name game building better simpler aircraft hinges made surgical rubber automatically create sealed hinge line will benefit model about A-in thickness upwards adaptable structure size 6 They work equally well beveled tapered surfaces structures uniform thickness 7 Theyre suitable open-frame sheeted-frame skinned-foam structures 8 The hinges durable Theyre inher ently tough addition will ex posed elements properly stalled 9 Because stretch during deflection permits spacing surfaces covering painting may completed after installa tion Appearance compares favorably hinging done after covering painting per conventional practice 10 They flexible known type one-piece hinge As source surgical rubber have using strapping urinary leg bag medical supply item package two selling about $450 makes 48 hinges approximately 1 1A long % wide rubber bit over / thick Note however different grades rubber used strapping sure get dark amber colored mate rial used high-quality hi-starts lighter colored stuff quickiy deteriorates 34 Model Aviation have approached prominent US RC man ufacturer about packaging material form best suited use luck Harleys Hinges may available hobby outlets close time article sees print installation concept hinges simple attached first side hinge line other side under litfie tension suffi cient relaxation some rubber free stretch during deflection Paste wax used avoid unwanted bonding accompa nying photos show techniques used little practice can quickly come expert Photo 1 shows strap various common items used install hinges left waxed stick A-in ply strip /64 ply block sandpaper strip smoothed piece 030 aluminum dowel handle essential Zap cy anoacrylate CyA have tiny spout controlled application hinges must cut clean nonragged edges sharp scissors seems best Photo 2 Practice making centered slots A-in scrap balsa Metal fingernail files make good tools slots should just big enough allow hinges slipped fingers fall out Use syringe apply water swell wood necessary Apply bit Zap side let wick hinges must floppy excess must removed debonder Photo 3 properly Zapped hinge serted will withstand extreme stretch tension used anchoring other surface negligible compared Slots centered balsa would typically used fin/rudder stab/elevator hing ing Rather balsa being uncovered shown practice fin stab would finished slots would made right through covering covering MonoKote type tool dowel handle shown first photos would heated against iron poked July 1988 35 slot neatly heat seal edges other hand fin solid glassed slots would worked deep marked insertion hinges would Zapped place us ual manner rudder elevator open frame MonoKote would applied side front Slots would cut sealed hinges slipped through bent 90 ed rear face Since deflection produces little addi tional tension thinner surfaces small amount rubber would have free stretch Photos 4 5 6 solid balsa fin has glassed painted MonoKoted rudder balsa frame skinned Y32 balsa Note fine closed fit Slots deep anchoring hinges made fin after finished flap white MonoKote hides attached fin part single piece has tached closed side rudder front slots cut rudder edges heat sealed hinges passed through Next using waxed stick hold end down hinges stretched rearward bonded skin other skin flap MonoKote attached Photo 7 sandpaper strip thicker rubber just hair used make notches beveled tapered strips along aileron flap hinge line sheeting skins fit over mem bers notches cut simultaneously both strips before attached Sheeting fonus other side slots hinges bonded first side passed over other strip bonded again distance beyond leaving some rubber free stretch rather being positioned between sheeting beveled strips full thick ness wing method must used make slots uniform height done supporting slotting tool shim A-in ply 3A6-in ply etc way slots both sides will align ment other Photo 8 foam-core wing panel viewed its underside items have glassed filled ready paint including bottom aileron skin shown Prenotched 1A-in beveled tapered strips positioned between skins Hinges ailerons best fitted just under top skin Up deflection imparts negligible additional tension Down being slight due differential also has little ef fect Hinges have Zapped-in 14 deep up front Note core pieces have removed behind slots strip done before attached top skin Swingee Ace RC pro trudes slip receptacle aileron Photo 9 Wax applied top bot tom hinge Extend waxing out about 14 reduce abrasion avoid unintentional bonding rubber Continued page 128 36 Model Aviation WANNA RACE LtflDTUAQT AnA BEGINNER RACES r 0-500 -i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 611 528-4043 203 613-2000 beef up structure would add excess weight degrade performance Setup flying youve kept weight down FW-190 will fly very well no bad habits Takeoffs quite straight absolutely no ground looping bit corrective right rudder needed sus pect wide-spaced mains largely re sponsible its good manners ground model will rise-off-ground ROG reaches flying speed eleva tor input Once clears ground little elevator healthy 40 will give good climbout Landings easy man age also Drop gear practice ap proaches gradually slowing accepta ble landing speed Use rudder keep straight slows approach Youll find airplane will slow down nicely out threatening stall first flights followed conven tional practice pairing 10 x 6 prop 40 engine experimentation quickly taught other prop sizes work better model 12 x 4 Zinger seems give best pull 11 x 6 seems bet ter speed moral Experiment different prop diameters pitches aircraft its clean lines easygoing flying disposition FW-190 makes good choice workbench next building season too demanding build very satisfying flying field Radio Technique/Myers Continued page 33 Im ask 2-6 mixer puts flaps opposite elevator like Ukie Stunt model flaps elevator cant imagine youd want flaps going same way elevator unless take care some installation peculiarity reversing switches channels seems redundant 6-2 mixer puts neutral offset el evator channel whether flaps low ered Again strange use elevator trim flaps like trim proportional flap setting Mr Lanterman told mix ers will different soon servo construction looks pretty durable featuring 0-ring-sealed case brass-on-steel bearings critical locations splined shafts output wheels convenient size should adequate planes engines up 60 size though might too big narrrow-fuselage Sailplane like Sagitta realize getting narrowband FM seven-channel system mixing/reversing features four servos Ni-Cds neck strap charger about $165 retail think wont have much excuse hanging onto old set keep trying convert $10 Look way isnt cost radio thats important its cost repairs after crash Hinges/Michaelis Continued page 36 want free stretch Photo 10 tweezers used poke pull hinges through aileron slots Photo 11 / ply strip used ap ply wax just behind slot avoid un wanted bonding Photo 12 moment truth Zap ap plied skin loose hinge end wrapped up against waxed stick under slight tension poised quickly jam down until glue fires much tension case about / right Use sharp blade remove excess hinge material Ap ply bit Zap needed until least bonded Photo 13 aileron spread scraps along hinge line bot tom can accurately positioned glued Photo 14 Depending care mak ing good butt fit hinge line can ex tremely fine Photo 15 shows flap installation Because hinges low such ar rangement full down deflection imparts negligible tension Up flap adds little tension hinges installed sufficient allowance stretch ef fect nominal Photo 16 just include JM Glascraft P-s ls like Penetrator used tip ailerons rubber hinges 128 Model Aviation CENTURY SYSTEMS OZ QUALITY PRODUCTS FROM DOWN UNDER Features snga 04 backup nafety equipment fur RIC modem Helicopter Gyro Fixed Wing Gyro Battery Cyciar Battery Checker Lost Modet Atarm Battery Backer 4 Channai Failsafe 2 Channel Mixer Muiti Charger Field Home Charger Electronic Switch Electronic Speed Control Thermal Cut-Oft Charger Send 01 postage free catalog PO BOx 4085 Costa Mesa Ca 02826 Phone 714 082-2480 DEALERS INOUIRIES WELCOME ZMA Name Street Address City StateZip HOWW BB INTERNATIONAL INC Swingees gets up about 75-80 mph high winds nary flutter aile rons both wing surfaces solid holes would have routed out partially side hinges could pulled through attached Use MonoKote its equivalent hide holes sure notches neat clean properly sized hinges can slipped hand fall out Note case flaps ailerons initial attachment hinges may done either side hinge line de cision fairly arbitrary though may determined observing what can best left open attach loose end photos show aileron bottom skin being laid after hinges Simi larly flap top skin might attached last fully top-sheeted frame structure leading edge bottom sheeting hinges could first anchored mov ing surface bottom covering still unsealed hinge loose ends would se cured underside top sheeting Aileron hinges could go directly onto sheet us ing flap hinges low could put ends little blocks glued sheeting keep better alignment slots foam wing fully sheeted top partially bottom pieces may cut out advance hinges attach rubber left free stretch easier will flap reflex upward aileron go downward Generally %-in hinge width practi cal sandpaper notching tool should 6 wider hinges dont rub against slot edges large aircraft hinges could wider Surgical rubber hinges strong dur able installation described will par tially shield elements Still its probably good idea keep ship shade possible protect rubber ultraviolet light attaching hinges painted sur faces sure solvents select cleaning up Zap ones wont harm paint Golden West Super Sol vent supplied Satellite City seems harm less test first painted scrap Swingees natural use rub ber hinges ailerons need modifica tion job best Dont judge early discontinued model Find newer opposing-set model black white Del rin Treat WD-40 loosen up get enough deflection pushrod must attach close Remove threads arm flatten exposed part %-in width between pieces flat hard steel %-in-sq-ID brass tubing make gauge 055 No 54 bit cen tered Use guide drill bit through Swingee arm matches stock K&S 055 wire makes good size pushrod end Just bend wire right angle slip hole Swingee arm wing skin will act retainer bent end inserted pointed away thin wing angled pin ends should filed down raised letters filed off vertical stops moving part interfere seating aileron hence should rounded front Swingee can lie tray made ply bottom blocks against either Swingee ends After gluing tray skin other structural member adhere Swingee tray Zap rear part slips receptacle built aileron glued As aileron deflects Swingee works out slight amount good receptacle formed 11/2 x 1 14-in pieces sheet aluminum bent slop bind thin N 1/2 wide Plug ends glue between sheeting shimmed arm points nearly straight forward aileron neutral Being entirely inter nal arrangement eliminates accre tion hardware causes slop hope ideas prove valuable have observations would interest address 26 5 Roosevelt Walla Walla WA 99362 Editor As go press just formed Ace RC researching sources properly formulated rubber pack aged sold Harleys Hinges SAFE FLYING IS NO ACCIDENT July 1988 129
Edition: Model Aviation - 1988/07
Page Numbers: 34, 35, 36, 128, 129
OVER THE PAST FEW years experi ments use flat surgical rubber hinging ailerons flaps elevator rudder model Sailplanes have proven highly successful aircraft dozen number have ranged competi tion thermal ships racing birds flown 50 mph winds Working out proper steps installing hinges has involved considerable trial error years field experience now behind Im convinced superior-quality rub ber makes practical fineworking hinge offering wide range RC application Among materials advantages following 1 Surfaces can butt fit face face flush other no need bevel round off provide space deflection hinges stretch allow pivoting sur face edges 2 The hinge line sealed simple butt fit 3 The hinges can installed under ten sion keeps surfaces contact sists return neutral position helps eliminate flutter caused slop 4 The method installation ensures hinges under tension some rubber free stretch during deflec tion avoids excessive current drain 5 The hinges can installed surfaces Amazing RUbber Hinges U Harley Michaelis Innovation name game building better simpler aircraft hinges made surgical rubber automatically create sealed hinge line will benefit model about A-in thickness upwards adaptable structure size 6 They work equally well beveled tapered surfaces structures uniform thickness 7 Theyre suitable open-frame sheeted-frame skinned-foam structures 8 The hinges durable Theyre inher ently tough addition will ex posed elements properly stalled 9 Because stretch during deflection permits spacing surfaces covering painting may completed after installa tion Appearance compares favorably hinging done after covering painting per conventional practice 10 They flexible known type one-piece hinge As source surgical rubber have using strapping urinary leg bag medical supply item package two selling about $450 makes 48 hinges approximately 1 1A long % wide rubber bit over / thick Note however different grades rubber used strapping sure get dark amber colored mate rial used high-quality hi-starts lighter colored stuff quickiy deteriorates 34 Model Aviation have approached prominent US RC man ufacturer about packaging material form best suited use luck Harleys Hinges may available hobby outlets close time article sees print installation concept hinges simple attached first side hinge line other side under litfie tension suffi cient relaxation some rubber free stretch during deflection Paste wax used avoid unwanted bonding accompa nying photos show techniques used little practice can quickly come expert Photo 1 shows strap various common items used install hinges left waxed stick A-in ply strip /64 ply block sandpaper strip smoothed piece 030 aluminum dowel handle essential Zap cy anoacrylate CyA have tiny spout controlled application hinges must cut clean nonragged edges sharp scissors seems best Photo 2 Practice making centered slots A-in scrap balsa Metal fingernail files make good tools slots should just big enough allow hinges slipped fingers fall out Use syringe apply water swell wood necessary Apply bit Zap side let wick hinges must floppy excess must removed debonder Photo 3 properly Zapped hinge serted will withstand extreme stretch tension used anchoring other surface negligible compared Slots centered balsa would typically used fin/rudder stab/elevator hing ing Rather balsa being uncovered shown practice fin stab would finished slots would made right through covering covering MonoKote type tool dowel handle shown first photos would heated against iron poked July 1988 35 slot neatly heat seal edges other hand fin solid glassed slots would worked deep marked insertion hinges would Zapped place us ual manner rudder elevator open frame MonoKote would applied side front Slots would cut sealed hinges slipped through bent 90 ed rear face Since deflection produces little addi tional tension thinner surfaces small amount rubber would have free stretch Photos 4 5 6 solid balsa fin has glassed painted MonoKoted rudder balsa frame skinned Y32 balsa Note fine closed fit Slots deep anchoring hinges made fin after finished flap white MonoKote hides attached fin part single piece has tached closed side rudder front slots cut rudder edges heat sealed hinges passed through Next using waxed stick hold end down hinges stretched rearward bonded skin other skin flap MonoKote attached Photo 7 sandpaper strip thicker rubber just hair used make notches beveled tapered strips along aileron flap hinge line sheeting skins fit over mem bers notches cut simultaneously both strips before attached Sheeting fonus other side slots hinges bonded first side passed over other strip bonded again distance beyond leaving some rubber free stretch rather being positioned between sheeting beveled strips full thick ness wing method must used make slots uniform height done supporting slotting tool shim A-in ply 3A6-in ply etc way slots both sides will align ment other Photo 8 foam-core wing panel viewed its underside items have glassed filled ready paint including bottom aileron skin shown Prenotched 1A-in beveled tapered strips positioned between skins Hinges ailerons best fitted just under top skin Up deflection imparts negligible additional tension Down being slight due differential also has little ef fect Hinges have Zapped-in 14 deep up front Note core pieces have removed behind slots strip done before attached top skin Swingee Ace RC pro trudes slip receptacle aileron Photo 9 Wax applied top bot tom hinge Extend waxing out about 14 reduce abrasion avoid unintentional bonding rubber Continued page 128 36 Model Aviation WANNA RACE LtflDTUAQT AnA BEGINNER RACES r 0-500 -i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 611 528-4043 203 613-2000 beef up structure would add excess weight degrade performance Setup flying youve kept weight down FW-190 will fly very well no bad habits Takeoffs quite straight absolutely no ground looping bit corrective right rudder needed sus pect wide-spaced mains largely re sponsible its good manners ground model will rise-off-ground ROG reaches flying speed eleva tor input Once clears ground little elevator healthy 40 will give good climbout Landings easy man age also Drop gear practice ap proaches gradually slowing accepta ble landing speed Use rudder keep straight slows approach Youll find airplane will slow down nicely out threatening stall first flights followed conven tional practice pairing 10 x 6 prop 40 engine experimentation quickly taught other prop sizes work better model 12 x 4 Zinger seems give best pull 11 x 6 seems bet ter speed moral Experiment different prop diameters pitches aircraft its clean lines easygoing flying disposition FW-190 makes good choice workbench next building season too demanding build very satisfying flying field Radio Technique/Myers Continued page 33 Im ask 2-6 mixer puts flaps opposite elevator like Ukie Stunt model flaps elevator cant imagine youd want flaps going same way elevator unless take care some installation peculiarity reversing switches channels seems redundant 6-2 mixer puts neutral offset el evator channel whether flaps low ered Again strange use elevator trim flaps like trim proportional flap setting Mr Lanterman told mix ers will different soon servo construction looks pretty durable featuring 0-ring-sealed case brass-on-steel bearings critical locations splined shafts output wheels convenient size should adequate planes engines up 60 size though might too big narrrow-fuselage Sailplane like Sagitta realize getting narrowband FM seven-channel system mixing/reversing features four servos Ni-Cds neck strap charger about $165 retail think wont have much excuse hanging onto old set keep trying convert $10 Look way isnt cost radio thats important its cost repairs after crash Hinges/Michaelis Continued page 36 want free stretch Photo 10 tweezers used poke pull hinges through aileron slots Photo 11 / ply strip used ap ply wax just behind slot avoid un wanted bonding Photo 12 moment truth Zap ap plied skin loose hinge end wrapped up against waxed stick under slight tension poised quickly jam down until glue fires much tension case about / right Use sharp blade remove excess hinge material Ap ply bit Zap needed until least bonded Photo 13 aileron spread scraps along hinge line bot tom can accurately positioned glued Photo 14 Depending care mak ing good butt fit hinge line can ex tremely fine Photo 15 shows flap installation Because hinges low such ar rangement full down deflection imparts negligible tension Up flap adds little tension hinges installed sufficient allowance stretch ef fect nominal Photo 16 just include JM Glascraft P-s ls like Penetrator used tip ailerons rubber hinges 128 Model Aviation CENTURY SYSTEMS OZ QUALITY PRODUCTS FROM DOWN UNDER Features snga 04 backup nafety equipment fur RIC modem Helicopter Gyro Fixed Wing Gyro Battery Cyciar Battery Checker Lost Modet Atarm Battery Backer 4 Channai Failsafe 2 Channel Mixer Muiti Charger Field Home Charger Electronic Switch Electronic Speed Control Thermal Cut-Oft Charger Send 01 postage free catalog PO BOx 4085 Costa Mesa Ca 02826 Phone 714 082-2480 DEALERS INOUIRIES WELCOME ZMA Name Street Address City StateZip HOWW BB INTERNATIONAL INC Swingees gets up about 75-80 mph high winds nary flutter aile rons both wing surfaces solid holes would have routed out partially side hinges could pulled through attached Use MonoKote its equivalent hide holes sure notches neat clean properly sized hinges can slipped hand fall out Note case flaps ailerons initial attachment hinges may done either side hinge line de cision fairly arbitrary though may determined observing what can best left open attach loose end photos show aileron bottom skin being laid after hinges Simi larly flap top skin might attached last fully top-sheeted frame structure leading edge bottom sheeting hinges could first anchored mov ing surface bottom covering still unsealed hinge loose ends would se cured underside top sheeting Aileron hinges could go directly onto sheet us ing flap hinges low could put ends little blocks glued sheeting keep better alignment slots foam wing fully sheeted top partially bottom pieces may cut out advance hinges attach rubber left free stretch easier will flap reflex upward aileron go downward Generally %-in hinge width practi cal sandpaper notching tool should 6 wider hinges dont rub against slot edges large aircraft hinges could wider Surgical rubber hinges strong dur able installation described will par tially shield elements Still its probably good idea keep ship shade possible protect rubber ultraviolet light attaching hinges painted sur faces sure solvents select cleaning up Zap ones wont harm paint Golden West Super Sol vent supplied Satellite City seems harm less test first painted scrap Swingees natural use rub ber hinges ailerons need modifica tion job best Dont judge early discontinued model Find newer opposing-set model black white Del rin Treat WD-40 loosen up get enough deflection pushrod must attach close Remove threads arm flatten exposed part %-in width between pieces flat hard steel %-in-sq-ID brass tubing make gauge 055 No 54 bit cen tered Use guide drill bit through Swingee arm matches stock K&S 055 wire makes good size pushrod end Just bend wire right angle slip hole Swingee arm wing skin will act retainer bent end inserted pointed away thin wing angled pin ends should filed down raised letters filed off vertical stops moving part interfere seating aileron hence should rounded front Swingee can lie tray made ply bottom blocks against either Swingee ends After gluing tray skin other structural member adhere Swingee tray Zap rear part slips receptacle built aileron glued As aileron deflects Swingee works out slight amount good receptacle formed 11/2 x 1 14-in pieces sheet aluminum bent slop bind thin N 1/2 wide Plug ends glue between sheeting shimmed arm points nearly straight forward aileron neutral Being entirely inter nal arrangement eliminates accre tion hardware causes slop hope ideas prove valuable have observations would interest address 26 5 Roosevelt Walla Walla WA 99362 Editor As go press just formed Ace RC researching sources properly formulated rubber pack aged sold Harleys Hinges SAFE FLYING IS NO ACCIDENT July 1988 129
Edition: Model Aviation - 1988/07
Page Numbers: 34, 35, 36, 128, 129
OVER THE PAST FEW years experi ments use flat surgical rubber hinging ailerons flaps elevator rudder model Sailplanes have proven highly successful aircraft dozen number have ranged competi tion thermal ships racing birds flown 50 mph winds Working out proper steps installing hinges has involved considerable trial error years field experience now behind Im convinced superior-quality rub ber makes practical fineworking hinge offering wide range RC application Among materials advantages following 1 Surfaces can butt fit face face flush other no need bevel round off provide space deflection hinges stretch allow pivoting sur face edges 2 The hinge line sealed simple butt fit 3 The hinges can installed under ten sion keeps surfaces contact sists return neutral position helps eliminate flutter caused slop 4 The method installation ensures hinges under tension some rubber free stretch during deflec tion avoids excessive current drain 5 The hinges can installed surfaces Amazing RUbber Hinges U Harley Michaelis Innovation name game building better simpler aircraft hinges made surgical rubber automatically create sealed hinge line will benefit model about A-in thickness upwards adaptable structure size 6 They work equally well beveled tapered surfaces structures uniform thickness 7 Theyre suitable open-frame sheeted-frame skinned-foam structures 8 The hinges durable Theyre inher ently tough addition will ex posed elements properly stalled 9 Because stretch during deflection permits spacing surfaces covering painting may completed after installa tion Appearance compares favorably hinging done after covering painting per conventional practice 10 They flexible known type one-piece hinge As source surgical rubber have using strapping urinary leg bag medical supply item package two selling about $450 makes 48 hinges approximately 1 1A long % wide rubber bit over / thick Note however different grades rubber used strapping sure get dark amber colored mate rial used high-quality hi-starts lighter colored stuff quickiy deteriorates 34 Model Aviation have approached prominent US RC man ufacturer about packaging material form best suited use luck Harleys Hinges may available hobby outlets close time article sees print installation concept hinges simple attached first side hinge line other side under litfie tension suffi cient relaxation some rubber free stretch during deflection Paste wax used avoid unwanted bonding accompa nying photos show techniques used little practice can quickly come expert Photo 1 shows strap various common items used install hinges left waxed stick A-in ply strip /64 ply block sandpaper strip smoothed piece 030 aluminum dowel handle essential Zap cy anoacrylate CyA have tiny spout controlled application hinges must cut clean nonragged edges sharp scissors seems best Photo 2 Practice making centered slots A-in scrap balsa Metal fingernail files make good tools slots should just big enough allow hinges slipped fingers fall out Use syringe apply water swell wood necessary Apply bit Zap side let wick hinges must floppy excess must removed debonder Photo 3 properly Zapped hinge serted will withstand extreme stretch tension used anchoring other surface negligible compared Slots centered balsa would typically used fin/rudder stab/elevator hing ing Rather balsa being uncovered shown practice fin stab would finished slots would made right through covering covering MonoKote type tool dowel handle shown first photos would heated against iron poked July 1988 35 slot neatly heat seal edges other hand fin solid glassed slots would worked deep marked insertion hinges would Zapped place us ual manner rudder elevator open frame MonoKote would applied side front Slots would cut sealed hinges slipped through bent 90 ed rear face Since deflection produces little addi tional tension thinner surfaces small amount rubber would have free stretch Photos 4 5 6 solid balsa fin has glassed painted MonoKoted rudder balsa frame skinned Y32 balsa Note fine closed fit Slots deep anchoring hinges made fin after finished flap white MonoKote hides attached fin part single piece has tached closed side rudder front slots cut rudder edges heat sealed hinges passed through Next using waxed stick hold end down hinges stretched rearward bonded skin other skin flap MonoKote attached Photo 7 sandpaper strip thicker rubber just hair used make notches beveled tapered strips along aileron flap hinge line sheeting skins fit over mem bers notches cut simultaneously both strips before attached Sheeting fonus other side slots hinges bonded first side passed over other strip bonded again distance beyond leaving some rubber free stretch rather being positioned between sheeting beveled strips full thick ness wing method must used make slots uniform height done supporting slotting tool shim A-in ply 3A6-in ply etc way slots both sides will align ment other Photo 8 foam-core wing panel viewed its underside items have glassed filled ready paint including bottom aileron skin shown Prenotched 1A-in beveled tapered strips positioned between skins Hinges ailerons best fitted just under top skin Up deflection imparts negligible additional tension Down being slight due differential also has little ef fect Hinges have Zapped-in 14 deep up front Note core pieces have removed behind slots strip done before attached top skin Swingee Ace RC pro trudes slip receptacle aileron Photo 9 Wax applied top bot tom hinge Extend waxing out about 14 reduce abrasion avoid unintentional bonding rubber Continued page 128 36 Model Aviation WANNA RACE LtflDTUAQT AnA BEGINNER RACES r 0-500 -i * FAI Instructions Club Programs Information Contact NORTH EAST PYLON RACING ORGANIZATION 119 DEAN AVEFRANKLIN MASS 02038 Tel 611 528-4043 203 613-2000 beef up structure would add excess weight degrade performance Setup flying youve kept weight down FW-190 will fly very well no bad habits Takeoffs quite straight absolutely no ground looping bit corrective right rudder needed sus pect wide-spaced mains largely re sponsible its good manners ground model will rise-off-ground ROG reaches flying speed eleva tor input Once clears ground little elevator healthy 40 will give good climbout Landings easy man age also Drop gear practice ap proaches gradually slowing accepta ble landing speed Use rudder keep straight slows approach Youll find airplane will slow down nicely out threatening stall first flights followed conven tional practice pairing 10 x 6 prop 40 engine experimentation quickly taught other prop sizes work better model 12 x 4 Zinger seems give best pull 11 x 6 seems bet ter speed moral Experiment different prop diameters pitches aircraft its clean lines easygoing flying disposition FW-190 makes good choice workbench next building season too demanding build very satisfying flying field Radio Technique/Myers Continued page 33 Im ask 2-6 mixer puts flaps opposite elevator like Ukie Stunt model flaps elevator cant imagine youd want flaps going same way elevator unless take care some installation peculiarity reversing switches channels seems redundant 6-2 mixer puts neutral offset el evator channel whether flaps low ered Again strange use elevator trim flaps like trim proportional flap setting Mr Lanterman told mix ers will different soon servo construction looks pretty durable featuring 0-ring-sealed case brass-on-steel bearings critical locations splined shafts output wheels convenient size should adequate planes engines up 60 size though might too big narrrow-fuselage Sailplane like Sagitta realize getting narrowband FM seven-channel system mixing/reversing features four servos Ni-Cds neck strap charger about $165 retail think wont have much excuse hanging onto old set keep trying convert $10 Look way isnt cost radio thats important its cost repairs after crash Hinges/Michaelis Continued page 36 want free stretch Photo 10 tweezers used poke pull hinges through aileron slots Photo 11 / ply strip used ap ply wax just behind slot avoid un wanted bonding Photo 12 moment truth Zap ap plied skin loose hinge end wrapped up against waxed stick under slight tension poised quickly jam down until glue fires much tension case about / right Use sharp blade remove excess hinge material Ap ply bit Zap needed until least bonded Photo 13 aileron spread scraps along hinge line bot tom can accurately positioned glued Photo 14 Depending care mak ing good butt fit hinge line can ex tremely fine Photo 15 shows flap installation Because hinges low such ar rangement full down deflection imparts negligible tension Up flap adds little tension hinges installed sufficient allowance stretch ef fect nominal Photo 16 just include JM Glascraft P-s ls like Penetrator used tip ailerons rubber hinges 128 Model Aviation CENTURY SYSTEMS OZ QUALITY PRODUCTS FROM DOWN UNDER Features snga 04 backup nafety equipment fur RIC modem Helicopter Gyro Fixed Wing Gyro Battery Cyciar Battery Checker Lost Modet Atarm Battery Backer 4 Channai Failsafe 2 Channel Mixer Muiti Charger Field Home Charger Electronic Switch Electronic Speed Control Thermal Cut-Oft Charger Send 01 postage free catalog PO BOx 4085 Costa Mesa Ca 02826 Phone 714 082-2480 DEALERS INOUIRIES WELCOME ZMA Name Street Address City StateZip HOWW BB INTERNATIONAL INC Swingees gets up about 75-80 mph high winds nary flutter aile rons both wing surfaces solid holes would have routed out partially side hinges could pulled through attached Use MonoKote its equivalent hide holes sure notches neat clean properly sized hinges can slipped hand fall out Note case flaps ailerons initial attachment hinges may done either side hinge line de cision fairly arbitrary though may determined observing what can best left open attach loose end photos show aileron bottom skin being laid after hinges Simi larly flap top skin might attached last fully top-sheeted frame structure leading edge bottom sheeting hinges could first anchored mov ing surface bottom covering still unsealed hinge loose ends would se cured underside top sheeting Aileron hinges could go directly onto sheet us ing flap hinges low could put ends little blocks glued sheeting keep better alignment slots foam wing fully sheeted top partially bottom pieces may cut out advance hinges attach rubber left free stretch easier will flap reflex upward aileron go downward Generally %-in hinge width practi cal sandpaper notching tool should 6 wider hinges dont rub against slot edges large aircraft hinges could wider Surgical rubber hinges strong dur able installation described will par tially shield elements Still its probably good idea keep ship shade possible protect rubber ultraviolet light attaching hinges painted sur faces sure solvents select cleaning up Zap ones wont harm paint Golden West Super Sol vent supplied Satellite City seems harm less test first painted scrap Swingees natural use rub ber hinges ailerons need modifica tion job best Dont judge early discontinued model Find newer opposing-set model black white Del rin Treat WD-40 loosen up get enough deflection pushrod must attach close Remove threads arm flatten exposed part %-in width between pieces flat hard steel %-in-sq-ID brass tubing make gauge 055 No 54 bit cen tered Use guide drill bit through Swingee arm matches stock K&S 055 wire makes good size pushrod end Just bend wire right angle slip hole Swingee arm wing skin will act retainer bent end inserted pointed away thin wing angled pin ends should filed down raised letters filed off vertical stops moving part interfere seating aileron hence should rounded front Swingee can lie tray made ply bottom blocks against either Swingee ends After gluing tray skin other structural member adhere Swingee tray Zap rear part slips receptacle built aileron glued As aileron deflects Swingee works out slight amount good receptacle formed 11/2 x 1 14-in pieces sheet aluminum bent slop bind thin N 1/2 wide Plug ends glue between sheeting shimmed arm points nearly straight forward aileron neutral Being entirely inter nal arrangement eliminates accre tion hardware causes slop hope ideas prove valuable have observations would interest address 26 5 Roosevelt Walla Walla WA 99362 Editor As go press just formed Ace RC researching sources properly formulated rubber pack aged sold Harleys Hinges SAFE FLYING IS NO ACCIDENT July 1988 129