I OLE RELIABLE handle put aircraft son Max Its derivation stems fact son describes abilities setting needle valves speed jobs anything reliable However performance machine has defied chastisement start airplane has done reasonably well addition its first-place win last years Nats won first appearance originality design 1976 Anaheim Trade Show also first Oregon Northwest Regionals set na tional record can 165 mphone days might get lucky officially have building models since 1939 participating National events two Plymouth Internats family also flies UC scale stunt combat RC gliders competitive free flights B/C cate gories estimation no modeler puts effort 35 40 seconds flight U-control speed fliers Speed difficult exacting science simple master ways com binations fly Formula 40 event have attempted speed excellent starting point first move select K&B 65 engine Go local hobby shop pick out piston sticks tightest Run engine initially 65% Nitrotane fuel 11 X 4 Top Flite maple prop cut down size will turn fast 4-cycle will tach around 22500 rpm will take about 30 minutes break engine Dont let lean out run secured test stand Shut off fuel low tank put ting finger over intake en gine described will give 155 mph plus first flight airplane engine broken clean out residual fuel lubricate Marvel Mystery Oil preservation Keep engine clean building Put tissue exhaust masking tape around housing front bearing tissue intake Construction Fit engine Midwest formerly Harters proto speed pan pan must have portion cut off front tail shown plan file front conform plan engine mounted using 4 X 40 X s making sure pan flat engine perfectly centered doing pan work also cut nostrils air intake Drill pilot hole keep raising size bit time drill press down drill obtain angle shown plan Drill tap 6 X 32s holddowns cut curve needle valve Clean pan metal fragments next step make crutch method use basswood X 24 Cut heads off two 6 X 32 bolts sharpen Screw bolts pan hold-down holes sharpened tops protrude Center basswood block pan approximate posi tion depress pan tightly against basswood block two sharpened 6 X 32s will indent block thereby accu rately marking hold-down bolt posi tions Remove sharpened screws drill crutch accordingly bolt pan 30 Model Aviation am nas goou rueson 10 UU nappy sign can 165 mphone uays hopes hit speed officially covers en tire airplaneexcept metal wingwith 3/4-oz K&B glass cloth Now scribe basswood around pan will fit accurately Take pan off crutch transfer remaining out line crutch top view plans Carefully cut out crutch inside outside cut out trace crutch another piece basswood same size Cut out outside point now have two 3/s-in basswood crutches fit pan Put crutches aside Using piece very straight maple wide 3/t thick cut out wing spar shown plan spar flat top tapered bottom 3/16 tips Now comes tricky part Center spar perfectly over crutch hold-down holes Drill holes through spar Using two long 6 X 32 bolts place spar between two crutches bolt together Scribe bottom crutch along spar front back Unbolt crutch cut bot tom crutch along scribe lines recap have true crutch com plete length spar complete two pieces bottom crutchthe front piece goes front spar aft piece goes back spar tail Noting plan balsa begins ends cut back bottom crutch accordingly still cant glue anything together yet because 6 X 32 blind-nut maple spar bellcrank 4 X 40 nut plate stainless steel landing gear must installed After cutting land ing gear flat two bolt holes mounting drill 4 X 40 hole axle Grip top gear vise 4 end bend 90-degree angle Bolt gear front bottom crutch offset enough centerline clear mini-pipe inside cir cle During takeoff insures outboard wing tilted down also tail Vd cant drag wing-down position takeoff landing preceding steps make assembly easy job Bolt wing spar top portion crutch using bellcrank bolt pan hold-down bolts Glue Titebond put vaseline bolts periodically turn insure bound Glue position front bottom crutch gear Using clamps glue aft bottom crutch pieces position Using basswood 3/16 thick cut slot landing gear glue cap over bottom crutch wing spar aft crutch adjacent wing spar Countersink engine mounts K&B 65 take 4 X 40 countersunk machine screw Mount engine pan countersunk screws Carefully cut crutch allow engine slide position Bolt assembly pan engine installed Put spin ner propeller Install minipipe engine Put 1/64 balsa spacer side engine Place two pieces 1/16 X 1 X 7 basswood side spacer beside engine cowl Glue front along edges usually hold cowl sides place rubberband Remove 1/64-in spacers soon glue dry cowl sides important cowl fit nicely does touch engine Using 3/16in basswood cut hole perfectly fits head engine Remove minipipe glue cowl cap position meticulous attention prevent glue getting engine waiting cowl cap dry cut out stabi lizer sand shape Cut stabilizer precisely two center two blocks wood perfectly matchedthat wider width stabilizerprop up stabilizer tips match dihedral measurement plan Glue Titebond point wehaveadecision make airplanes fly clockwise right K&B 65 very important because venturi position permanently fixed unless have facilities make own rotor bladder tank used venturi position critical However using metal tank crankcase pressure venturi position very critical Secondly fly right because torque engine assists excellent takeoff characteristics single wheel above mind decide fly left counter-clockwise rec September1977 31 cowl should fit Closely touch engine has single small cooling slot side inside circlenote blunt end just aft minipipe Author states de scribed breakin followed model can turn 155 plus its first flight ommend bladder bladder will give faster speed tank will provide much higher percentage consistently fast runs continue construction Re move pan engine aircraft Trim off excess cowl cap sand fit Cut small opening front cooling 15 wide X 87 high cut should point two side cowls join moving aft side cowl will inside circle Bend two tail-skid wires shown plan Drill holes receive wires notch wood accordingly Epoxy wires place wrap copper wire solder Stay-Brite Reinstall engine pan place stabilizer position Notch crutch receive stabilizer Tite-bond bot tom stabilizer crutch craft now beginning take shape Place blocks double check alignment wing spar dihedral tail alignment tail respect thrust line square proceed final stages square dis assemble re-glue until square straight elevator located outboard side circle assists keeping outboard wing down takeoff landing Following outline plan carefully cut out elevator Bend 1/16 music wire form control horn install shown have two models horn up horn down Install horn apply up control pulls pushrod prevents flexing flying because down control applied infrequently hinges elevator parachute nylon thread sewn figure-eight pat tern thread very strong will absorb vibration exceptionally well Make Z-bend 1/16-in pushrod slip place control horn Cut pushrod about halfway bellcrank belicrank 50 stainless Mon oline buttons welded bellcrank polished remove burrs Install bellcrank buttons down Make Z-bend other end 1/16-in pushrod cut leaving -in gap elevator bellcrank neutral Place end pushrod 6-in long tight fitting brass tube Crimp solder end Stay-Brite will stiffen pushrod still permit some minor adjustment required Remove control system elevator Install bottom balsa block Sand bottom shape hollow out per plan Fiberglass inside using &B cloth Put bulkhead guide pushrod Tac glue top balsa block position carve Remove block hollow out per plan Resin inside glue permanently place Cut slot receive elevator slide pushrod place fish around see can hook elevator Z-bend Once youve mastered skill confident youll have trouble hooking up remove pushrod elevator finishing wing 012 aluminum obtained Sig process simple pre pared make spare Draw outline half wing though unfolded trail ing edge centerline layout leading edge Cut out pattern Place pattern metal brake small est radius available bend 45-de gree along centerline lead ing edge wing Set wing bottom wax paper trailing edge lined up edge flat straight table Use heavy stiff X 20 maple oak board Pull top wing down match trailing edge point wing will too thick Keep applying weight flexing aluminum till have desired con tour Once have contour epoxy trailing edge together Sand inside trailing edge carefully rough sandpaper bond will good Sand edges spar receive airfoil shape wing Slide wing half spar Hold light see spar wrinkling wing adjust required Epoxy wings spar placing some wood keys root help Continued page 83 32 Model Aviation bellcrank made 50 stainless steel Monoline buttons welded place pol ished remove burrs installed aircraft buttons facing down ne engine nueg Midwest formerly Harters proto speed pan portions front rear have cut away shown drawings nose filed conform plan two openings nostrils cut Out serve air intake Tank made K&H fuel can stock because nas iess tenoency ioam iuei man uglier sneet brass Pan cleaned 600 paper tank coated Silicon pressed place purpose again greatly reduce effects engine vibration fuel course reduces line drag speed goes up educational phase article con cerns engines Juniors inex perienced Seniors suggestion follow simple rules 1 Do disassemble engine will harm good 2 Do polish parts because does alter performance 3 Do loosen press-fit bearings 4 Do open venturi bigger hole because wont able get needle setting 5 Do use 65% nitro cause expensive 6 Do lap crankcase because youll make crooked will leak 7 Do polish rod because does lubricate well 8 Do grind portions off crank shaft counter-balance because will add vibration 9 Do deburr engine im proper tool bright light magnifying glass you will con vert miniscule burr bad groove insist working engine increase its power some things can done crowbar file axe Rework requires precise tools knowledge use best bet locate experienced speed flier machinist perhaps 20 true experts USA self-appointed experts necessarily proven ability Beware because love gain experience working engines follow ing true story relates self-appointed experts out flying young man arrived new 5T29 G-21 series tight youngster wanted advice expert proceeded mix toothpaste cutting oil fuel break very short time engine really loosened up fact could hold engine breeze would turn like pinwheel Needless say engine worn out So beware expert right guidance im portant item piston/sleeve fit can accomplished skillful use hone meticulous break-in procedure second important item head clear ance can accomplished shims George Aldrich Last least lower end must turn freely dont have help get some dont try own new KB 65s Tigre 40xs dont need thing youre choosy selection Sam Snyder 1041 East Pico Fresno CA 93704 r race j ou need obbypoxy HOBBYPOXY fuel proof high-nitro fuels HOBBYPOXY tough itll withstand abuse fast pit stops hard landings HOBBYPOXY super smooth adds miles-per-hour HOBBYPOXY easy use easy repair S dont forget Hobbypoxy glues strongest best construction Send free color card copy Hobbypoxy Painting Pointers booklet 36 Pine lOBBY POXY PROD UCTS Division PetthPamtCoInc Ole Reliable/Snyder continued page 32 secure Cut small balsa rib recess tip fill tips epoxy File shape Dont forget allow slots control lines respective locations plan position two 1/32-in dowels positions control lines put vaseline key points epoxy cant fill up block holes After epoxy dries slide out dowels aircraft now ready finish Glass cloth entire airplane except alu minum wing 3/4-Oz K&B wing joints place masking tape about fuselage 2-oz glass cloth build fillet top bottom feath ering aluminum remove tape strengthens joint smooths air flow After applying resin install ele vator hinges pushrod Spray K&B Super-Poxy primer Sand 400 grit apply K&B Super-Poxy color Polish aluminum wings should like thank following per sons over years have assisted Bill Wisniewski Jim Nightengale Cliff Telford Luke Roy John Newton George Aldrich Although everything September1977 83 writing advertisers mention read about MA Heres Balsarite TM Works. Iron-on coverings tend stick surface balsa often leaving trap ped air sagging coming unglued Balsarite sinks deep wood melts intermixes adhesive covering ironed No trapped air deep permanent adhesion Eliminates sag ging fuelcreep warping due mois ture makes hard-to-reach fillets easy cover use Monokote Solarfilm Coverite must use Balsarite takes gamble out covering iron-ons IRON-ON COVERING &L3j BALSA WOOD j ES IV E F USING WITH BALSARITE COVERITE 2779 Philmont Ave Huntingdcn Valley Pa machine original design through powerplant modification experience pertinent suggestions past have made current results possible CL Navy Carrier/Perry continued page 35 help participate year Ive asked Ted Kraver include rules questionnaire Hi Low Landing Carrier newsletter dont subscribe yet can get action sending five dollars Ted 1212 E Manhatton Dr Tempe AZ 85282 Send ques tionaires will see re sults get CLCR numerous proposals year three areas possible ma jor change subjects Profile Car rier engines bonus points scale-like models Profile Carrier event low-speed flight Profile Carrier engine proposal parallels similar proposals Slow Com bat Slow Rat Race purpose provide single set engine specifications three events help ensure ade quate supply engines available through normal retail outlets pro posals three major changes will probably voted separately would require engines produced least 1000 units Another would require crankcase crankshaft piston cylinder same manufacturer same engine design third change would delete plain-bearing require ment bonus point proposal would en courage use scale-like models Profile Carrier event bonus would small 10 points existing models will made obsolete yet should enough encourage building some scale-like models point award could changed next cycle after have some experience two types models competition scale re quirements quite liberal allow exist ing scale-like profile kits used permit simple installation of moveable surfaces commonly used Pro file Carrier models changes low-speed portion flights would two things would change penalty violations during low speed flight eliminate current conflicting rules say flight official after low-speed signal attempt violation dur ing low-speed flight Under proposed change low-speed violations would result loss low-speed score loss entire flight second change would delete current requirement model de viate radically flight characteris tics prototype substitute re quirement model exceed 600 nose-high attitude latter would provide uniformly enforceable definition Enforcement options include loss flight current penalty loss low-speed score intentional prolonged repeated deviations Another option five-point penalty time 600 limit exceeded would eliminate some judgment calls intentional uninten tional deviations failure correct imme diately would still mean loss flight low-speed score will require officials count deviations Summaries proposals results CLCB voting Competition Newsletter section past issues Richard L Perry S016 Angelita Ave Dayton 0H4S424 Ailerons/Bentson continued page 28 photographs Monterey illustrate simple modification can incorpo rated completed glider excessive work expense ailerons extend about two-thirds distance fuselage wing tips covering peeled back modifica tion made covering re-ironed back External aileron horns used avoid cutting fuselage open flew Monterey several times aileron installed good weather came before job finished aircraft rolled twice fast toward wing aileron Building scratch Id use slotted tubes engaged controls within fuselage im portant consideration model hits hard wings swing forward controls arent ripped out complete job coordinating controls producing realistic ap pearance flight reduce dihedral full-scale gliders may find will also have reduce verti cal tail area glider will tend drop its nose gain speed cir cling Spiral stability objective model will fly itself circling flight minimum attention Reducing fin rudder area may sound rash glider adequate aileron differential much dihedral requires compara tively little vertical tail surface Check relative rudder movement flying model toward away applying control roll first side other model should respond instantly roll too fast should product review product review product review Buzzbee Tachometer latest GloBee re lease small audio tachometer quickly accurately measures engine rpm match ing tones Simply listen engine turn control knob until its tone matches engines sound read rpm setting indi cated dial BuzzBee operates electronic tuning fork principle frequencies simulating engine speed sounds range 2600 35000 rpm Buzzbee effective measuring moving modelsairplanes heli copters boats carsas under re straint starting line unnecessary close whirling propellers en gine can heard rpm reading will de livered Buzzbee can duplicate engine speed settings superior trial runs tuning engine tachometer check compe titors engine rpm powered single NEDA 1604 Series 9-volt battery Inot includ ed Fusite Division 6000 Fernview Ave Cin cinnati OH 45212 product review product review product review 84 Model Aviation
Edition: Model Aviation - 1977/09
Page Numbers: 30, 31, 32, 83, 84
I OLE RELIABLE handle put aircraft son Max Its derivation stems fact son describes abilities setting needle valves speed jobs anything reliable However performance machine has defied chastisement start airplane has done reasonably well addition its first-place win last years Nats won first appearance originality design 1976 Anaheim Trade Show also first Oregon Northwest Regionals set na tional record can 165 mphone days might get lucky officially have building models since 1939 participating National events two Plymouth Internats family also flies UC scale stunt combat RC gliders competitive free flights B/C cate gories estimation no modeler puts effort 35 40 seconds flight U-control speed fliers Speed difficult exacting science simple master ways com binations fly Formula 40 event have attempted speed excellent starting point first move select K&B 65 engine Go local hobby shop pick out piston sticks tightest Run engine initially 65% Nitrotane fuel 11 X 4 Top Flite maple prop cut down size will turn fast 4-cycle will tach around 22500 rpm will take about 30 minutes break engine Dont let lean out run secured test stand Shut off fuel low tank put ting finger over intake en gine described will give 155 mph plus first flight airplane engine broken clean out residual fuel lubricate Marvel Mystery Oil preservation Keep engine clean building Put tissue exhaust masking tape around housing front bearing tissue intake Construction Fit engine Midwest formerly Harters proto speed pan pan must have portion cut off front tail shown plan file front conform plan engine mounted using 4 X 40 X s making sure pan flat engine perfectly centered doing pan work also cut nostrils air intake Drill pilot hole keep raising size bit time drill press down drill obtain angle shown plan Drill tap 6 X 32s holddowns cut curve needle valve Clean pan metal fragments next step make crutch method use basswood X 24 Cut heads off two 6 X 32 bolts sharpen Screw bolts pan hold-down holes sharpened tops protrude Center basswood block pan approximate posi tion depress pan tightly against basswood block two sharpened 6 X 32s will indent block thereby accu rately marking hold-down bolt posi tions Remove sharpened screws drill crutch accordingly bolt pan 30 Model Aviation am nas goou rueson 10 UU nappy sign can 165 mphone uays hopes hit speed officially covers en tire airplaneexcept metal wingwith 3/4-oz K&B glass cloth Now scribe basswood around pan will fit accurately Take pan off crutch transfer remaining out line crutch top view plans Carefully cut out crutch inside outside cut out trace crutch another piece basswood same size Cut out outside point now have two 3/s-in basswood crutches fit pan Put crutches aside Using piece very straight maple wide 3/t thick cut out wing spar shown plan spar flat top tapered bottom 3/16 tips Now comes tricky part Center spar perfectly over crutch hold-down holes Drill holes through spar Using two long 6 X 32 bolts place spar between two crutches bolt together Scribe bottom crutch along spar front back Unbolt crutch cut bot tom crutch along scribe lines recap have true crutch com plete length spar complete two pieces bottom crutchthe front piece goes front spar aft piece goes back spar tail Noting plan balsa begins ends cut back bottom crutch accordingly still cant glue anything together yet because 6 X 32 blind-nut maple spar bellcrank 4 X 40 nut plate stainless steel landing gear must installed After cutting land ing gear flat two bolt holes mounting drill 4 X 40 hole axle Grip top gear vise 4 end bend 90-degree angle Bolt gear front bottom crutch offset enough centerline clear mini-pipe inside cir cle During takeoff insures outboard wing tilted down also tail Vd cant drag wing-down position takeoff landing preceding steps make assembly easy job Bolt wing spar top portion crutch using bellcrank bolt pan hold-down bolts Glue Titebond put vaseline bolts periodically turn insure bound Glue position front bottom crutch gear Using clamps glue aft bottom crutch pieces position Using basswood 3/16 thick cut slot landing gear glue cap over bottom crutch wing spar aft crutch adjacent wing spar Countersink engine mounts K&B 65 take 4 X 40 countersunk machine screw Mount engine pan countersunk screws Carefully cut crutch allow engine slide position Bolt assembly pan engine installed Put spin ner propeller Install minipipe engine Put 1/64 balsa spacer side engine Place two pieces 1/16 X 1 X 7 basswood side spacer beside engine cowl Glue front along edges usually hold cowl sides place rubberband Remove 1/64-in spacers soon glue dry cowl sides important cowl fit nicely does touch engine Using 3/16in basswood cut hole perfectly fits head engine Remove minipipe glue cowl cap position meticulous attention prevent glue getting engine waiting cowl cap dry cut out stabi lizer sand shape Cut stabilizer precisely two center two blocks wood perfectly matchedthat wider width stabilizerprop up stabilizer tips match dihedral measurement plan Glue Titebond point wehaveadecision make airplanes fly clockwise right K&B 65 very important because venturi position permanently fixed unless have facilities make own rotor bladder tank used venturi position critical However using metal tank crankcase pressure venturi position very critical Secondly fly right because torque engine assists excellent takeoff characteristics single wheel above mind decide fly left counter-clockwise rec September1977 31 cowl should fit Closely touch engine has single small cooling slot side inside circlenote blunt end just aft minipipe Author states de scribed breakin followed model can turn 155 plus its first flight ommend bladder bladder will give faster speed tank will provide much higher percentage consistently fast runs continue construction Re move pan engine aircraft Trim off excess cowl cap sand fit Cut small opening front cooling 15 wide X 87 high cut should point two side cowls join moving aft side cowl will inside circle Bend two tail-skid wires shown plan Drill holes receive wires notch wood accordingly Epoxy wires place wrap copper wire solder Stay-Brite Reinstall engine pan place stabilizer position Notch crutch receive stabilizer Tite-bond bot tom stabilizer crutch craft now beginning take shape Place blocks double check alignment wing spar dihedral tail alignment tail respect thrust line square proceed final stages square dis assemble re-glue until square straight elevator located outboard side circle assists keeping outboard wing down takeoff landing Following outline plan carefully cut out elevator Bend 1/16 music wire form control horn install shown have two models horn up horn down Install horn apply up control pulls pushrod prevents flexing flying because down control applied infrequently hinges elevator parachute nylon thread sewn figure-eight pat tern thread very strong will absorb vibration exceptionally well Make Z-bend 1/16-in pushrod slip place control horn Cut pushrod about halfway bellcrank belicrank 50 stainless Mon oline buttons welded bellcrank polished remove burrs Install bellcrank buttons down Make Z-bend other end 1/16-in pushrod cut leaving -in gap elevator bellcrank neutral Place end pushrod 6-in long tight fitting brass tube Crimp solder end Stay-Brite will stiffen pushrod still permit some minor adjustment required Remove control system elevator Install bottom balsa block Sand bottom shape hollow out per plan Fiberglass inside using &B cloth Put bulkhead guide pushrod Tac glue top balsa block position carve Remove block hollow out per plan Resin inside glue permanently place Cut slot receive elevator slide pushrod place fish around see can hook elevator Z-bend Once youve mastered skill confident youll have trouble hooking up remove pushrod elevator finishing wing 012 aluminum obtained Sig process simple pre pared make spare Draw outline half wing though unfolded trail ing edge centerline layout leading edge Cut out pattern Place pattern metal brake small est radius available bend 45-de gree along centerline lead ing edge wing Set wing bottom wax paper trailing edge lined up edge flat straight table Use heavy stiff X 20 maple oak board Pull top wing down match trailing edge point wing will too thick Keep applying weight flexing aluminum till have desired con tour Once have contour epoxy trailing edge together Sand inside trailing edge carefully rough sandpaper bond will good Sand edges spar receive airfoil shape wing Slide wing half spar Hold light see spar wrinkling wing adjust required Epoxy wings spar placing some wood keys root help Continued page 83 32 Model Aviation bellcrank made 50 stainless steel Monoline buttons welded place pol ished remove burrs installed aircraft buttons facing down ne engine nueg Midwest formerly Harters proto speed pan portions front rear have cut away shown drawings nose filed conform plan two openings nostrils cut Out serve air intake Tank made K&H fuel can stock because nas iess tenoency ioam iuei man uglier sneet brass Pan cleaned 600 paper tank coated Silicon pressed place purpose again greatly reduce effects engine vibration fuel course reduces line drag speed goes up educational phase article con cerns engines Juniors inex perienced Seniors suggestion follow simple rules 1 Do disassemble engine will harm good 2 Do polish parts because does alter performance 3 Do loosen press-fit bearings 4 Do open venturi bigger hole because wont able get needle setting 5 Do use 65% nitro cause expensive 6 Do lap crankcase because youll make crooked will leak 7 Do polish rod because does lubricate well 8 Do grind portions off crank shaft counter-balance because will add vibration 9 Do deburr engine im proper tool bright light magnifying glass you will con vert miniscule burr bad groove insist working engine increase its power some things can done crowbar file axe Rework requires precise tools knowledge use best bet locate experienced speed flier machinist perhaps 20 true experts USA self-appointed experts necessarily proven ability Beware because love gain experience working engines follow ing true story relates self-appointed experts out flying young man arrived new 5T29 G-21 series tight youngster wanted advice expert proceeded mix toothpaste cutting oil fuel break very short time engine really loosened up fact could hold engine breeze would turn like pinwheel Needless say engine worn out So beware expert right guidance im portant item piston/sleeve fit can accomplished skillful use hone meticulous break-in procedure second important item head clear ance can accomplished shims George Aldrich Last least lower end must turn freely dont have help get some dont try own new KB 65s Tigre 40xs dont need thing youre choosy selection Sam Snyder 1041 East Pico Fresno CA 93704 r race j ou need obbypoxy HOBBYPOXY fuel proof high-nitro fuels HOBBYPOXY tough itll withstand abuse fast pit stops hard landings HOBBYPOXY super smooth adds miles-per-hour HOBBYPOXY easy use easy repair S dont forget Hobbypoxy glues strongest best construction Send free color card copy Hobbypoxy Painting Pointers booklet 36 Pine lOBBY POXY PROD UCTS Division PetthPamtCoInc Ole Reliable/Snyder continued page 32 secure Cut small balsa rib recess tip fill tips epoxy File shape Dont forget allow slots control lines respective locations plan position two 1/32-in dowels positions control lines put vaseline key points epoxy cant fill up block holes After epoxy dries slide out dowels aircraft now ready finish Glass cloth entire airplane except alu minum wing 3/4-Oz K&B wing joints place masking tape about fuselage 2-oz glass cloth build fillet top bottom feath ering aluminum remove tape strengthens joint smooths air flow After applying resin install ele vator hinges pushrod Spray K&B Super-Poxy primer Sand 400 grit apply K&B Super-Poxy color Polish aluminum wings should like thank following per sons over years have assisted Bill Wisniewski Jim Nightengale Cliff Telford Luke Roy John Newton George Aldrich Although everything September1977 83 writing advertisers mention read about MA Heres Balsarite TM Works. Iron-on coverings tend stick surface balsa often leaving trap ped air sagging coming unglued Balsarite sinks deep wood melts intermixes adhesive covering ironed No trapped air deep permanent adhesion Eliminates sag ging fuelcreep warping due mois ture makes hard-to-reach fillets easy cover use Monokote Solarfilm Coverite must use Balsarite takes gamble out covering iron-ons IRON-ON COVERING &L3j BALSA WOOD j ES IV E F USING WITH BALSARITE COVERITE 2779 Philmont Ave Huntingdcn Valley Pa machine original design through powerplant modification experience pertinent suggestions past have made current results possible CL Navy Carrier/Perry continued page 35 help participate year Ive asked Ted Kraver include rules questionnaire Hi Low Landing Carrier newsletter dont subscribe yet can get action sending five dollars Ted 1212 E Manhatton Dr Tempe AZ 85282 Send ques tionaires will see re sults get CLCR numerous proposals year three areas possible ma jor change subjects Profile Car rier engines bonus points scale-like models Profile Carrier event low-speed flight Profile Carrier engine proposal parallels similar proposals Slow Com bat Slow Rat Race purpose provide single set engine specifications three events help ensure ade quate supply engines available through normal retail outlets pro posals three major changes will probably voted separately would require engines produced least 1000 units Another would require crankcase crankshaft piston cylinder same manufacturer same engine design third change would delete plain-bearing require ment bonus point proposal would en courage use scale-like models Profile Carrier event bonus would small 10 points existing models will made obsolete yet should enough encourage building some scale-like models point award could changed next cycle after have some experience two types models competition scale re quirements quite liberal allow exist ing scale-like profile kits used permit simple installation of moveable surfaces commonly used Pro file Carrier models changes low-speed portion flights would two things would change penalty violations during low speed flight eliminate current conflicting rules say flight official after low-speed signal attempt violation dur ing low-speed flight Under proposed change low-speed violations would result loss low-speed score loss entire flight second change would delete current requirement model de viate radically flight characteris tics prototype substitute re quirement model exceed 600 nose-high attitude latter would provide uniformly enforceable definition Enforcement options include loss flight current penalty loss low-speed score intentional prolonged repeated deviations Another option five-point penalty time 600 limit exceeded would eliminate some judgment calls intentional uninten tional deviations failure correct imme diately would still mean loss flight low-speed score will require officials count deviations Summaries proposals results CLCB voting Competition Newsletter section past issues Richard L Perry S016 Angelita Ave Dayton 0H4S424 Ailerons/Bentson continued page 28 photographs Monterey illustrate simple modification can incorpo rated completed glider excessive work expense ailerons extend about two-thirds distance fuselage wing tips covering peeled back modifica tion made covering re-ironed back External aileron horns used avoid cutting fuselage open flew Monterey several times aileron installed good weather came before job finished aircraft rolled twice fast toward wing aileron Building scratch Id use slotted tubes engaged controls within fuselage im portant consideration model hits hard wings swing forward controls arent ripped out complete job coordinating controls producing realistic ap pearance flight reduce dihedral full-scale gliders may find will also have reduce verti cal tail area glider will tend drop its nose gain speed cir cling Spiral stability objective model will fly itself circling flight minimum attention Reducing fin rudder area may sound rash glider adequate aileron differential much dihedral requires compara tively little vertical tail surface Check relative rudder movement flying model toward away applying control roll first side other model should respond instantly roll too fast should product review product review product review Buzzbee Tachometer latest GloBee re lease small audio tachometer quickly accurately measures engine rpm match ing tones Simply listen engine turn control knob until its tone matches engines sound read rpm setting indi cated dial BuzzBee operates electronic tuning fork principle frequencies simulating engine speed sounds range 2600 35000 rpm Buzzbee effective measuring moving modelsairplanes heli copters boats carsas under re straint starting line unnecessary close whirling propellers en gine can heard rpm reading will de livered Buzzbee can duplicate engine speed settings superior trial runs tuning engine tachometer check compe titors engine rpm powered single NEDA 1604 Series 9-volt battery Inot includ ed Fusite Division 6000 Fernview Ave Cin cinnati OH 45212 product review product review product review 84 Model Aviation
Edition: Model Aviation - 1977/09
Page Numbers: 30, 31, 32, 83, 84
I OLE RELIABLE handle put aircraft son Max Its derivation stems fact son describes abilities setting needle valves speed jobs anything reliable However performance machine has defied chastisement start airplane has done reasonably well addition its first-place win last years Nats won first appearance originality design 1976 Anaheim Trade Show also first Oregon Northwest Regionals set na tional record can 165 mphone days might get lucky officially have building models since 1939 participating National events two Plymouth Internats family also flies UC scale stunt combat RC gliders competitive free flights B/C cate gories estimation no modeler puts effort 35 40 seconds flight U-control speed fliers Speed difficult exacting science simple master ways com binations fly Formula 40 event have attempted speed excellent starting point first move select K&B 65 engine Go local hobby shop pick out piston sticks tightest Run engine initially 65% Nitrotane fuel 11 X 4 Top Flite maple prop cut down size will turn fast 4-cycle will tach around 22500 rpm will take about 30 minutes break engine Dont let lean out run secured test stand Shut off fuel low tank put ting finger over intake en gine described will give 155 mph plus first flight airplane engine broken clean out residual fuel lubricate Marvel Mystery Oil preservation Keep engine clean building Put tissue exhaust masking tape around housing front bearing tissue intake Construction Fit engine Midwest formerly Harters proto speed pan pan must have portion cut off front tail shown plan file front conform plan engine mounted using 4 X 40 X s making sure pan flat engine perfectly centered doing pan work also cut nostrils air intake Drill pilot hole keep raising size bit time drill press down drill obtain angle shown plan Drill tap 6 X 32s holddowns cut curve needle valve Clean pan metal fragments next step make crutch method use basswood X 24 Cut heads off two 6 X 32 bolts sharpen Screw bolts pan hold-down holes sharpened tops protrude Center basswood block pan approximate posi tion depress pan tightly against basswood block two sharpened 6 X 32s will indent block thereby accu rately marking hold-down bolt posi tions Remove sharpened screws drill crutch accordingly bolt pan 30 Model Aviation am nas goou rueson 10 UU nappy sign can 165 mphone uays hopes hit speed officially covers en tire airplaneexcept metal wingwith 3/4-oz K&B glass cloth Now scribe basswood around pan will fit accurately Take pan off crutch transfer remaining out line crutch top view plans Carefully cut out crutch inside outside cut out trace crutch another piece basswood same size Cut out outside point now have two 3/s-in basswood crutches fit pan Put crutches aside Using piece very straight maple wide 3/t thick cut out wing spar shown plan spar flat top tapered bottom 3/16 tips Now comes tricky part Center spar perfectly over crutch hold-down holes Drill holes through spar Using two long 6 X 32 bolts place spar between two crutches bolt together Scribe bottom crutch along spar front back Unbolt crutch cut bot tom crutch along scribe lines recap have true crutch com plete length spar complete two pieces bottom crutchthe front piece goes front spar aft piece goes back spar tail Noting plan balsa begins ends cut back bottom crutch accordingly still cant glue anything together yet because 6 X 32 blind-nut maple spar bellcrank 4 X 40 nut plate stainless steel landing gear must installed After cutting land ing gear flat two bolt holes mounting drill 4 X 40 hole axle Grip top gear vise 4 end bend 90-degree angle Bolt gear front bottom crutch offset enough centerline clear mini-pipe inside cir cle During takeoff insures outboard wing tilted down also tail Vd cant drag wing-down position takeoff landing preceding steps make assembly easy job Bolt wing spar top portion crutch using bellcrank bolt pan hold-down bolts Glue Titebond put vaseline bolts periodically turn insure bound Glue position front bottom crutch gear Using clamps glue aft bottom crutch pieces position Using basswood 3/16 thick cut slot landing gear glue cap over bottom crutch wing spar aft crutch adjacent wing spar Countersink engine mounts K&B 65 take 4 X 40 countersunk machine screw Mount engine pan countersunk screws Carefully cut crutch allow engine slide position Bolt assembly pan engine installed Put spin ner propeller Install minipipe engine Put 1/64 balsa spacer side engine Place two pieces 1/16 X 1 X 7 basswood side spacer beside engine cowl Glue front along edges usually hold cowl sides place rubberband Remove 1/64-in spacers soon glue dry cowl sides important cowl fit nicely does touch engine Using 3/16in basswood cut hole perfectly fits head engine Remove minipipe glue cowl cap position meticulous attention prevent glue getting engine waiting cowl cap dry cut out stabi lizer sand shape Cut stabilizer precisely two center two blocks wood perfectly matchedthat wider width stabilizerprop up stabilizer tips match dihedral measurement plan Glue Titebond point wehaveadecision make airplanes fly clockwise right K&B 65 very important because venturi position permanently fixed unless have facilities make own rotor bladder tank used venturi position critical However using metal tank crankcase pressure venturi position very critical Secondly fly right because torque engine assists excellent takeoff characteristics single wheel above mind decide fly left counter-clockwise rec September1977 31 cowl should fit Closely touch engine has single small cooling slot side inside circlenote blunt end just aft minipipe Author states de scribed breakin followed model can turn 155 plus its first flight ommend bladder bladder will give faster speed tank will provide much higher percentage consistently fast runs continue construction Re move pan engine aircraft Trim off excess cowl cap sand fit Cut small opening front cooling 15 wide X 87 high cut should point two side cowls join moving aft side cowl will inside circle Bend two tail-skid wires shown plan Drill holes receive wires notch wood accordingly Epoxy wires place wrap copper wire solder Stay-Brite Reinstall engine pan place stabilizer position Notch crutch receive stabilizer Tite-bond bot tom stabilizer crutch craft now beginning take shape Place blocks double check alignment wing spar dihedral tail alignment tail respect thrust line square proceed final stages square dis assemble re-glue until square straight elevator located outboard side circle assists keeping outboard wing down takeoff landing Following outline plan carefully cut out elevator Bend 1/16 music wire form control horn install shown have two models horn up horn down Install horn apply up control pulls pushrod prevents flexing flying because down control applied infrequently hinges elevator parachute nylon thread sewn figure-eight pat tern thread very strong will absorb vibration exceptionally well Make Z-bend 1/16-in pushrod slip place control horn Cut pushrod about halfway bellcrank belicrank 50 stainless Mon oline buttons welded bellcrank polished remove burrs Install bellcrank buttons down Make Z-bend other end 1/16-in pushrod cut leaving -in gap elevator bellcrank neutral Place end pushrod 6-in long tight fitting brass tube Crimp solder end Stay-Brite will stiffen pushrod still permit some minor adjustment required Remove control system elevator Install bottom balsa block Sand bottom shape hollow out per plan Fiberglass inside using &B cloth Put bulkhead guide pushrod Tac glue top balsa block position carve Remove block hollow out per plan Resin inside glue permanently place Cut slot receive elevator slide pushrod place fish around see can hook elevator Z-bend Once youve mastered skill confident youll have trouble hooking up remove pushrod elevator finishing wing 012 aluminum obtained Sig process simple pre pared make spare Draw outline half wing though unfolded trail ing edge centerline layout leading edge Cut out pattern Place pattern metal brake small est radius available bend 45-de gree along centerline lead ing edge wing Set wing bottom wax paper trailing edge lined up edge flat straight table Use heavy stiff X 20 maple oak board Pull top wing down match trailing edge point wing will too thick Keep applying weight flexing aluminum till have desired con tour Once have contour epoxy trailing edge together Sand inside trailing edge carefully rough sandpaper bond will good Sand edges spar receive airfoil shape wing Slide wing half spar Hold light see spar wrinkling wing adjust required Epoxy wings spar placing some wood keys root help Continued page 83 32 Model Aviation bellcrank made 50 stainless steel Monoline buttons welded place pol ished remove burrs installed aircraft buttons facing down ne engine nueg Midwest formerly Harters proto speed pan portions front rear have cut away shown drawings nose filed conform plan two openings nostrils cut Out serve air intake Tank made K&H fuel can stock because nas iess tenoency ioam iuei man uglier sneet brass Pan cleaned 600 paper tank coated Silicon pressed place purpose again greatly reduce effects engine vibration fuel course reduces line drag speed goes up educational phase article con cerns engines Juniors inex perienced Seniors suggestion follow simple rules 1 Do disassemble engine will harm good 2 Do polish parts because does alter performance 3 Do loosen press-fit bearings 4 Do open venturi bigger hole because wont able get needle setting 5 Do use 65% nitro cause expensive 6 Do lap crankcase because youll make crooked will leak 7 Do polish rod because does lubricate well 8 Do grind portions off crank shaft counter-balance because will add vibration 9 Do deburr engine im proper tool bright light magnifying glass you will con vert miniscule burr bad groove insist working engine increase its power some things can done crowbar file axe Rework requires precise tools knowledge use best bet locate experienced speed flier machinist perhaps 20 true experts USA self-appointed experts necessarily proven ability Beware because love gain experience working engines follow ing true story relates self-appointed experts out flying young man arrived new 5T29 G-21 series tight youngster wanted advice expert proceeded mix toothpaste cutting oil fuel break very short time engine really loosened up fact could hold engine breeze would turn like pinwheel Needless say engine worn out So beware expert right guidance im portant item piston/sleeve fit can accomplished skillful use hone meticulous break-in procedure second important item head clear ance can accomplished shims George Aldrich Last least lower end must turn freely dont have help get some dont try own new KB 65s Tigre 40xs dont need thing youre choosy selection Sam Snyder 1041 East Pico Fresno CA 93704 r race j ou need obbypoxy HOBBYPOXY fuel proof high-nitro fuels HOBBYPOXY tough itll withstand abuse fast pit stops hard landings HOBBYPOXY super smooth adds miles-per-hour HOBBYPOXY easy use easy repair S dont forget Hobbypoxy glues strongest best construction Send free color card copy Hobbypoxy Painting Pointers booklet 36 Pine lOBBY POXY PROD UCTS Division PetthPamtCoInc Ole Reliable/Snyder continued page 32 secure Cut small balsa rib recess tip fill tips epoxy File shape Dont forget allow slots control lines respective locations plan position two 1/32-in dowels positions control lines put vaseline key points epoxy cant fill up block holes After epoxy dries slide out dowels aircraft now ready finish Glass cloth entire airplane except alu minum wing 3/4-Oz K&B wing joints place masking tape about fuselage 2-oz glass cloth build fillet top bottom feath ering aluminum remove tape strengthens joint smooths air flow After applying resin install ele vator hinges pushrod Spray K&B Super-Poxy primer Sand 400 grit apply K&B Super-Poxy color Polish aluminum wings should like thank following per sons over years have assisted Bill Wisniewski Jim Nightengale Cliff Telford Luke Roy John Newton George Aldrich Although everything September1977 83 writing advertisers mention read about MA Heres Balsarite TM Works. Iron-on coverings tend stick surface balsa often leaving trap ped air sagging coming unglued Balsarite sinks deep wood melts intermixes adhesive covering ironed No trapped air deep permanent adhesion Eliminates sag ging fuelcreep warping due mois ture makes hard-to-reach fillets easy cover use Monokote Solarfilm Coverite must use Balsarite takes gamble out covering iron-ons IRON-ON COVERING &L3j BALSA WOOD j ES IV E F USING WITH BALSARITE COVERITE 2779 Philmont Ave Huntingdcn Valley Pa machine original design through powerplant modification experience pertinent suggestions past have made current results possible CL Navy Carrier/Perry continued page 35 help participate year Ive asked Ted Kraver include rules questionnaire Hi Low Landing Carrier newsletter dont subscribe yet can get action sending five dollars Ted 1212 E Manhatton Dr Tempe AZ 85282 Send ques tionaires will see re sults get CLCR numerous proposals year three areas possible ma jor change subjects Profile Car rier engines bonus points scale-like models Profile Carrier event low-speed flight Profile Carrier engine proposal parallels similar proposals Slow Com bat Slow Rat Race purpose provide single set engine specifications three events help ensure ade quate supply engines available through normal retail outlets pro posals three major changes will probably voted separately would require engines produced least 1000 units Another would require crankcase crankshaft piston cylinder same manufacturer same engine design third change would delete plain-bearing require ment bonus point proposal would en courage use scale-like models Profile Carrier event bonus would small 10 points existing models will made obsolete yet should enough encourage building some scale-like models point award could changed next cycle after have some experience two types models competition scale re quirements quite liberal allow exist ing scale-like profile kits used permit simple installation of moveable surfaces commonly used Pro file Carrier models changes low-speed portion flights would two things would change penalty violations during low speed flight eliminate current conflicting rules say flight official after low-speed signal attempt violation dur ing low-speed flight Under proposed change low-speed violations would result loss low-speed score loss entire flight second change would delete current requirement model de viate radically flight characteris tics prototype substitute re quirement model exceed 600 nose-high attitude latter would provide uniformly enforceable definition Enforcement options include loss flight current penalty loss low-speed score intentional prolonged repeated deviations Another option five-point penalty time 600 limit exceeded would eliminate some judgment calls intentional uninten tional deviations failure correct imme diately would still mean loss flight low-speed score will require officials count deviations Summaries proposals results CLCB voting Competition Newsletter section past issues Richard L Perry S016 Angelita Ave Dayton 0H4S424 Ailerons/Bentson continued page 28 photographs Monterey illustrate simple modification can incorpo rated completed glider excessive work expense ailerons extend about two-thirds distance fuselage wing tips covering peeled back modifica tion made covering re-ironed back External aileron horns used avoid cutting fuselage open flew Monterey several times aileron installed good weather came before job finished aircraft rolled twice fast toward wing aileron Building scratch Id use slotted tubes engaged controls within fuselage im portant consideration model hits hard wings swing forward controls arent ripped out complete job coordinating controls producing realistic ap pearance flight reduce dihedral full-scale gliders may find will also have reduce verti cal tail area glider will tend drop its nose gain speed cir cling Spiral stability objective model will fly itself circling flight minimum attention Reducing fin rudder area may sound rash glider adequate aileron differential much dihedral requires compara tively little vertical tail surface Check relative rudder movement flying model toward away applying control roll first side other model should respond instantly roll too fast should product review product review product review Buzzbee Tachometer latest GloBee re lease small audio tachometer quickly accurately measures engine rpm match ing tones Simply listen engine turn control knob until its tone matches engines sound read rpm setting indi cated dial BuzzBee operates electronic tuning fork principle frequencies simulating engine speed sounds range 2600 35000 rpm Buzzbee effective measuring moving modelsairplanes heli copters boats carsas under re straint starting line unnecessary close whirling propellers en gine can heard rpm reading will de livered Buzzbee can duplicate engine speed settings superior trial runs tuning engine tachometer check compe titors engine rpm powered single NEDA 1604 Series 9-volt battery Inot includ ed Fusite Division 6000 Fernview Ave Cin cinnati OH 45212 product review product review product review 84 Model Aviation
Edition: Model Aviation - 1977/09
Page Numbers: 30, 31, 32, 83, 84
I OLE RELIABLE handle put aircraft son Max Its derivation stems fact son describes abilities setting needle valves speed jobs anything reliable However performance machine has defied chastisement start airplane has done reasonably well addition its first-place win last years Nats won first appearance originality design 1976 Anaheim Trade Show also first Oregon Northwest Regionals set na tional record can 165 mphone days might get lucky officially have building models since 1939 participating National events two Plymouth Internats family also flies UC scale stunt combat RC gliders competitive free flights B/C cate gories estimation no modeler puts effort 35 40 seconds flight U-control speed fliers Speed difficult exacting science simple master ways com binations fly Formula 40 event have attempted speed excellent starting point first move select K&B 65 engine Go local hobby shop pick out piston sticks tightest Run engine initially 65% Nitrotane fuel 11 X 4 Top Flite maple prop cut down size will turn fast 4-cycle will tach around 22500 rpm will take about 30 minutes break engine Dont let lean out run secured test stand Shut off fuel low tank put ting finger over intake en gine described will give 155 mph plus first flight airplane engine broken clean out residual fuel lubricate Marvel Mystery Oil preservation Keep engine clean building Put tissue exhaust masking tape around housing front bearing tissue intake Construction Fit engine Midwest formerly Harters proto speed pan pan must have portion cut off front tail shown plan file front conform plan engine mounted using 4 X 40 X s making sure pan flat engine perfectly centered doing pan work also cut nostrils air intake Drill pilot hole keep raising size bit time drill press down drill obtain angle shown plan Drill tap 6 X 32s holddowns cut curve needle valve Clean pan metal fragments next step make crutch method use basswood X 24 Cut heads off two 6 X 32 bolts sharpen Screw bolts pan hold-down holes sharpened tops protrude Center basswood block pan approximate posi tion depress pan tightly against basswood block two sharpened 6 X 32s will indent block thereby accu rately marking hold-down bolt posi tions Remove sharpened screws drill crutch accordingly bolt pan 30 Model Aviation am nas goou rueson 10 UU nappy sign can 165 mphone uays hopes hit speed officially covers en tire airplaneexcept metal wingwith 3/4-oz K&B glass cloth Now scribe basswood around pan will fit accurately Take pan off crutch transfer remaining out line crutch top view plans Carefully cut out crutch inside outside cut out trace crutch another piece basswood same size Cut out outside point now have two 3/s-in basswood crutches fit pan Put crutches aside Using piece very straight maple wide 3/t thick cut out wing spar shown plan spar flat top tapered bottom 3/16 tips Now comes tricky part Center spar perfectly over crutch hold-down holes Drill holes through spar Using two long 6 X 32 bolts place spar between two crutches bolt together Scribe bottom crutch along spar front back Unbolt crutch cut bot tom crutch along scribe lines recap have true crutch com plete length spar complete two pieces bottom crutchthe front piece goes front spar aft piece goes back spar tail Noting plan balsa begins ends cut back bottom crutch accordingly still cant glue anything together yet because 6 X 32 blind-nut maple spar bellcrank 4 X 40 nut plate stainless steel landing gear must installed After cutting land ing gear flat two bolt holes mounting drill 4 X 40 hole axle Grip top gear vise 4 end bend 90-degree angle Bolt gear front bottom crutch offset enough centerline clear mini-pipe inside cir cle During takeoff insures outboard wing tilted down also tail Vd cant drag wing-down position takeoff landing preceding steps make assembly easy job Bolt wing spar top portion crutch using bellcrank bolt pan hold-down bolts Glue Titebond put vaseline bolts periodically turn insure bound Glue position front bottom crutch gear Using clamps glue aft bottom crutch pieces position Using basswood 3/16 thick cut slot landing gear glue cap over bottom crutch wing spar aft crutch adjacent wing spar Countersink engine mounts K&B 65 take 4 X 40 countersunk machine screw Mount engine pan countersunk screws Carefully cut crutch allow engine slide position Bolt assembly pan engine installed Put spin ner propeller Install minipipe engine Put 1/64 balsa spacer side engine Place two pieces 1/16 X 1 X 7 basswood side spacer beside engine cowl Glue front along edges usually hold cowl sides place rubberband Remove 1/64-in spacers soon glue dry cowl sides important cowl fit nicely does touch engine Using 3/16in basswood cut hole perfectly fits head engine Remove minipipe glue cowl cap position meticulous attention prevent glue getting engine waiting cowl cap dry cut out stabi lizer sand shape Cut stabilizer precisely two center two blocks wood perfectly matchedthat wider width stabilizerprop up stabilizer tips match dihedral measurement plan Glue Titebond point wehaveadecision make airplanes fly clockwise right K&B 65 very important because venturi position permanently fixed unless have facilities make own rotor bladder tank used venturi position critical However using metal tank crankcase pressure venturi position very critical Secondly fly right because torque engine assists excellent takeoff characteristics single wheel above mind decide fly left counter-clockwise rec September1977 31 cowl should fit Closely touch engine has single small cooling slot side inside circlenote blunt end just aft minipipe Author states de scribed breakin followed model can turn 155 plus its first flight ommend bladder bladder will give faster speed tank will provide much higher percentage consistently fast runs continue construction Re move pan engine aircraft Trim off excess cowl cap sand fit Cut small opening front cooling 15 wide X 87 high cut should point two side cowls join moving aft side cowl will inside circle Bend two tail-skid wires shown plan Drill holes receive wires notch wood accordingly Epoxy wires place wrap copper wire solder Stay-Brite Reinstall engine pan place stabilizer position Notch crutch receive stabilizer Tite-bond bot tom stabilizer crutch craft now beginning take shape Place blocks double check alignment wing spar dihedral tail alignment tail respect thrust line square proceed final stages square dis assemble re-glue until square straight elevator located outboard side circle assists keeping outboard wing down takeoff landing Following outline plan carefully cut out elevator Bend 1/16 music wire form control horn install shown have two models horn up horn down Install horn apply up control pulls pushrod prevents flexing flying because down control applied infrequently hinges elevator parachute nylon thread sewn figure-eight pat tern thread very strong will absorb vibration exceptionally well Make Z-bend 1/16-in pushrod slip place control horn Cut pushrod about halfway bellcrank belicrank 50 stainless Mon oline buttons welded bellcrank polished remove burrs Install bellcrank buttons down Make Z-bend other end 1/16-in pushrod cut leaving -in gap elevator bellcrank neutral Place end pushrod 6-in long tight fitting brass tube Crimp solder end Stay-Brite will stiffen pushrod still permit some minor adjustment required Remove control system elevator Install bottom balsa block Sand bottom shape hollow out per plan Fiberglass inside using &B cloth Put bulkhead guide pushrod Tac glue top balsa block position carve Remove block hollow out per plan Resin inside glue permanently place Cut slot receive elevator slide pushrod place fish around see can hook elevator Z-bend Once youve mastered skill confident youll have trouble hooking up remove pushrod elevator finishing wing 012 aluminum obtained Sig process simple pre pared make spare Draw outline half wing though unfolded trail ing edge centerline layout leading edge Cut out pattern Place pattern metal brake small est radius available bend 45-de gree along centerline lead ing edge wing Set wing bottom wax paper trailing edge lined up edge flat straight table Use heavy stiff X 20 maple oak board Pull top wing down match trailing edge point wing will too thick Keep applying weight flexing aluminum till have desired con tour Once have contour epoxy trailing edge together Sand inside trailing edge carefully rough sandpaper bond will good Sand edges spar receive airfoil shape wing Slide wing half spar Hold light see spar wrinkling wing adjust required Epoxy wings spar placing some wood keys root help Continued page 83 32 Model Aviation bellcrank made 50 stainless steel Monoline buttons welded place pol ished remove burrs installed aircraft buttons facing down ne engine nueg Midwest formerly Harters proto speed pan portions front rear have cut away shown drawings nose filed conform plan two openings nostrils cut Out serve air intake Tank made K&H fuel can stock because nas iess tenoency ioam iuei man uglier sneet brass Pan cleaned 600 paper tank coated Silicon pressed place purpose again greatly reduce effects engine vibration fuel course reduces line drag speed goes up educational phase article con cerns engines Juniors inex perienced Seniors suggestion follow simple rules 1 Do disassemble engine will harm good 2 Do polish parts because does alter performance 3 Do loosen press-fit bearings 4 Do open venturi bigger hole because wont able get needle setting 5 Do use 65% nitro cause expensive 6 Do lap crankcase because youll make crooked will leak 7 Do polish rod because does lubricate well 8 Do grind portions off crank shaft counter-balance because will add vibration 9 Do deburr engine im proper tool bright light magnifying glass you will con vert miniscule burr bad groove insist working engine increase its power some things can done crowbar file axe Rework requires precise tools knowledge use best bet locate experienced speed flier machinist perhaps 20 true experts USA self-appointed experts necessarily proven ability Beware because love gain experience working engines follow ing true story relates self-appointed experts out flying young man arrived new 5T29 G-21 series tight youngster wanted advice expert proceeded mix toothpaste cutting oil fuel break very short time engine really loosened up fact could hold engine breeze would turn like pinwheel Needless say engine worn out So beware expert right guidance im portant item piston/sleeve fit can accomplished skillful use hone meticulous break-in procedure second important item head clear ance can accomplished shims George Aldrich Last least lower end must turn freely dont have help get some dont try own new KB 65s Tigre 40xs dont need thing youre choosy selection Sam Snyder 1041 East Pico Fresno CA 93704 r race j ou need obbypoxy HOBBYPOXY fuel proof high-nitro fuels HOBBYPOXY tough itll withstand abuse fast pit stops hard landings HOBBYPOXY super smooth adds miles-per-hour HOBBYPOXY easy use easy repair S dont forget Hobbypoxy glues strongest best construction Send free color card copy Hobbypoxy Painting Pointers booklet 36 Pine lOBBY POXY PROD UCTS Division PetthPamtCoInc Ole Reliable/Snyder continued page 32 secure Cut small balsa rib recess tip fill tips epoxy File shape Dont forget allow slots control lines respective locations plan position two 1/32-in dowels positions control lines put vaseline key points epoxy cant fill up block holes After epoxy dries slide out dowels aircraft now ready finish Glass cloth entire airplane except alu minum wing 3/4-Oz K&B wing joints place masking tape about fuselage 2-oz glass cloth build fillet top bottom feath ering aluminum remove tape strengthens joint smooths air flow After applying resin install ele vator hinges pushrod Spray K&B Super-Poxy primer Sand 400 grit apply K&B Super-Poxy color Polish aluminum wings should like thank following per sons over years have assisted Bill Wisniewski Jim Nightengale Cliff Telford Luke Roy John Newton George Aldrich Although everything September1977 83 writing advertisers mention read about MA Heres Balsarite TM Works. Iron-on coverings tend stick surface balsa often leaving trap ped air sagging coming unglued Balsarite sinks deep wood melts intermixes adhesive covering ironed No trapped air deep permanent adhesion Eliminates sag ging fuelcreep warping due mois ture makes hard-to-reach fillets easy cover use Monokote Solarfilm Coverite must use Balsarite takes gamble out covering iron-ons IRON-ON COVERING &L3j BALSA WOOD j ES IV E F USING WITH BALSARITE COVERITE 2779 Philmont Ave Huntingdcn Valley Pa machine original design through powerplant modification experience pertinent suggestions past have made current results possible CL Navy Carrier/Perry continued page 35 help participate year Ive asked Ted Kraver include rules questionnaire Hi Low Landing Carrier newsletter dont subscribe yet can get action sending five dollars Ted 1212 E Manhatton Dr Tempe AZ 85282 Send ques tionaires will see re sults get CLCR numerous proposals year three areas possible ma jor change subjects Profile Car rier engines bonus points scale-like models Profile Carrier event low-speed flight Profile Carrier engine proposal parallels similar proposals Slow Com bat Slow Rat Race purpose provide single set engine specifications three events help ensure ade quate supply engines available through normal retail outlets pro posals three major changes will probably voted separately would require engines produced least 1000 units Another would require crankcase crankshaft piston cylinder same manufacturer same engine design third change would delete plain-bearing require ment bonus point proposal would en courage use scale-like models Profile Carrier event bonus would small 10 points existing models will made obsolete yet should enough encourage building some scale-like models point award could changed next cycle after have some experience two types models competition scale re quirements quite liberal allow exist ing scale-like profile kits used permit simple installation of moveable surfaces commonly used Pro file Carrier models changes low-speed portion flights would two things would change penalty violations during low speed flight eliminate current conflicting rules say flight official after low-speed signal attempt violation dur ing low-speed flight Under proposed change low-speed violations would result loss low-speed score loss entire flight second change would delete current requirement model de viate radically flight characteris tics prototype substitute re quirement model exceed 600 nose-high attitude latter would provide uniformly enforceable definition Enforcement options include loss flight current penalty loss low-speed score intentional prolonged repeated deviations Another option five-point penalty time 600 limit exceeded would eliminate some judgment calls intentional uninten tional deviations failure correct imme diately would still mean loss flight low-speed score will require officials count deviations Summaries proposals results CLCB voting Competition Newsletter section past issues Richard L Perry S016 Angelita Ave Dayton 0H4S424 Ailerons/Bentson continued page 28 photographs Monterey illustrate simple modification can incorpo rated completed glider excessive work expense ailerons extend about two-thirds distance fuselage wing tips covering peeled back modifica tion made covering re-ironed back External aileron horns used avoid cutting fuselage open flew Monterey several times aileron installed good weather came before job finished aircraft rolled twice fast toward wing aileron Building scratch Id use slotted tubes engaged controls within fuselage im portant consideration model hits hard wings swing forward controls arent ripped out complete job coordinating controls producing realistic ap pearance flight reduce dihedral full-scale gliders may find will also have reduce verti cal tail area glider will tend drop its nose gain speed cir cling Spiral stability objective model will fly itself circling flight minimum attention Reducing fin rudder area may sound rash glider adequate aileron differential much dihedral requires compara tively little vertical tail surface Check relative rudder movement flying model toward away applying control roll first side other model should respond instantly roll too fast should product review product review product review Buzzbee Tachometer latest GloBee re lease small audio tachometer quickly accurately measures engine rpm match ing tones Simply listen engine turn control knob until its tone matches engines sound read rpm setting indi cated dial BuzzBee operates electronic tuning fork principle frequencies simulating engine speed sounds range 2600 35000 rpm Buzzbee effective measuring moving modelsairplanes heli copters boats carsas under re straint starting line unnecessary close whirling propellers en gine can heard rpm reading will de livered Buzzbee can duplicate engine speed settings superior trial runs tuning engine tachometer check compe titors engine rpm powered single NEDA 1604 Series 9-volt battery Inot includ ed Fusite Division 6000 Fernview Ave Cin cinnati OH 45212 product review product review product review 84 Model Aviation
Edition: Model Aviation - 1977/09
Page Numbers: 30, 31, 32, 83, 84
I OLE RELIABLE handle put aircraft son Max Its derivation stems fact son describes abilities setting needle valves speed jobs anything reliable However performance machine has defied chastisement start airplane has done reasonably well addition its first-place win last years Nats won first appearance originality design 1976 Anaheim Trade Show also first Oregon Northwest Regionals set na tional record can 165 mphone days might get lucky officially have building models since 1939 participating National events two Plymouth Internats family also flies UC scale stunt combat RC gliders competitive free flights B/C cate gories estimation no modeler puts effort 35 40 seconds flight U-control speed fliers Speed difficult exacting science simple master ways com binations fly Formula 40 event have attempted speed excellent starting point first move select K&B 65 engine Go local hobby shop pick out piston sticks tightest Run engine initially 65% Nitrotane fuel 11 X 4 Top Flite maple prop cut down size will turn fast 4-cycle will tach around 22500 rpm will take about 30 minutes break engine Dont let lean out run secured test stand Shut off fuel low tank put ting finger over intake en gine described will give 155 mph plus first flight airplane engine broken clean out residual fuel lubricate Marvel Mystery Oil preservation Keep engine clean building Put tissue exhaust masking tape around housing front bearing tissue intake Construction Fit engine Midwest formerly Harters proto speed pan pan must have portion cut off front tail shown plan file front conform plan engine mounted using 4 X 40 X s making sure pan flat engine perfectly centered doing pan work also cut nostrils air intake Drill pilot hole keep raising size bit time drill press down drill obtain angle shown plan Drill tap 6 X 32s holddowns cut curve needle valve Clean pan metal fragments next step make crutch method use basswood X 24 Cut heads off two 6 X 32 bolts sharpen Screw bolts pan hold-down holes sharpened tops protrude Center basswood block pan approximate posi tion depress pan tightly against basswood block two sharpened 6 X 32s will indent block thereby accu rately marking hold-down bolt posi tions Remove sharpened screws drill crutch accordingly bolt pan 30 Model Aviation am nas goou rueson 10 UU nappy sign can 165 mphone uays hopes hit speed officially covers en tire airplaneexcept metal wingwith 3/4-oz K&B glass cloth Now scribe basswood around pan will fit accurately Take pan off crutch transfer remaining out line crutch top view plans Carefully cut out crutch inside outside cut out trace crutch another piece basswood same size Cut out outside point now have two 3/s-in basswood crutches fit pan Put crutches aside Using piece very straight maple wide 3/t thick cut out wing spar shown plan spar flat top tapered bottom 3/16 tips Now comes tricky part Center spar perfectly over crutch hold-down holes Drill holes through spar Using two long 6 X 32 bolts place spar between two crutches bolt together Scribe bottom crutch along spar front back Unbolt crutch cut bot tom crutch along scribe lines recap have true crutch com plete length spar complete two pieces bottom crutchthe front piece goes front spar aft piece goes back spar tail Noting plan balsa begins ends cut back bottom crutch accordingly still cant glue anything together yet because 6 X 32 blind-nut maple spar bellcrank 4 X 40 nut plate stainless steel landing gear must installed After cutting land ing gear flat two bolt holes mounting drill 4 X 40 hole axle Grip top gear vise 4 end bend 90-degree angle Bolt gear front bottom crutch offset enough centerline clear mini-pipe inside cir cle During takeoff insures outboard wing tilted down also tail Vd cant drag wing-down position takeoff landing preceding steps make assembly easy job Bolt wing spar top portion crutch using bellcrank bolt pan hold-down bolts Glue Titebond put vaseline bolts periodically turn insure bound Glue position front bottom crutch gear Using clamps glue aft bottom crutch pieces position Using basswood 3/16 thick cut slot landing gear glue cap over bottom crutch wing spar aft crutch adjacent wing spar Countersink engine mounts K&B 65 take 4 X 40 countersunk machine screw Mount engine pan countersunk screws Carefully cut crutch allow engine slide position Bolt assembly pan engine installed Put spin ner propeller Install minipipe engine Put 1/64 balsa spacer side engine Place two pieces 1/16 X 1 X 7 basswood side spacer beside engine cowl Glue front along edges usually hold cowl sides place rubberband Remove 1/64-in spacers soon glue dry cowl sides important cowl fit nicely does touch engine Using 3/16in basswood cut hole perfectly fits head engine Remove minipipe glue cowl cap position meticulous attention prevent glue getting engine waiting cowl cap dry cut out stabi lizer sand shape Cut stabilizer precisely two center two blocks wood perfectly matchedthat wider width stabilizerprop up stabilizer tips match dihedral measurement plan Glue Titebond point wehaveadecision make airplanes fly clockwise right K&B 65 very important because venturi position permanently fixed unless have facilities make own rotor bladder tank used venturi position critical However using metal tank crankcase pressure venturi position very critical Secondly fly right because torque engine assists excellent takeoff characteristics single wheel above mind decide fly left counter-clockwise rec September1977 31 cowl should fit Closely touch engine has single small cooling slot side inside circlenote blunt end just aft minipipe Author states de scribed breakin followed model can turn 155 plus its first flight ommend bladder bladder will give faster speed tank will provide much higher percentage consistently fast runs continue construction Re move pan engine aircraft Trim off excess cowl cap sand fit Cut small opening front cooling 15 wide X 87 high cut should point two side cowls join moving aft side cowl will inside circle Bend two tail-skid wires shown plan Drill holes receive wires notch wood accordingly Epoxy wires place wrap copper wire solder Stay-Brite Reinstall engine pan place stabilizer position Notch crutch receive stabilizer Tite-bond bot tom stabilizer crutch craft now beginning take shape Place blocks double check alignment wing spar dihedral tail alignment tail respect thrust line square proceed final stages square dis assemble re-glue until square straight elevator located outboard side circle assists keeping outboard wing down takeoff landing Following outline plan carefully cut out elevator Bend 1/16 music wire form control horn install shown have two models horn up horn down Install horn apply up control pulls pushrod prevents flexing flying because down control applied infrequently hinges elevator parachute nylon thread sewn figure-eight pat tern thread very strong will absorb vibration exceptionally well Make Z-bend 1/16-in pushrod slip place control horn Cut pushrod about halfway bellcrank belicrank 50 stainless Mon oline buttons welded bellcrank polished remove burrs Install bellcrank buttons down Make Z-bend other end 1/16-in pushrod cut leaving -in gap elevator bellcrank neutral Place end pushrod 6-in long tight fitting brass tube Crimp solder end Stay-Brite will stiffen pushrod still permit some minor adjustment required Remove control system elevator Install bottom balsa block Sand bottom shape hollow out per plan Fiberglass inside using &B cloth Put bulkhead guide pushrod Tac glue top balsa block position carve Remove block hollow out per plan Resin inside glue permanently place Cut slot receive elevator slide pushrod place fish around see can hook elevator Z-bend Once youve mastered skill confident youll have trouble hooking up remove pushrod elevator finishing wing 012 aluminum obtained Sig process simple pre pared make spare Draw outline half wing though unfolded trail ing edge centerline layout leading edge Cut out pattern Place pattern metal brake small est radius available bend 45-de gree along centerline lead ing edge wing Set wing bottom wax paper trailing edge lined up edge flat straight table Use heavy stiff X 20 maple oak board Pull top wing down match trailing edge point wing will too thick Keep applying weight flexing aluminum till have desired con tour Once have contour epoxy trailing edge together Sand inside trailing edge carefully rough sandpaper bond will good Sand edges spar receive airfoil shape wing Slide wing half spar Hold light see spar wrinkling wing adjust required Epoxy wings spar placing some wood keys root help Continued page 83 32 Model Aviation bellcrank made 50 stainless steel Monoline buttons welded place pol ished remove burrs installed aircraft buttons facing down ne engine nueg Midwest formerly Harters proto speed pan portions front rear have cut away shown drawings nose filed conform plan two openings nostrils cut Out serve air intake Tank made K&H fuel can stock because nas iess tenoency ioam iuei man uglier sneet brass Pan cleaned 600 paper tank coated Silicon pressed place purpose again greatly reduce effects engine vibration fuel course reduces line drag speed goes up educational phase article con cerns engines Juniors inex perienced Seniors suggestion follow simple rules 1 Do disassemble engine will harm good 2 Do polish parts because does alter performance 3 Do loosen press-fit bearings 4 Do open venturi bigger hole because wont able get needle setting 5 Do use 65% nitro cause expensive 6 Do lap crankcase because youll make crooked will leak 7 Do polish rod because does lubricate well 8 Do grind portions off crank shaft counter-balance because will add vibration 9 Do deburr engine im proper tool bright light magnifying glass you will con vert miniscule burr bad groove insist working engine increase its power some things can done crowbar file axe Rework requires precise tools knowledge use best bet locate experienced speed flier machinist perhaps 20 true experts USA self-appointed experts necessarily proven ability Beware because love gain experience working engines follow ing true story relates self-appointed experts out flying young man arrived new 5T29 G-21 series tight youngster wanted advice expert proceeded mix toothpaste cutting oil fuel break very short time engine really loosened up fact could hold engine breeze would turn like pinwheel Needless say engine worn out So beware expert right guidance im portant item piston/sleeve fit can accomplished skillful use hone meticulous break-in procedure second important item head clear ance can accomplished shims George Aldrich Last least lower end must turn freely dont have help get some dont try own new KB 65s Tigre 40xs dont need thing youre choosy selection Sam Snyder 1041 East Pico Fresno CA 93704 r race j ou need obbypoxy HOBBYPOXY fuel proof high-nitro fuels HOBBYPOXY tough itll withstand abuse fast pit stops hard landings HOBBYPOXY super smooth adds miles-per-hour HOBBYPOXY easy use easy repair S dont forget Hobbypoxy glues strongest best construction Send free color card copy Hobbypoxy Painting Pointers booklet 36 Pine lOBBY POXY PROD UCTS Division PetthPamtCoInc Ole Reliable/Snyder continued page 32 secure Cut small balsa rib recess tip fill tips epoxy File shape Dont forget allow slots control lines respective locations plan position two 1/32-in dowels positions control lines put vaseline key points epoxy cant fill up block holes After epoxy dries slide out dowels aircraft now ready finish Glass cloth entire airplane except alu minum wing 3/4-Oz K&B wing joints place masking tape about fuselage 2-oz glass cloth build fillet top bottom feath ering aluminum remove tape strengthens joint smooths air flow After applying resin install ele vator hinges pushrod Spray K&B Super-Poxy primer Sand 400 grit apply K&B Super-Poxy color Polish aluminum wings should like thank following per sons over years have assisted Bill Wisniewski Jim Nightengale Cliff Telford Luke Roy John Newton George Aldrich Although everything September1977 83 writing advertisers mention read about MA Heres Balsarite TM Works. Iron-on coverings tend stick surface balsa often leaving trap ped air sagging coming unglued Balsarite sinks deep wood melts intermixes adhesive covering ironed No trapped air deep permanent adhesion Eliminates sag ging fuelcreep warping due mois ture makes hard-to-reach fillets easy cover use Monokote Solarfilm Coverite must use Balsarite takes gamble out covering iron-ons IRON-ON COVERING &L3j BALSA WOOD j ES IV E F USING WITH BALSARITE COVERITE 2779 Philmont Ave Huntingdcn Valley Pa machine original design through powerplant modification experience pertinent suggestions past have made current results possible CL Navy Carrier/Perry continued page 35 help participate year Ive asked Ted Kraver include rules questionnaire Hi Low Landing Carrier newsletter dont subscribe yet can get action sending five dollars Ted 1212 E Manhatton Dr Tempe AZ 85282 Send ques tionaires will see re sults get CLCR numerous proposals year three areas possible ma jor change subjects Profile Car rier engines bonus points scale-like models Profile Carrier event low-speed flight Profile Carrier engine proposal parallels similar proposals Slow Com bat Slow Rat Race purpose provide single set engine specifications three events help ensure ade quate supply engines available through normal retail outlets pro posals three major changes will probably voted separately would require engines produced least 1000 units Another would require crankcase crankshaft piston cylinder same manufacturer same engine design third change would delete plain-bearing require ment bonus point proposal would en courage use scale-like models Profile Carrier event bonus would small 10 points existing models will made obsolete yet should enough encourage building some scale-like models point award could changed next cycle after have some experience two types models competition scale re quirements quite liberal allow exist ing scale-like profile kits used permit simple installation of moveable surfaces commonly used Pro file Carrier models changes low-speed portion flights would two things would change penalty violations during low speed flight eliminate current conflicting rules say flight official after low-speed signal attempt violation dur ing low-speed flight Under proposed change low-speed violations would result loss low-speed score loss entire flight second change would delete current requirement model de viate radically flight characteris tics prototype substitute re quirement model exceed 600 nose-high attitude latter would provide uniformly enforceable definition Enforcement options include loss flight current penalty loss low-speed score intentional prolonged repeated deviations Another option five-point penalty time 600 limit exceeded would eliminate some judgment calls intentional uninten tional deviations failure correct imme diately would still mean loss flight low-speed score will require officials count deviations Summaries proposals results CLCB voting Competition Newsletter section past issues Richard L Perry S016 Angelita Ave Dayton 0H4S424 Ailerons/Bentson continued page 28 photographs Monterey illustrate simple modification can incorpo rated completed glider excessive work expense ailerons extend about two-thirds distance fuselage wing tips covering peeled back modifica tion made covering re-ironed back External aileron horns used avoid cutting fuselage open flew Monterey several times aileron installed good weather came before job finished aircraft rolled twice fast toward wing aileron Building scratch Id use slotted tubes engaged controls within fuselage im portant consideration model hits hard wings swing forward controls arent ripped out complete job coordinating controls producing realistic ap pearance flight reduce dihedral full-scale gliders may find will also have reduce verti cal tail area glider will tend drop its nose gain speed cir cling Spiral stability objective model will fly itself circling flight minimum attention Reducing fin rudder area may sound rash glider adequate aileron differential much dihedral requires compara tively little vertical tail surface Check relative rudder movement flying model toward away applying control roll first side other model should respond instantly roll too fast should product review product review product review Buzzbee Tachometer latest GloBee re lease small audio tachometer quickly accurately measures engine rpm match ing tones Simply listen engine turn control knob until its tone matches engines sound read rpm setting indi cated dial BuzzBee operates electronic tuning fork principle frequencies simulating engine speed sounds range 2600 35000 rpm Buzzbee effective measuring moving modelsairplanes heli copters boats carsas under re straint starting line unnecessary close whirling propellers en gine can heard rpm reading will de livered Buzzbee can duplicate engine speed settings superior trial runs tuning engine tachometer check compe titors engine rpm powered single NEDA 1604 Series 9-volt battery Inot includ ed Fusite Division 6000 Fernview Ave Cin cinnati OH 45212 product review product review product review 84 Model Aviation