Fancy Pants

WHEN FIRST SAW 1/32 plywood sheet hobby shop thought would make great structural material fuselage started thinking details involved shaping mak ing flat patterns figured too com plex scrapped idea Next no ticed articles building plywood tried first plywood plane article magazine found complete plywood fuselage light rigid However structures did hold up well hard landings would start splitting wing openings once small crack developed engine vibrations few hard landings did rest Also all-plywood fuselage caused peculiar shrill sound engine turning full bore observation experimented found plywood acting resonating chamber very little structure soak up vibration vibration characteristic causing servo failure first plywood job next thought incorporate enough balsa structure absorb vibration serve foundation plywood skin built number plywood planes improved structural design until arrived present configuration Fancy Pants named obvious rea sons sport aircraft can flown very little experience install 25 35 engine used 45 own ships design structurally quite strong undesirable vibration sound has reduced acceptable lim its Ive number severe landings concrete runways have overshot runway crashed truck sus tained relatively little damage fuse lage appearance plane arrived because myopic condition have lose visual perspective easily plane have exaggerated visual char acteristics canopy very large sprayed opaque blue inside Sig 16-in canopy landing gear wheel pants help tell plane right side up know sounds like funny reason design plane other fellows have built ship have told very easy follow sky will help inexperienced pilot during aero batics Construction Fuselage Since fuselage different will begin list materials will need 1 sheet 1/32 X 12 X 48 plywood sheet X 48 hard balsa crutch sides sheet 1/8 X 12-sq plywood formers wheel pants /s X 1 plywood hardwood motor mounts /8 X 3 X 36 balsa bottom front wing-tips /4 X 3 X 36 balsa bottom rear 2-sq X 4 balsa tail block construction fairly simple should pose no problems first sub assembly constructed engine mount tank arrangement Cut out trial fit formers engine mounts Now would good time check fit between fuel tank F3 have designed tight fit tank wont rotate under vibration used epoxy put parts together sub-assembly set ting up can cement fuselage doub lers sides Cement fuselage sides front assembly let dry Fuse lage former F4 can installed next X er block cemented tail fuselage sides pulled together cemented bottom fuselage sheets cross grain glued sanded flush sides forward fuselage planked /8 sheet Dont forget ood landing gear mounts shown side view rear lower fuselage aft wing planked t cross grain have never experienced building plywood fun now begins Make sure have handy four small Cclamps roll masking tape rubberbands always wrap plywood around crutch assembly first just familiarize myself procedure assembly easiest way attach ply skin follows A Soak outside plywood thoroughly hot water B Position plywood over side body wing seat crutch matches same cut-out plywood C Clamp plywood crutch wing seat Now wrap ply skin around structure see skin matches wing seat opening op posite side skin does match ex 38 Model Aviation N Lawrence Margolin FANCY IDA 1 Something pleasantly different four-channel sport modelfor 25 45 power 11-s actly loosen clamps shift skin around until skin symmetrically po sitioned crutch Once plywood positioned clamp skin onto crutch remaining side So much dry run Now follow same procedure time apply Titebond cement crutch points contact skin using masking tape pull skin bottom sides Rubberbands used tail end squeeze plywood tight around tail block Let entire assembly set up thor oughly remove clamps tape sand off overhanging plywood bottom sides can rounded off contour shown Position motor drill land ing gear mount pattern Install blind nuts point will likely surprised lightness rigidity smoothness fuselage now will also like work ing structure because requires no delicate handling fashioned hard wood block tail wheel epoxied May1977 39 Three steps making fuselage pre-kitted parts make evident pieces will go together Fuselage sub-assembly normal Finally well-soaked 1/32-in ply wrapped around held position clamps rubberbands masking tape resultant fuselage surprisingly light smooth very rigid hard motor mounts locked three ply formers inside ply shell front end stronger proverbial you-know-what go again what always say about shot Anyway can see external switch operation routings pushrods wings tail have sanded framework picture monocoque fuselage looks mighty sleek Though sturdy gear positioned well forward tracking excellent block wheel assembly onto body point Landing Gear After gear drilled formed position gear mounting blocks mark drill mounting holes used #6 X sheet-metal screws wheel pants made up soft balsa block thick core /t thick plywood inner wall thick balsa outer wall plywood sides wheel pants mount against aluminum leg found positioning wheel pants gear little tricky procedure follows Attach completed land ing gear wheels onto fuselage Let fuselage stand gear Posi tion wheel pants mark mount ing holes penciling through alumi num gear leg Drill holes install #4 blind nuts Attach wheel pant Now follow same procedure remain ing wheel pant using first wheel pant guide positioning second wheel pants slotted slide over axle disturbing wheels Wing wing construction fairly con ventional builders should able build wing plans will however give blow-by-blow description used spruce spars wing give lots strength add little weight should have good flat building board Lay plans out cover Saran Wrap assume ribs cut ready go construction starts laying down lower spars rear lower spar shimmed ribs W5 set up spars Ribs W3-B W4-B installed yet Add top spars Ribs W3-A W3-C W4-A W4-C installed dihedral braces glued Add ribs W3-B W4-B trailing edge notched out fitted ribs trailing edge shimmed d sq leading edge glued ribs held place masking tape until dry tips installed now upper low er spars brought together secured tips shown Next agenda plank lead ing trailing edges shown fill wing center section add cap strips opposite wing done same way except now completed wing po sitioned correct dihedral angle protruding dihedral braces built right remaining wing panel ailerons cut size shown attached three hinges panel Du-Bro aileron linkage installed before final assembly ailerons Stabilizer basic stabilizer built over plans cover stabilizer layout Saran Wrap Shim up leading trailing edges whatever have around glue ribs position two center ribs spaced apart insertion rudder using piece scrap sheet act spacing gauge fit will just right rudder Now plank entire stabilizer leave section between center ribs open rudder elevator made first cutting required length torsion bar bend piece 3/32 wire shape shown plan drill elevator epoxy wire place After epoxy set cut center section away hinge elevator stabilizer using four hinges Add tips shown plans rudder made k sheet Cut shape shown trial fit stabilizer Sand stabilizer sym metrical airfoil section Assembly Covering entire plane covered Super Monokote except landing gear wheel pants aluminum left natural wheel pants painted Make sure parts fit accuratelyie wing body stabilizer body used fiberglass resin fuelproof engine compartment used pushrods radio installa tion engine throttle linkage consists nylon devises rod straight through tank compartment engine servo tray mounted two sq beams positioned toward rear radio compartment allows room re ceiver batteries up front wing servo mounted deeply wing possible precludes possibility mechanical interference other servos tail wheel operated rudder small piece sheet metal bent U shape attached lower half rudder 4-40 screw nut control horns Carl Goldberg short horns linkage attached fur thest holes surface used nylon exits rudder stabilizer prevent binding maintain clean appear ance Total weight just under 5 pounds Flying Wing stabilizer incidence zero degrees Engine downthrust about 2 degrees Wait clear day too much cold wind Check radio mak ing sure once again up up down down left right left right Start engine sure see everything functions under vibration first thing check ground handling will superb judging experience Line up runway open throttle first test hop plane six inches off runway before realized what happened takeoff tre mendous smooth flat straight did nothing advance throttle plane did rest thought myself plane making look like ace Everything perfect didnt crank trims gained altitude just try plane loops rolls ship flew just great pattern ship load fun correc tion made adjust engine downthrust started adding first #6 washer under engine rear mount helped correct altitude gain full throttle did eliminate added another washer did trick did some slow passes over field plane handled smoothly appearance air good big canopy landing gear wheel pants made easy keep track sky Landings simple thick air foil holds plane solid floating landings suppose no reason being nervous first flight since third generation Fancy Pantsthey Continued page 100 40 Model Aviation Because Larry has visual restriction utilized conspicuous featuressuch big canopy bold landing gear model easy follow flight Sig canopy 16-in long sprayed opaque color inside Coveringexcept gear pantswas Super Monokote Custom Blended Bill Hager 5214 N Dixie Drive Dayton Ohio 45414 lage propeller nose block should given least three coats dope before assembling Ensure propeller blades properly balanced track properly Finished weight propeller assembly should exceed 24 grams Flight Preparation Make up least two /4 rubber motors 16 strands After washing drying lubing motors break initially using stationary stretch method hammer two large nails securely fence about six motor lengths apart motor stretched over nails left live minutes stretched motors should about 42 long Now assemble completed model insert rubber motor Check align ment wing wash-in incidence thrust correct Also verify CG loca tion prop blades folded Shift posi tion D-T timer necessary ensure CG located precisely shown plan Ready fly weight should equal less 222-gram total itemized plan modeler interested serious un limited rubber competition believe re liable sturdy winder winding stooge musts winding stooge custom de signed own car relatively easy build twin advantages im movable holder winding freedom test fly alone significant Flying Under calm conditions hand glide model add packing under sta bilizer leading trailing edge until GM Fuel Dayton Nationals model floats just slight left turn ship should very docile adjust under power Start about 200 turns model should climb right straighten out before prop folds glide left Use thrust adjust ments rudder tab stab tilt obtain pattern Proceed increments until full turns reached Under full power model should climb steep right corkscrew nose pointed up until just before prop folds Motor run should about minute advantages unlimited rubber class duration potential exceeds flight maximum unless down air encountered Unlike Wakefield therefore believe mandatory wind motor absolute capacity flight normally wind motors Big Boy between 700-750 turns depending feel rubber Maximum capacity contrast about 800 turns Sig FAI Model Supply rubber opin ion equivalent Pirelli Wake field events certainly adequate Big Boy Because its smooth texture also less liable nick break several occasions have used same motor three competitive flights unable build Big Boy down structural weight shown plan climb suffers accordingly suggest increase power 16 18 strands real joys un limited rubber event watch model climb great height may unless thermal assisted under powered Try unlimited rubberyoull like Fancy Pants/Margolin continued page 40 exhibited same smooth characteris tics Just sure ship balanced indicated plans little nose weight desirable can go heavier gauge aluminum landing gear plenty fuelproofing engine com partment usually will put balance ball park Lots fun building flying R ockette/J enki ns continued page 57 intended protect leading edge nicks dents Also gluing balsa leading edge gives chance straighten out warps have straight leading edge work sand shape leading edge before gluing framework gether keep putting stress 1/32 ribs Rockettes leading edge sanded sharper angle other air foils have seen seems give slight turbulator effect keep wing light 1/32 ribs used except three center ribs dihedral ribs 1/16 strength building block up trailing edge 1/32 50 will better follow line undercamber Glue ribs leading trailing edges insert top spars dry turn frame work over glue bottom spar may seem unusual bottom spar lie flat always have trouble getting tissue follow undercamber gives tissue surface ad make wing tip allow spars extend past last rib about /8 sand off angle capping wing tips light sheet 1/32 Sand airfoil shape finished tips before gluing dihedral joints because easier han dle tip itself dihedral joint made sanding ends center Tageriet Engines Similar familiar Jetex engines Japanese engines imported Canadian distributor Type equiva lent Jetex 50 Type B Jetex 150 Prices Type $650 Type B $850 Fuel 10 pellets Type $350 6 pellets Type B $350 Academy Products Ltd 51 Millwick Dr Weston Ont Canada 100 Model Aviation 5% nitro $650 gallon 10% nitro $725 gallon 15% nitro -$800 gallon 54 gallon drum 15% $21954 HARRYS HOBBIES WE SHIP FREE WITH 100 GALLON ORDER ooductreviewproduetreviewproduvtrviewproductreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS Send Complete Catalog 1525 E Warner Ave Santa Ana CA 92702 HOBBIES section ends tip mate evenlyeach sharing angle joint dihedral rib following angle used red tissue top wing stab black bot tom After years trying different colors decided best combination As plane drifts away timer becomes little speck sky black seems stay visible longer red easy spot grass wheat beans cotton except certain time year little yellow red blooms pop out stab easy build enough attention must paid selection wood construction produce warp-free structure cutting out spars leading edge trailing edge leave about I/s excess end finish tips like wing tips Glue frame work together dry sand tips angle cap 1/32 sheet Sand airfoil shape Cut three pieces cen ter-section planking 1/32 sheet piece should fit between leading edge first spar second piece tween first second spars third piece between second spar trailing edge three pieces should fit snugly between ribs Curve slightly match curve airfoil glue place strengthen leading edge split 3/32 dowel inset center leading edge being careful cut leading edge two dry sand shape leading edge Cover stab bend epoxy place 1/32 wire used lightweight A-grain sheet fuselage sides top bottom just enough formers keep sides square point B just behind pylon about inch half nose sufficient After cutting out fuselage sections according plans glue two side sections bottom formers place sure glue plywood motor mount inside bottom fuselage making long enough give ample room adjusting motor attain cor rect CG dry glue top fuselage place Allow dry glue nose block place sand shape after glue has set shape Rock ettes nose departure current trend rockets cut nose off just ahead motor believe long er nose adds aerodynamic efficiency design produces stable glide Next sand body smooth glue pylons place being sure right slightly taller left give wing built-in tilt left glide Check plans details Cut 3/32 dowels length Wrap dowel piece fine sandpaper gently sand top pylon shapes top pylon curvature dowel Glue dowels place Next glue power source youll need years glow plug lights new GloBee Fire Plug GloBee Fire Plug igniterits completely inte grated glow plug starting system Its easy-to-operate rheostat con trol lever provides optimum current match weather stab rest place Shaping rudder form DT stop old effective trick elimi nate use DT wire Quarter-grain used keep rudder warping having use stiffner piece Cut rudder shape glue position dry glue er re inforcements also provide surface stab rest against Now 1/4 aluminum tube DT fuse can glued place 3/32 wire block added Install 1/32 plywood motor mount again leaving long enough adjust motor CG /4 soldering lug bent glued body ahead conditions fuels exact ignition specifications particular glow plug Its easy-toread 0-10 amp ammeter shows precise power output will tell glance plug good engine flooded self-contained 2 volt battery may recharged over 150 times has fully charged rating 5 ampere hours peak power 200 watts circuitry safety fused 2 diameter highimpact polypropylene case has fluted base convenient han dling have add lead wires plug donnector choice color-coded labeled terminals motor mount provide base wire tether required AMA Should used times keep motor hanging around Finish model two coats 50-50 dope keep light Use Jetex 150 mo tor attain CG rubberband motor clip empty motor onto body Slide motor back forth until model balances Mark pen Test glide model make sure glide smooth stable Adjust motor un til satisfied glide mount motor clip final word about Natsif serious about winning dont let size meet overwhelm Just think May1977 101 Fire Plug. optimum starting power need 6 Buy GloBee Fire Plug hobby dealer today. enjoy years fast reliable engine starts perfectly matched special requirements DIVISION OF EMERSON ELECTRIC CO 6000 Fernview Avg Cincinnati Ohio 45212 small meet lot people patience skill catching thermals little old-fashioned luck could win first place Nationals Yen Fly/Hannan continued page 59 building hand-launched model Cut additional short piece stock nose piece shown glue time Bend rear rubber hook thin music wire force rear fuse lage stick secure film model airplane cement epoxy White glue Titebond seem adhere well wire Decor The decorations add charm aircraft may applied ei ther two ways Fastest probably neatest unless have un usually steady hand simply draw brown black fiber-point pen second difficult meth od cut markings colored tis sue paper good approach to trace characters onto thin paper tape over colored tissue turn taped sheet cardboard sharp-pointed modeling knife used carefully cut through tracing paper colored tissue just slightly cardboard beneath results should clean neat tissue edges Note both YEN signs may cut once using two layers tissue Apply characters clear dope Assaubly Glue wing onto fuselage stick being certain properly aligned Add vertical fin centering assembly viewed top should also vertical seen front model Balancing aircraft somewhat dif ferent usual Slip North Pacific Skeeter propeller bearing assembly onto front fuselage stick will course loose fit stage model should balance near point indi cated plans Probably however will slightly nose-heavy cut small amount off front fuselage stick replace prop assembly bal ance again Repeat until model will hang level supported finger-tips side balance point Now glue lower nose piece bevel top fuselage stick obtain downthrust angle Reinstall propeller assembly Flying Install short loop 3/32 la rubber try few test glides may performed indoors have enough room space outside calm conditions craft should have long straight glide model dives trim tiny bit off front fuselage stick try again stalls small amount clay ballast may added fuse lage front Now wind about 75 100 turns rubber motor launch gently model turns excessively may correct ed bending paper rudder opposite direction turn extreme cases tiny amount clay ballast may need added wing tip opposite di rection turn Gradually increase number motor winds until model can safely handle full row knots An increase power may however bring about need slight changes balance turn adjustments Next longer lubed rubber motor may installed winder wound best performance may wish experiment different sizes loop lengths model loops under high power slightly crease downthrust angle Optional This craft may easily equipped landing gear will permit rise-off-ground starts some decrease overall performance com plete landing gear assembly North Pacific Sleek Streek may installed forcing Skeeter prop bearing assembly landing gear wire held po sition fuselage stick Alternatively could bend own wire gear legs add small-diameter balsa light weight plastic wheels Naturally fuse lage stick will need shortened lower nose piece reinstalled restore correct balance model change landing gear resulted need 102 Model Aviation MODEL AND CRAFT SHOW RADIO CONTROL PLANES COPTERS S U-CONTROL * FREE FLIGHT INDOOR-OUTDOOR DEMONSTRATIONS GIANT STATIC DISPLAY CONTEST public ver 200 Awardsi IA AC ANNUAL 2 DAYS ONLY RDAY & SUNDAY MAY7 MAY8 10 AM -8 PMj 11 AM -6 PM SEE IT ALL OVER 250 EXHIBITORS 0 SQ FT LA NONSELLING SHOW CONVENTION CENTER ANAHEIM CALIFORNIA

WHEN FIRST SAW 1/32 plywood sheet hobby shop thought would make great structural material fuselage started thinking details involved shaping mak ing flat patterns figured too com plex scrapped idea Next no ticed articles building plywood tried first plywood plane article magazine found complete plywood fuselage light rigid However structures did hold up well hard landings would start splitting wing openings once small crack developed engine vibrations few hard landings did rest Also all-plywood fuselage caused peculiar shrill sound engine turning full bore observation experimented found plywood acting resonating chamber very little structure soak up vibration vibration characteristic causing servo failure first plywood job next thought incorporate enough balsa structure absorb vibration serve foundation plywood skin built number plywood planes improved structural design until arrived present configuration Fancy Pants named obvious rea sons sport aircraft can flown very little experience install 25 35 engine used 45 own ships design structurally quite strong undesirable vibration sound has reduced acceptable lim its Ive number severe landings concrete runways have overshot runway crashed truck sus tained relatively little damage fuse lage appearance plane arrived because myopic condition have lose visual perspective easily plane have exaggerated visual char acteristics canopy very large sprayed opaque blue inside Sig 16-in canopy landing gear wheel pants help tell plane right side up know sounds like funny reason design plane other fellows have built ship have told very easy follow sky will help inexperienced pilot during aero batics Construction Fuselage Since fuselage different will begin list materials will need 1 sheet 1/32 X 12 X 48 plywood sheet X 48 hard balsa crutch sides sheet 1/8 X 12-sq plywood formers wheel pants /s X 1 plywood hardwood motor mounts /8 X 3 X 36 balsa bottom front wing-tips /4 X 3 X 36 balsa bottom rear 2-sq X 4 balsa tail block construction fairly simple should pose no problems first sub assembly constructed engine mount tank arrangement Cut out trial fit formers engine mounts Now would good time check fit between fuel tank F3 have designed tight fit tank wont rotate under vibration used epoxy put parts together sub-assembly set ting up can cement fuselage doub lers sides Cement fuselage sides front assembly let dry Fuse lage former F4 can installed next X er block cemented tail fuselage sides pulled together cemented bottom fuselage sheets cross grain glued sanded flush sides forward fuselage planked /8 sheet Dont forget ood landing gear mounts shown side view rear lower fuselage aft wing planked t cross grain have never experienced building plywood fun now begins Make sure have handy four small Cclamps roll masking tape rubberbands always wrap plywood around crutch assembly first just familiarize myself procedure assembly easiest way attach ply skin follows A Soak outside plywood thoroughly hot water B Position plywood over side body wing seat crutch matches same cut-out plywood C Clamp plywood crutch wing seat Now wrap ply skin around structure see skin matches wing seat opening op posite side skin does match ex 38 Model Aviation N Lawrence Margolin FANCY IDA 1 Something pleasantly different four-channel sport modelfor 25 45 power 11-s actly loosen clamps shift skin around until skin symmetrically po sitioned crutch Once plywood positioned clamp skin onto crutch remaining side So much dry run Now follow same procedure time apply Titebond cement crutch points contact skin using masking tape pull skin bottom sides Rubberbands used tail end squeeze plywood tight around tail block Let entire assembly set up thor oughly remove clamps tape sand off overhanging plywood bottom sides can rounded off contour shown Position motor drill land ing gear mount pattern Install blind nuts point will likely surprised lightness rigidity smoothness fuselage now will also like work ing structure because requires no delicate handling fashioned hard wood block tail wheel epoxied May1977 39 Three steps making fuselage pre-kitted parts make evident pieces will go together Fuselage sub-assembly normal Finally well-soaked 1/32-in ply wrapped around held position clamps rubberbands masking tape resultant fuselage surprisingly light smooth very rigid hard motor mounts locked three ply formers inside ply shell front end stronger proverbial you-know-what go again what always say about shot Anyway can see external switch operation routings pushrods wings tail have sanded framework picture monocoque fuselage looks mighty sleek Though sturdy gear positioned well forward tracking excellent block wheel assembly onto body point Landing Gear After gear drilled formed position gear mounting blocks mark drill mounting holes used #6 X sheet-metal screws wheel pants made up soft balsa block thick core /t thick plywood inner wall thick balsa outer wall plywood sides wheel pants mount against aluminum leg found positioning wheel pants gear little tricky procedure follows Attach completed land ing gear wheels onto fuselage Let fuselage stand gear Posi tion wheel pants mark mount ing holes penciling through alumi num gear leg Drill holes install #4 blind nuts Attach wheel pant Now follow same procedure remain ing wheel pant using first wheel pant guide positioning second wheel pants slotted slide over axle disturbing wheels Wing wing construction fairly con ventional builders should able build wing plans will however give blow-by-blow description used spruce spars wing give lots strength add little weight should have good flat building board Lay plans out cover Saran Wrap assume ribs cut ready go construction starts laying down lower spars rear lower spar shimmed ribs W5 set up spars Ribs W3-B W4-B installed yet Add top spars Ribs W3-A W3-C W4-A W4-C installed dihedral braces glued Add ribs W3-B W4-B trailing edge notched out fitted ribs trailing edge shimmed d sq leading edge glued ribs held place masking tape until dry tips installed now upper low er spars brought together secured tips shown Next agenda plank lead ing trailing edges shown fill wing center section add cap strips opposite wing done same way except now completed wing po sitioned correct dihedral angle protruding dihedral braces built right remaining wing panel ailerons cut size shown attached three hinges panel Du-Bro aileron linkage installed before final assembly ailerons Stabilizer basic stabilizer built over plans cover stabilizer layout Saran Wrap Shim up leading trailing edges whatever have around glue ribs position two center ribs spaced apart insertion rudder using piece scrap sheet act spacing gauge fit will just right rudder Now plank entire stabilizer leave section between center ribs open rudder elevator made first cutting required length torsion bar bend piece 3/32 wire shape shown plan drill elevator epoxy wire place After epoxy set cut center section away hinge elevator stabilizer using four hinges Add tips shown plans rudder made k sheet Cut shape shown trial fit stabilizer Sand stabilizer sym metrical airfoil section Assembly Covering entire plane covered Super Monokote except landing gear wheel pants aluminum left natural wheel pants painted Make sure parts fit accuratelyie wing body stabilizer body used fiberglass resin fuelproof engine compartment used pushrods radio installa tion engine throttle linkage consists nylon devises rod straight through tank compartment engine servo tray mounted two sq beams positioned toward rear radio compartment allows room re ceiver batteries up front wing servo mounted deeply wing possible precludes possibility mechanical interference other servos tail wheel operated rudder small piece sheet metal bent U shape attached lower half rudder 4-40 screw nut control horns Carl Goldberg short horns linkage attached fur thest holes surface used nylon exits rudder stabilizer prevent binding maintain clean appear ance Total weight just under 5 pounds Flying Wing stabilizer incidence zero degrees Engine downthrust about 2 degrees Wait clear day too much cold wind Check radio mak ing sure once again up up down down left right left right Start engine sure see everything functions under vibration first thing check ground handling will superb judging experience Line up runway open throttle first test hop plane six inches off runway before realized what happened takeoff tre mendous smooth flat straight did nothing advance throttle plane did rest thought myself plane making look like ace Everything perfect didnt crank trims gained altitude just try plane loops rolls ship flew just great pattern ship load fun correc tion made adjust engine downthrust started adding first #6 washer under engine rear mount helped correct altitude gain full throttle did eliminate added another washer did trick did some slow passes over field plane handled smoothly appearance air good big canopy landing gear wheel pants made easy keep track sky Landings simple thick air foil holds plane solid floating landings suppose no reason being nervous first flight since third generation Fancy Pantsthey Continued page 100 40 Model Aviation Because Larry has visual restriction utilized conspicuous featuressuch big canopy bold landing gear model easy follow flight Sig canopy 16-in long sprayed opaque color inside Coveringexcept gear pantswas Super Monokote Custom Blended Bill Hager 5214 N Dixie Drive Dayton Ohio 45414 lage propeller nose block should given least three coats dope before assembling Ensure propeller blades properly balanced track properly Finished weight propeller assembly should exceed 24 grams Flight Preparation Make up least two /4 rubber motors 16 strands After washing drying lubing motors break initially using stationary stretch method hammer two large nails securely fence about six motor lengths apart motor stretched over nails left live minutes stretched motors should about 42 long Now assemble completed model insert rubber motor Check align ment wing wash-in incidence thrust correct Also verify CG loca tion prop blades folded Shift posi tion D-T timer necessary ensure CG located precisely shown plan Ready fly weight should equal less 222-gram total itemized plan modeler interested serious un limited rubber competition believe re liable sturdy winder winding stooge musts winding stooge custom de signed own car relatively easy build twin advantages im movable holder winding freedom test fly alone significant Flying Under calm conditions hand glide model add packing under sta bilizer leading trailing edge until GM Fuel Dayton Nationals model floats just slight left turn ship should very docile adjust under power Start about 200 turns model should climb right straighten out before prop folds glide left Use thrust adjust ments rudder tab stab tilt obtain pattern Proceed increments until full turns reached Under full power model should climb steep right corkscrew nose pointed up until just before prop folds Motor run should about minute advantages unlimited rubber class duration potential exceeds flight maximum unless down air encountered Unlike Wakefield therefore believe mandatory wind motor absolute capacity flight normally wind motors Big Boy between 700-750 turns depending feel rubber Maximum capacity contrast about 800 turns Sig FAI Model Supply rubber opin ion equivalent Pirelli Wake field events certainly adequate Big Boy Because its smooth texture also less liable nick break several occasions have used same motor three competitive flights unable build Big Boy down structural weight shown plan climb suffers accordingly suggest increase power 16 18 strands real joys un limited rubber event watch model climb great height may unless thermal assisted under powered Try unlimited rubberyoull like Fancy Pants/Margolin continued page 40 exhibited same smooth characteris tics Just sure ship balanced indicated plans little nose weight desirable can go heavier gauge aluminum landing gear plenty fuelproofing engine com partment usually will put balance ball park Lots fun building flying R ockette/J enki ns continued page 57 intended protect leading edge nicks dents Also gluing balsa leading edge gives chance straighten out warps have straight leading edge work sand shape leading edge before gluing framework gether keep putting stress 1/32 ribs Rockettes leading edge sanded sharper angle other air foils have seen seems give slight turbulator effect keep wing light 1/32 ribs used except three center ribs dihedral ribs 1/16 strength building block up trailing edge 1/32 50 will better follow line undercamber Glue ribs leading trailing edges insert top spars dry turn frame work over glue bottom spar may seem unusual bottom spar lie flat always have trouble getting tissue follow undercamber gives tissue surface ad make wing tip allow spars extend past last rib about /8 sand off angle capping wing tips light sheet 1/32 Sand airfoil shape finished tips before gluing dihedral joints because easier han dle tip itself dihedral joint made sanding ends center Tageriet Engines Similar familiar Jetex engines Japanese engines imported Canadian distributor Type equiva lent Jetex 50 Type B Jetex 150 Prices Type $650 Type B $850 Fuel 10 pellets Type $350 6 pellets Type B $350 Academy Products Ltd 51 Millwick Dr Weston Ont Canada 100 Model Aviation 5% nitro $650 gallon 10% nitro $725 gallon 15% nitro -$800 gallon 54 gallon drum 15% $21954 HARRYS HOBBIES WE SHIP FREE WITH 100 GALLON ORDER ooductreviewproduetreviewproduvtrviewproductreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS Send Complete Catalog 1525 E Warner Ave Santa Ana CA 92702 HOBBIES section ends tip mate evenlyeach sharing angle joint dihedral rib following angle used red tissue top wing stab black bot tom After years trying different colors decided best combination As plane drifts away timer becomes little speck sky black seems stay visible longer red easy spot grass wheat beans cotton except certain time year little yellow red blooms pop out stab easy build enough attention must paid selection wood construction produce warp-free structure cutting out spars leading edge trailing edge leave about I/s excess end finish tips like wing tips Glue frame work together dry sand tips angle cap 1/32 sheet Sand airfoil shape Cut three pieces cen ter-section planking 1/32 sheet piece should fit between leading edge first spar second piece tween first second spars third piece between second spar trailing edge three pieces should fit snugly between ribs Curve slightly match curve airfoil glue place strengthen leading edge split 3/32 dowel inset center leading edge being careful cut leading edge two dry sand shape leading edge Cover stab bend epoxy place 1/32 wire used lightweight A-grain sheet fuselage sides top bottom just enough formers keep sides square point B just behind pylon about inch half nose sufficient After cutting out fuselage sections according plans glue two side sections bottom formers place sure glue plywood motor mount inside bottom fuselage making long enough give ample room adjusting motor attain cor rect CG dry glue top fuselage place Allow dry glue nose block place sand shape after glue has set shape Rock ettes nose departure current trend rockets cut nose off just ahead motor believe long er nose adds aerodynamic efficiency design produces stable glide Next sand body smooth glue pylons place being sure right slightly taller left give wing built-in tilt left glide Check plans details Cut 3/32 dowels length Wrap dowel piece fine sandpaper gently sand top pylon shapes top pylon curvature dowel Glue dowels place Next glue power source youll need years glow plug lights new GloBee Fire Plug GloBee Fire Plug igniterits completely inte grated glow plug starting system Its easy-to-operate rheostat con trol lever provides optimum current match weather stab rest place Shaping rudder form DT stop old effective trick elimi nate use DT wire Quarter-grain used keep rudder warping having use stiffner piece Cut rudder shape glue position dry glue er re inforcements also provide surface stab rest against Now 1/4 aluminum tube DT fuse can glued place 3/32 wire block added Install 1/32 plywood motor mount again leaving long enough adjust motor CG /4 soldering lug bent glued body ahead conditions fuels exact ignition specifications particular glow plug Its easy-toread 0-10 amp ammeter shows precise power output will tell glance plug good engine flooded self-contained 2 volt battery may recharged over 150 times has fully charged rating 5 ampere hours peak power 200 watts circuitry safety fused 2 diameter highimpact polypropylene case has fluted base convenient han dling have add lead wires plug donnector choice color-coded labeled terminals motor mount provide base wire tether required AMA Should used times keep motor hanging around Finish model two coats 50-50 dope keep light Use Jetex 150 mo tor attain CG rubberband motor clip empty motor onto body Slide motor back forth until model balances Mark pen Test glide model make sure glide smooth stable Adjust motor un til satisfied glide mount motor clip final word about Natsif serious about winning dont let size meet overwhelm Just think May1977 101 Fire Plug. optimum starting power need 6 Buy GloBee Fire Plug hobby dealer today. enjoy years fast reliable engine starts perfectly matched special requirements DIVISION OF EMERSON ELECTRIC CO 6000 Fernview Avg Cincinnati Ohio 45212 small meet lot people patience skill catching thermals little old-fashioned luck could win first place Nationals Yen Fly/Hannan continued page 59 building hand-launched model Cut additional short piece stock nose piece shown glue time Bend rear rubber hook thin music wire force rear fuse lage stick secure film model airplane cement epoxy White glue Titebond seem adhere well wire Decor The decorations add charm aircraft may applied ei ther two ways Fastest probably neatest unless have un usually steady hand simply draw brown black fiber-point pen second difficult meth od cut markings colored tis sue paper good approach to trace characters onto thin paper tape over colored tissue turn taped sheet cardboard sharp-pointed modeling knife used carefully cut through tracing paper colored tissue just slightly cardboard beneath results should clean neat tissue edges Note both YEN signs may cut once using two layers tissue Apply characters clear dope Assaubly Glue wing onto fuselage stick being certain properly aligned Add vertical fin centering assembly viewed top should also vertical seen front model Balancing aircraft somewhat dif ferent usual Slip North Pacific Skeeter propeller bearing assembly onto front fuselage stick will course loose fit stage model should balance near point indi cated plans Probably however will slightly nose-heavy cut small amount off front fuselage stick replace prop assembly bal ance again Repeat until model will hang level supported finger-tips side balance point Now glue lower nose piece bevel top fuselage stick obtain downthrust angle Reinstall propeller assembly Flying Install short loop 3/32 la rubber try few test glides may performed indoors have enough room space outside calm conditions craft should have long straight glide model dives trim tiny bit off front fuselage stick try again stalls small amount clay ballast may added fuse lage front Now wind about 75 100 turns rubber motor launch gently model turns excessively may correct ed bending paper rudder opposite direction turn extreme cases tiny amount clay ballast may need added wing tip opposite di rection turn Gradually increase number motor winds until model can safely handle full row knots An increase power may however bring about need slight changes balance turn adjustments Next longer lubed rubber motor may installed winder wound best performance may wish experiment different sizes loop lengths model loops under high power slightly crease downthrust angle Optional This craft may easily equipped landing gear will permit rise-off-ground starts some decrease overall performance com plete landing gear assembly North Pacific Sleek Streek may installed forcing Skeeter prop bearing assembly landing gear wire held po sition fuselage stick Alternatively could bend own wire gear legs add small-diameter balsa light weight plastic wheels Naturally fuse lage stick will need shortened lower nose piece reinstalled restore correct balance model change landing gear resulted need 102 Model Aviation MODEL AND CRAFT SHOW RADIO CONTROL PLANES COPTERS S U-CONTROL * FREE FLIGHT INDOOR-OUTDOOR DEMONSTRATIONS GIANT STATIC DISPLAY CONTEST public ver 200 Awardsi IA AC ANNUAL 2 DAYS ONLY RDAY & SUNDAY MAY7 MAY8 10 AM -8 PMj 11 AM -6 PM SEE IT ALL OVER 250 EXHIBITORS 0 SQ FT LA NONSELLING SHOW CONVENTION CENTER ANAHEIM CALIFORNIA