NO OCR TEXT Spinner author describes sneaky fake realistically simulates flight helicopter article contains innovations tips sure read before start Lee Spector YOU HOLD little plane hand wind rubber rotor spins like mad wind kids gather ing crowd cry Hey helicopter Does really fly As let go everyones eyes open see really does quite well too moves out climbing tree heigbt turns downwind flies level turns wind again hovers second power off slowly settles graceful landing Although likes land its wheels rotor spinning kids love too much resist gently catching it floats down Its delightful what Well its helicopter strict sense common usage ex tent helice-ptera means spinning wing Greek its got though has rotor spins freely wind its technically autogyro since thats Juan de Ciervas tradename com panys aircraft relied flapping articulated blades horizontal stabil izer doesnt have Spinner fact simple fake realistically simulates flight heli copter using number sneaky tricks create illusion miniature freeflying chopper originally designed mass-market flying toy molded foam nose inclined upward about 15 degrees rotor spinning up speed launch re leasing prop first plane able play sorts games airfoil tip design thick light blades make gyro work others failed response Dick Sarpolus urging stormed brain came up balsa version direct spin-off Conventional autogyros stable very narrow speed range due ad vancing blade having greater airspeed hence lift retreating blade center lift thus moved laterally advancing side rotor disc trying roll plane its longitudinal axis flapping blade teetering rotor normal ly used attempt compensate somewhat limited success Having build system small free-flight plane hard enough also diffi culty using fixed horizontal stabilizer changes effectiveness different model speeds compounding stability problem February 1977 49 Blade angles show clearly picture Th prop bearing North Pacifics Skeeter wheels rubber Sleek Streak Chordwise strips rotor tips serve vortex generators Profile shape can altered de sired provided arrangement kept same continued page 94 FREE SAMPLE Pin Clamps Try em youll want Send ad selfaddressed stamped envelope ROCKET CITY SPECIALTIES 103 Wholesale Ave NE Huntsville Ala 35811 MA Que dCoupecontinued brazed threaded end prevent hook pulling out drill chuck Most drills have approximately 4-to-i gear ratios Determine what yours can convert winder handle turns motor turns plan graduate Wakefield and/or Unlimited buy ready made winder make heavy-duty hand drill Attach D-type handle remove chuck install permanent winding hook Que dCoupe flies right power right glide Prepare flight double checking surfaces alignment Rudder should 1/16 right Wing tab should down 1/16 Tips washed out 1/16 Stab should titled right side high CU thrust line shown plans slack out motor prop blades held folded position rubberband test glide shimming stab until smooth floating glide slight right turn obtained Put 100 hand turns motor launch right wind nose up slightly Observe carefully right moderate climbing turn indicates well looking dangerous traits time As long model does spiral dive right continue add power using winder ship spiral dives re duce right thrust increase wing tab down adjustment As increase power full winds cor rect climb turn angle thrust adjustments small sanding block flight kit handy Keep right wing up tab Adjust glide turn stab tilt glide angle slight CU shifts may fine tune flight trim small rudder tab stabilizer incidence adjustments Change motors other flight practicing flight competition Spinner/Spector continued page 49 Spinners design does away fin ickiness trying get gyro fly variety speeds simple expedient flying speed hows cheap trick uses four systematically related main functional design elements achieve provide stability speed 1 Constant speed rotor 2 Balance forces singular flight speed 3 Pendulum stability 4 Light weight controlled amount induced drag makes almost constant-speed rotor provides lift/drag vector tends stay put can balanced proper alignment prop thrust center gravity slipstream/rotor stream interaction rudder thrust Perturbations flying attitude quickly damped pendu lum action landing gear heavier plane less stable due inertial effects momentary gain/loss airspeed up/downwind turns launches too fast slow will fly much weight launch speed comes highly critical wind will upset Try yourself like add ing weight just rearward CU generate higher angle attack lift watch interesting variety crashes plane destabilizes what starts out smooth flight Construction will find model very quick make few procedures slightly differ ent convention should followed else wont work right balsa version uses North Pacifics 4-dia Skeeter prop bearing equivalent size same no heavier can com pensated bending landing gear aft wheels rubber Sleek Streak equivalent note rubber size fairly critical Select very light straight sheets 1/16 1/32 balsa no denser Skeeters wings used contest grade 1/32 blades soft rigid turned out slightly thicker 1/32 1/20 perfect cant get light wood youd best forget whole thing make plastic model instead can use Sleek Streak landing gear simply bend wheels forward out youll need 1/32 wire rotor shaft might well use make longer landing gear Fly kinds weather experiment rubber Try 3/16 8-strand motors etc Try put Coupe thermal max have some good articles thermals lately Check some RC glider columns Get rubber technique down pat start looking good Wakefield design its much stable Just follow bends original extend legs rotor-shaft bearing must metal nylon else will quickly wear out allow rotor disc tilt out specs indicated CG produces nice climb either real steep climb flat penetration use rearward forward CU building rotor mast respectively forward rearward aw fuselage fuselage mostly cosmetic can vary greatly shape provided same thrust rotor position CU used Build own favorite design uses parameters resulting about 30 hours flight testing fol lowing closely should definitely put ballpark Make rotor first Cut out blades glue together water-based glue wetting out side joint water Holding joint close heat source such heat gun twist negative pitch dihedral blades remember unpowered blades screw downward just glider points down rising thermal Use jig plans get angles exact sure blades straight along diameter sight along re spective leading edges opposite tips Balsarite crystal clear liquid makes balsawood watertight times Monokote sags comes unglued its cause balsa drying out contracting pulling away Monokote Balsarite helps eliminate problem performs same Solarfilm nearly oth er covering makes iron-ons stick bet ter due deep wood penetration Coverite 2779 Philmont Ave Huntingdon Valley Pennsylvania 19006 p roduotviewp rod uctevgewprod uctrviewprod u Ctre o ie W 94 Model Aviation p oduoteviewp rod ootevewprod uct ,viewp rod octreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS C end catalog complete 525 E Warner Ave ama Ana CA 92702 HOBBIES Keep joint hot keep checking until dries correct angles Cut glue vortex generators bottom tips using minimum glue tips must light use minimal decorations must sand rotor Square edges required rough surface actually helps Make rotor shaft bearing Bal ance inverted rotor pin push through use very small amount quick epoxy install bearing Before gets rock hard spin rotor its shaft check bearing exactly cen tered both blades same pitch dihe dral reinforce top bottom joint epoxy feathering out end blade hub taper epoxy isnt faired ends abruptly potential stress line created blade will break hits make fuselage cut out pieces glue rudder body bot tom doublers both sides Bend proper angles rotor shaft score rotor mast doubler accept epoxy right side body Double check correct angles Notch nose prop bearing Epoxy rubber hook sufficiently far back hold new rubber snug Decorate body sparingly felt marker trim Monokote etc Dont dope keep light will fly better wont break hits things Trimming Flying Make sure rotor bearing abso lutely free whip plane around pinwheel fashion until critical item sufficiently loose rotor tip can wobble about 1/16 up down care ful use oil will congeal cold weather slightly tight bearing evidenced spiral right glide Test glide indoors spinning rotor running fuselage nose-up ver tical rotor rear rotor maximum speed release smoothly nose forward body parallel ground glide path should 450 Bend landing gear forward back flatten steepen glide respectively turns consistently right left respec tively decrease increase rotor pitch example increasing negative pitch decreases lift vector left advancing side disc makes plane tilt left Avoid changing shaft angles feel must remember tilting rotor forward respect body also tilting body up forward respect rotor moves CG forward tilts rotor forward respect ground down elevator etc Once glide good calm day wind about ten knots launch glide rotor whizzing like mad Use two hands first release prop before plane make sure nose WE REALLY MOVE OUR TAIL FOR YOU say youve latest Hell say flies like charm say its down need new part uve looked high & low cant find whats bothering buddy Call us today part need way Youll back air record time stock parts popu lar radio controlled helicopters almost nobody else country does So somethings bothering call us ally move tail . have thing need inclined about 150 above intended flight path Trim glide note CG moves aft rotor tilts back lift increases right turn develops Use left rudder correct want under no condition allow left turn under power Use right prop thrust cor rect slow roll leftin addition flattening pitch much stall blades slow rotorand consider using less power terms smaller rubber flatter pitch prop bend steam kettle less turns Gradu ally increase power learn con trol launch Try different adjustments CG bending landing gear try different flight patterns stance gear removed 85 glide path provides 12 right circle will take around living room several times right number turns Dont fly about 5-10mph wind case simply release plane running throwing else airspeed will too great After bit practice can throw plane up launch crosswind etc ROG get rotor spinning itself wind let go off car top isnt spinning fast wont fly Windless indoor ROGs possible can get rotor going fast enough doubly disengaging rubberband suitably hooked wound around hub stretched rudder can also used ground spin up rotor twirls releases hub shoots rearward off rudder simple spin-up device hand launches -dia knurled balsa foam ring extending about w hub index finger strikes rear ward right side Let us know succeeds either doing loops ex ceeding 1 mm thermal OK Have fun RC Helicopters/Schoonard continued page 20 fly bar outward quarter inch time lengthen pushrods mixers time adjustment made dont will change pitch setting rotor blades adjusting helped very little quicken cyclic control next thing remove mixers collective slider remove balls lay out hole spacing additional #32 hole can drilled between two exist ing holes sure laid out holes line equally spaced Re-install balls nuts blue Lock-Tite replace slider block After pushrods replaced everything checked out flew again Super-Baby its good thing have dual rate cyclic because now cyclic control burn move 553 blocks back normal set ting now set half inches rotor hub measure ments inside measurements balls facing inward has also flown cans increases cyclic re sponse Excessive Rotor Tilt rotor head free tilt limit mechanical stops helicopter tends act pen dulum reaction can very irritating especially during fast takeoffs stops seemed rigid system would desirable simple solution cover stops /4 inch ID surgical tubing piece installed stop helicopter reflown improve ment obvious some tilt still re mained An additional piece surgical tubing forced over first February 1977 95 tie ftModel Helicopters Division SC MODELER HOBBY SHOP Helm Planes Cars Boats Radios Parts RC Hobbiests 1999 Larkin Avenue Elgin Illinois 50120 Dept 114312 697-3737
Edition: Model Aviation - 1977/02
Page Numbers: 48, 49, 94, 95
NO OCR TEXT Spinner author describes sneaky fake realistically simulates flight helicopter article contains innovations tips sure read before start Lee Spector YOU HOLD little plane hand wind rubber rotor spins like mad wind kids gather ing crowd cry Hey helicopter Does really fly As let go everyones eyes open see really does quite well too moves out climbing tree heigbt turns downwind flies level turns wind again hovers second power off slowly settles graceful landing Although likes land its wheels rotor spinning kids love too much resist gently catching it floats down Its delightful what Well its helicopter strict sense common usage ex tent helice-ptera means spinning wing Greek its got though has rotor spins freely wind its technically autogyro since thats Juan de Ciervas tradename com panys aircraft relied flapping articulated blades horizontal stabil izer doesnt have Spinner fact simple fake realistically simulates flight heli copter using number sneaky tricks create illusion miniature freeflying chopper originally designed mass-market flying toy molded foam nose inclined upward about 15 degrees rotor spinning up speed launch re leasing prop first plane able play sorts games airfoil tip design thick light blades make gyro work others failed response Dick Sarpolus urging stormed brain came up balsa version direct spin-off Conventional autogyros stable very narrow speed range due ad vancing blade having greater airspeed hence lift retreating blade center lift thus moved laterally advancing side rotor disc trying roll plane its longitudinal axis flapping blade teetering rotor normal ly used attempt compensate somewhat limited success Having build system small free-flight plane hard enough also diffi culty using fixed horizontal stabilizer changes effectiveness different model speeds compounding stability problem February 1977 49 Blade angles show clearly picture Th prop bearing North Pacifics Skeeter wheels rubber Sleek Streak Chordwise strips rotor tips serve vortex generators Profile shape can altered de sired provided arrangement kept same continued page 94 FREE SAMPLE Pin Clamps Try em youll want Send ad selfaddressed stamped envelope ROCKET CITY SPECIALTIES 103 Wholesale Ave NE Huntsville Ala 35811 MA Que dCoupecontinued brazed threaded end prevent hook pulling out drill chuck Most drills have approximately 4-to-i gear ratios Determine what yours can convert winder handle turns motor turns plan graduate Wakefield and/or Unlimited buy ready made winder make heavy-duty hand drill Attach D-type handle remove chuck install permanent winding hook Que dCoupe flies right power right glide Prepare flight double checking surfaces alignment Rudder should 1/16 right Wing tab should down 1/16 Tips washed out 1/16 Stab should titled right side high CU thrust line shown plans slack out motor prop blades held folded position rubberband test glide shimming stab until smooth floating glide slight right turn obtained Put 100 hand turns motor launch right wind nose up slightly Observe carefully right moderate climbing turn indicates well looking dangerous traits time As long model does spiral dive right continue add power using winder ship spiral dives re duce right thrust increase wing tab down adjustment As increase power full winds cor rect climb turn angle thrust adjustments small sanding block flight kit handy Keep right wing up tab Adjust glide turn stab tilt glide angle slight CU shifts may fine tune flight trim small rudder tab stabilizer incidence adjustments Change motors other flight practicing flight competition Spinner/Spector continued page 49 Spinners design does away fin ickiness trying get gyro fly variety speeds simple expedient flying speed hows cheap trick uses four systematically related main functional design elements achieve provide stability speed 1 Constant speed rotor 2 Balance forces singular flight speed 3 Pendulum stability 4 Light weight controlled amount induced drag makes almost constant-speed rotor provides lift/drag vector tends stay put can balanced proper alignment prop thrust center gravity slipstream/rotor stream interaction rudder thrust Perturbations flying attitude quickly damped pendu lum action landing gear heavier plane less stable due inertial effects momentary gain/loss airspeed up/downwind turns launches too fast slow will fly much weight launch speed comes highly critical wind will upset Try yourself like add ing weight just rearward CU generate higher angle attack lift watch interesting variety crashes plane destabilizes what starts out smooth flight Construction will find model very quick make few procedures slightly differ ent convention should followed else wont work right balsa version uses North Pacifics 4-dia Skeeter prop bearing equivalent size same no heavier can com pensated bending landing gear aft wheels rubber Sleek Streak equivalent note rubber size fairly critical Select very light straight sheets 1/16 1/32 balsa no denser Skeeters wings used contest grade 1/32 blades soft rigid turned out slightly thicker 1/32 1/20 perfect cant get light wood youd best forget whole thing make plastic model instead can use Sleek Streak landing gear simply bend wheels forward out youll need 1/32 wire rotor shaft might well use make longer landing gear Fly kinds weather experiment rubber Try 3/16 8-strand motors etc Try put Coupe thermal max have some good articles thermals lately Check some RC glider columns Get rubber technique down pat start looking good Wakefield design its much stable Just follow bends original extend legs rotor-shaft bearing must metal nylon else will quickly wear out allow rotor disc tilt out specs indicated CG produces nice climb either real steep climb flat penetration use rearward forward CU building rotor mast respectively forward rearward aw fuselage fuselage mostly cosmetic can vary greatly shape provided same thrust rotor position CU used Build own favorite design uses parameters resulting about 30 hours flight testing fol lowing closely should definitely put ballpark Make rotor first Cut out blades glue together water-based glue wetting out side joint water Holding joint close heat source such heat gun twist negative pitch dihedral blades remember unpowered blades screw downward just glider points down rising thermal Use jig plans get angles exact sure blades straight along diameter sight along re spective leading edges opposite tips Balsarite crystal clear liquid makes balsawood watertight times Monokote sags comes unglued its cause balsa drying out contracting pulling away Monokote Balsarite helps eliminate problem performs same Solarfilm nearly oth er covering makes iron-ons stick bet ter due deep wood penetration Coverite 2779 Philmont Ave Huntingdon Valley Pennsylvania 19006 p roduotviewp rod uctevgewprod uctrviewprod u Ctre o ie W 94 Model Aviation p oduoteviewp rod ootevewprod uct ,viewp rod octreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS C end catalog complete 525 E Warner Ave ama Ana CA 92702 HOBBIES Keep joint hot keep checking until dries correct angles Cut glue vortex generators bottom tips using minimum glue tips must light use minimal decorations must sand rotor Square edges required rough surface actually helps Make rotor shaft bearing Bal ance inverted rotor pin push through use very small amount quick epoxy install bearing Before gets rock hard spin rotor its shaft check bearing exactly cen tered both blades same pitch dihe dral reinforce top bottom joint epoxy feathering out end blade hub taper epoxy isnt faired ends abruptly potential stress line created blade will break hits make fuselage cut out pieces glue rudder body bot tom doublers both sides Bend proper angles rotor shaft score rotor mast doubler accept epoxy right side body Double check correct angles Notch nose prop bearing Epoxy rubber hook sufficiently far back hold new rubber snug Decorate body sparingly felt marker trim Monokote etc Dont dope keep light will fly better wont break hits things Trimming Flying Make sure rotor bearing abso lutely free whip plane around pinwheel fashion until critical item sufficiently loose rotor tip can wobble about 1/16 up down care ful use oil will congeal cold weather slightly tight bearing evidenced spiral right glide Test glide indoors spinning rotor running fuselage nose-up ver tical rotor rear rotor maximum speed release smoothly nose forward body parallel ground glide path should 450 Bend landing gear forward back flatten steepen glide respectively turns consistently right left respec tively decrease increase rotor pitch example increasing negative pitch decreases lift vector left advancing side disc makes plane tilt left Avoid changing shaft angles feel must remember tilting rotor forward respect body also tilting body up forward respect rotor moves CG forward tilts rotor forward respect ground down elevator etc Once glide good calm day wind about ten knots launch glide rotor whizzing like mad Use two hands first release prop before plane make sure nose WE REALLY MOVE OUR TAIL FOR YOU say youve latest Hell say flies like charm say its down need new part uve looked high & low cant find whats bothering buddy Call us today part need way Youll back air record time stock parts popu lar radio controlled helicopters almost nobody else country does So somethings bothering call us ally move tail . have thing need inclined about 150 above intended flight path Trim glide note CG moves aft rotor tilts back lift increases right turn develops Use left rudder correct want under no condition allow left turn under power Use right prop thrust cor rect slow roll leftin addition flattening pitch much stall blades slow rotorand consider using less power terms smaller rubber flatter pitch prop bend steam kettle less turns Gradu ally increase power learn con trol launch Try different adjustments CG bending landing gear try different flight patterns stance gear removed 85 glide path provides 12 right circle will take around living room several times right number turns Dont fly about 5-10mph wind case simply release plane running throwing else airspeed will too great After bit practice can throw plane up launch crosswind etc ROG get rotor spinning itself wind let go off car top isnt spinning fast wont fly Windless indoor ROGs possible can get rotor going fast enough doubly disengaging rubberband suitably hooked wound around hub stretched rudder can also used ground spin up rotor twirls releases hub shoots rearward off rudder simple spin-up device hand launches -dia knurled balsa foam ring extending about w hub index finger strikes rear ward right side Let us know succeeds either doing loops ex ceeding 1 mm thermal OK Have fun RC Helicopters/Schoonard continued page 20 fly bar outward quarter inch time lengthen pushrods mixers time adjustment made dont will change pitch setting rotor blades adjusting helped very little quicken cyclic control next thing remove mixers collective slider remove balls lay out hole spacing additional #32 hole can drilled between two exist ing holes sure laid out holes line equally spaced Re-install balls nuts blue Lock-Tite replace slider block After pushrods replaced everything checked out flew again Super-Baby its good thing have dual rate cyclic because now cyclic control burn move 553 blocks back normal set ting now set half inches rotor hub measure ments inside measurements balls facing inward has also flown cans increases cyclic re sponse Excessive Rotor Tilt rotor head free tilt limit mechanical stops helicopter tends act pen dulum reaction can very irritating especially during fast takeoffs stops seemed rigid system would desirable simple solution cover stops /4 inch ID surgical tubing piece installed stop helicopter reflown improve ment obvious some tilt still re mained An additional piece surgical tubing forced over first February 1977 95 tie ftModel Helicopters Division SC MODELER HOBBY SHOP Helm Planes Cars Boats Radios Parts RC Hobbiests 1999 Larkin Avenue Elgin Illinois 50120 Dept 114312 697-3737
Edition: Model Aviation - 1977/02
Page Numbers: 48, 49, 94, 95
NO OCR TEXT Spinner author describes sneaky fake realistically simulates flight helicopter article contains innovations tips sure read before start Lee Spector YOU HOLD little plane hand wind rubber rotor spins like mad wind kids gather ing crowd cry Hey helicopter Does really fly As let go everyones eyes open see really does quite well too moves out climbing tree heigbt turns downwind flies level turns wind again hovers second power off slowly settles graceful landing Although likes land its wheels rotor spinning kids love too much resist gently catching it floats down Its delightful what Well its helicopter strict sense common usage ex tent helice-ptera means spinning wing Greek its got though has rotor spins freely wind its technically autogyro since thats Juan de Ciervas tradename com panys aircraft relied flapping articulated blades horizontal stabil izer doesnt have Spinner fact simple fake realistically simulates flight heli copter using number sneaky tricks create illusion miniature freeflying chopper originally designed mass-market flying toy molded foam nose inclined upward about 15 degrees rotor spinning up speed launch re leasing prop first plane able play sorts games airfoil tip design thick light blades make gyro work others failed response Dick Sarpolus urging stormed brain came up balsa version direct spin-off Conventional autogyros stable very narrow speed range due ad vancing blade having greater airspeed hence lift retreating blade center lift thus moved laterally advancing side rotor disc trying roll plane its longitudinal axis flapping blade teetering rotor normal ly used attempt compensate somewhat limited success Having build system small free-flight plane hard enough also diffi culty using fixed horizontal stabilizer changes effectiveness different model speeds compounding stability problem February 1977 49 Blade angles show clearly picture Th prop bearing North Pacifics Skeeter wheels rubber Sleek Streak Chordwise strips rotor tips serve vortex generators Profile shape can altered de sired provided arrangement kept same continued page 94 FREE SAMPLE Pin Clamps Try em youll want Send ad selfaddressed stamped envelope ROCKET CITY SPECIALTIES 103 Wholesale Ave NE Huntsville Ala 35811 MA Que dCoupecontinued brazed threaded end prevent hook pulling out drill chuck Most drills have approximately 4-to-i gear ratios Determine what yours can convert winder handle turns motor turns plan graduate Wakefield and/or Unlimited buy ready made winder make heavy-duty hand drill Attach D-type handle remove chuck install permanent winding hook Que dCoupe flies right power right glide Prepare flight double checking surfaces alignment Rudder should 1/16 right Wing tab should down 1/16 Tips washed out 1/16 Stab should titled right side high CU thrust line shown plans slack out motor prop blades held folded position rubberband test glide shimming stab until smooth floating glide slight right turn obtained Put 100 hand turns motor launch right wind nose up slightly Observe carefully right moderate climbing turn indicates well looking dangerous traits time As long model does spiral dive right continue add power using winder ship spiral dives re duce right thrust increase wing tab down adjustment As increase power full winds cor rect climb turn angle thrust adjustments small sanding block flight kit handy Keep right wing up tab Adjust glide turn stab tilt glide angle slight CU shifts may fine tune flight trim small rudder tab stabilizer incidence adjustments Change motors other flight practicing flight competition Spinner/Spector continued page 49 Spinners design does away fin ickiness trying get gyro fly variety speeds simple expedient flying speed hows cheap trick uses four systematically related main functional design elements achieve provide stability speed 1 Constant speed rotor 2 Balance forces singular flight speed 3 Pendulum stability 4 Light weight controlled amount induced drag makes almost constant-speed rotor provides lift/drag vector tends stay put can balanced proper alignment prop thrust center gravity slipstream/rotor stream interaction rudder thrust Perturbations flying attitude quickly damped pendu lum action landing gear heavier plane less stable due inertial effects momentary gain/loss airspeed up/downwind turns launches too fast slow will fly much weight launch speed comes highly critical wind will upset Try yourself like add ing weight just rearward CU generate higher angle attack lift watch interesting variety crashes plane destabilizes what starts out smooth flight Construction will find model very quick make few procedures slightly differ ent convention should followed else wont work right balsa version uses North Pacifics 4-dia Skeeter prop bearing equivalent size same no heavier can com pensated bending landing gear aft wheels rubber Sleek Streak equivalent note rubber size fairly critical Select very light straight sheets 1/16 1/32 balsa no denser Skeeters wings used contest grade 1/32 blades soft rigid turned out slightly thicker 1/32 1/20 perfect cant get light wood youd best forget whole thing make plastic model instead can use Sleek Streak landing gear simply bend wheels forward out youll need 1/32 wire rotor shaft might well use make longer landing gear Fly kinds weather experiment rubber Try 3/16 8-strand motors etc Try put Coupe thermal max have some good articles thermals lately Check some RC glider columns Get rubber technique down pat start looking good Wakefield design its much stable Just follow bends original extend legs rotor-shaft bearing must metal nylon else will quickly wear out allow rotor disc tilt out specs indicated CG produces nice climb either real steep climb flat penetration use rearward forward CU building rotor mast respectively forward rearward aw fuselage fuselage mostly cosmetic can vary greatly shape provided same thrust rotor position CU used Build own favorite design uses parameters resulting about 30 hours flight testing fol lowing closely should definitely put ballpark Make rotor first Cut out blades glue together water-based glue wetting out side joint water Holding joint close heat source such heat gun twist negative pitch dihedral blades remember unpowered blades screw downward just glider points down rising thermal Use jig plans get angles exact sure blades straight along diameter sight along re spective leading edges opposite tips Balsarite crystal clear liquid makes balsawood watertight times Monokote sags comes unglued its cause balsa drying out contracting pulling away Monokote Balsarite helps eliminate problem performs same Solarfilm nearly oth er covering makes iron-ons stick bet ter due deep wood penetration Coverite 2779 Philmont Ave Huntingdon Valley Pennsylvania 19006 p roduotviewp rod uctevgewprod uctrviewprod u Ctre o ie W 94 Model Aviation p oduoteviewp rod ootevewprod uct ,viewp rod octreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS C end catalog complete 525 E Warner Ave ama Ana CA 92702 HOBBIES Keep joint hot keep checking until dries correct angles Cut glue vortex generators bottom tips using minimum glue tips must light use minimal decorations must sand rotor Square edges required rough surface actually helps Make rotor shaft bearing Bal ance inverted rotor pin push through use very small amount quick epoxy install bearing Before gets rock hard spin rotor its shaft check bearing exactly cen tered both blades same pitch dihe dral reinforce top bottom joint epoxy feathering out end blade hub taper epoxy isnt faired ends abruptly potential stress line created blade will break hits make fuselage cut out pieces glue rudder body bot tom doublers both sides Bend proper angles rotor shaft score rotor mast doubler accept epoxy right side body Double check correct angles Notch nose prop bearing Epoxy rubber hook sufficiently far back hold new rubber snug Decorate body sparingly felt marker trim Monokote etc Dont dope keep light will fly better wont break hits things Trimming Flying Make sure rotor bearing abso lutely free whip plane around pinwheel fashion until critical item sufficiently loose rotor tip can wobble about 1/16 up down care ful use oil will congeal cold weather slightly tight bearing evidenced spiral right glide Test glide indoors spinning rotor running fuselage nose-up ver tical rotor rear rotor maximum speed release smoothly nose forward body parallel ground glide path should 450 Bend landing gear forward back flatten steepen glide respectively turns consistently right left respec tively decrease increase rotor pitch example increasing negative pitch decreases lift vector left advancing side disc makes plane tilt left Avoid changing shaft angles feel must remember tilting rotor forward respect body also tilting body up forward respect rotor moves CG forward tilts rotor forward respect ground down elevator etc Once glide good calm day wind about ten knots launch glide rotor whizzing like mad Use two hands first release prop before plane make sure nose WE REALLY MOVE OUR TAIL FOR YOU say youve latest Hell say flies like charm say its down need new part uve looked high & low cant find whats bothering buddy Call us today part need way Youll back air record time stock parts popu lar radio controlled helicopters almost nobody else country does So somethings bothering call us ally move tail . have thing need inclined about 150 above intended flight path Trim glide note CG moves aft rotor tilts back lift increases right turn develops Use left rudder correct want under no condition allow left turn under power Use right prop thrust cor rect slow roll leftin addition flattening pitch much stall blades slow rotorand consider using less power terms smaller rubber flatter pitch prop bend steam kettle less turns Gradu ally increase power learn con trol launch Try different adjustments CG bending landing gear try different flight patterns stance gear removed 85 glide path provides 12 right circle will take around living room several times right number turns Dont fly about 5-10mph wind case simply release plane running throwing else airspeed will too great After bit practice can throw plane up launch crosswind etc ROG get rotor spinning itself wind let go off car top isnt spinning fast wont fly Windless indoor ROGs possible can get rotor going fast enough doubly disengaging rubberband suitably hooked wound around hub stretched rudder can also used ground spin up rotor twirls releases hub shoots rearward off rudder simple spin-up device hand launches -dia knurled balsa foam ring extending about w hub index finger strikes rear ward right side Let us know succeeds either doing loops ex ceeding 1 mm thermal OK Have fun RC Helicopters/Schoonard continued page 20 fly bar outward quarter inch time lengthen pushrods mixers time adjustment made dont will change pitch setting rotor blades adjusting helped very little quicken cyclic control next thing remove mixers collective slider remove balls lay out hole spacing additional #32 hole can drilled between two exist ing holes sure laid out holes line equally spaced Re-install balls nuts blue Lock-Tite replace slider block After pushrods replaced everything checked out flew again Super-Baby its good thing have dual rate cyclic because now cyclic control burn move 553 blocks back normal set ting now set half inches rotor hub measure ments inside measurements balls facing inward has also flown cans increases cyclic re sponse Excessive Rotor Tilt rotor head free tilt limit mechanical stops helicopter tends act pen dulum reaction can very irritating especially during fast takeoffs stops seemed rigid system would desirable simple solution cover stops /4 inch ID surgical tubing piece installed stop helicopter reflown improve ment obvious some tilt still re mained An additional piece surgical tubing forced over first February 1977 95 tie ftModel Helicopters Division SC MODELER HOBBY SHOP Helm Planes Cars Boats Radios Parts RC Hobbiests 1999 Larkin Avenue Elgin Illinois 50120 Dept 114312 697-3737
Edition: Model Aviation - 1977/02
Page Numbers: 48, 49, 94, 95
NO OCR TEXT Spinner author describes sneaky fake realistically simulates flight helicopter article contains innovations tips sure read before start Lee Spector YOU HOLD little plane hand wind rubber rotor spins like mad wind kids gather ing crowd cry Hey helicopter Does really fly As let go everyones eyes open see really does quite well too moves out climbing tree heigbt turns downwind flies level turns wind again hovers second power off slowly settles graceful landing Although likes land its wheels rotor spinning kids love too much resist gently catching it floats down Its delightful what Well its helicopter strict sense common usage ex tent helice-ptera means spinning wing Greek its got though has rotor spins freely wind its technically autogyro since thats Juan de Ciervas tradename com panys aircraft relied flapping articulated blades horizontal stabil izer doesnt have Spinner fact simple fake realistically simulates flight heli copter using number sneaky tricks create illusion miniature freeflying chopper originally designed mass-market flying toy molded foam nose inclined upward about 15 degrees rotor spinning up speed launch re leasing prop first plane able play sorts games airfoil tip design thick light blades make gyro work others failed response Dick Sarpolus urging stormed brain came up balsa version direct spin-off Conventional autogyros stable very narrow speed range due ad vancing blade having greater airspeed hence lift retreating blade center lift thus moved laterally advancing side rotor disc trying roll plane its longitudinal axis flapping blade teetering rotor normal ly used attempt compensate somewhat limited success Having build system small free-flight plane hard enough also diffi culty using fixed horizontal stabilizer changes effectiveness different model speeds compounding stability problem February 1977 49 Blade angles show clearly picture Th prop bearing North Pacifics Skeeter wheels rubber Sleek Streak Chordwise strips rotor tips serve vortex generators Profile shape can altered de sired provided arrangement kept same continued page 94 FREE SAMPLE Pin Clamps Try em youll want Send ad selfaddressed stamped envelope ROCKET CITY SPECIALTIES 103 Wholesale Ave NE Huntsville Ala 35811 MA Que dCoupecontinued brazed threaded end prevent hook pulling out drill chuck Most drills have approximately 4-to-i gear ratios Determine what yours can convert winder handle turns motor turns plan graduate Wakefield and/or Unlimited buy ready made winder make heavy-duty hand drill Attach D-type handle remove chuck install permanent winding hook Que dCoupe flies right power right glide Prepare flight double checking surfaces alignment Rudder should 1/16 right Wing tab should down 1/16 Tips washed out 1/16 Stab should titled right side high CU thrust line shown plans slack out motor prop blades held folded position rubberband test glide shimming stab until smooth floating glide slight right turn obtained Put 100 hand turns motor launch right wind nose up slightly Observe carefully right moderate climbing turn indicates well looking dangerous traits time As long model does spiral dive right continue add power using winder ship spiral dives re duce right thrust increase wing tab down adjustment As increase power full winds cor rect climb turn angle thrust adjustments small sanding block flight kit handy Keep right wing up tab Adjust glide turn stab tilt glide angle slight CU shifts may fine tune flight trim small rudder tab stabilizer incidence adjustments Change motors other flight practicing flight competition Spinner/Spector continued page 49 Spinners design does away fin ickiness trying get gyro fly variety speeds simple expedient flying speed hows cheap trick uses four systematically related main functional design elements achieve provide stability speed 1 Constant speed rotor 2 Balance forces singular flight speed 3 Pendulum stability 4 Light weight controlled amount induced drag makes almost constant-speed rotor provides lift/drag vector tends stay put can balanced proper alignment prop thrust center gravity slipstream/rotor stream interaction rudder thrust Perturbations flying attitude quickly damped pendu lum action landing gear heavier plane less stable due inertial effects momentary gain/loss airspeed up/downwind turns launches too fast slow will fly much weight launch speed comes highly critical wind will upset Try yourself like add ing weight just rearward CU generate higher angle attack lift watch interesting variety crashes plane destabilizes what starts out smooth flight Construction will find model very quick make few procedures slightly differ ent convention should followed else wont work right balsa version uses North Pacifics 4-dia Skeeter prop bearing equivalent size same no heavier can com pensated bending landing gear aft wheels rubber Sleek Streak equivalent note rubber size fairly critical Select very light straight sheets 1/16 1/32 balsa no denser Skeeters wings used contest grade 1/32 blades soft rigid turned out slightly thicker 1/32 1/20 perfect cant get light wood youd best forget whole thing make plastic model instead can use Sleek Streak landing gear simply bend wheels forward out youll need 1/32 wire rotor shaft might well use make longer landing gear Fly kinds weather experiment rubber Try 3/16 8-strand motors etc Try put Coupe thermal max have some good articles thermals lately Check some RC glider columns Get rubber technique down pat start looking good Wakefield design its much stable Just follow bends original extend legs rotor-shaft bearing must metal nylon else will quickly wear out allow rotor disc tilt out specs indicated CG produces nice climb either real steep climb flat penetration use rearward forward CU building rotor mast respectively forward rearward aw fuselage fuselage mostly cosmetic can vary greatly shape provided same thrust rotor position CU used Build own favorite design uses parameters resulting about 30 hours flight testing fol lowing closely should definitely put ballpark Make rotor first Cut out blades glue together water-based glue wetting out side joint water Holding joint close heat source such heat gun twist negative pitch dihedral blades remember unpowered blades screw downward just glider points down rising thermal Use jig plans get angles exact sure blades straight along diameter sight along re spective leading edges opposite tips Balsarite crystal clear liquid makes balsawood watertight times Monokote sags comes unglued its cause balsa drying out contracting pulling away Monokote Balsarite helps eliminate problem performs same Solarfilm nearly oth er covering makes iron-ons stick bet ter due deep wood penetration Coverite 2779 Philmont Ave Huntingdon Valley Pennsylvania 19006 p roduotviewp rod uctevgewprod uctrviewprod u Ctre o ie W 94 Model Aviation p oduoteviewp rod ootevewprod uct ,viewp rod octreview COX ENGINES COX/SANWA RIC SYSTEMS AIRTRONICS KITS C end catalog complete 525 E Warner Ave ama Ana CA 92702 HOBBIES Keep joint hot keep checking until dries correct angles Cut glue vortex generators bottom tips using minimum glue tips must light use minimal decorations must sand rotor Square edges required rough surface actually helps Make rotor shaft bearing Bal ance inverted rotor pin push through use very small amount quick epoxy install bearing Before gets rock hard spin rotor its shaft check bearing exactly cen tered both blades same pitch dihe dral reinforce top bottom joint epoxy feathering out end blade hub taper epoxy isnt faired ends abruptly potential stress line created blade will break hits make fuselage cut out pieces glue rudder body bot tom doublers both sides Bend proper angles rotor shaft score rotor mast doubler accept epoxy right side body Double check correct angles Notch nose prop bearing Epoxy rubber hook sufficiently far back hold new rubber snug Decorate body sparingly felt marker trim Monokote etc Dont dope keep light will fly better wont break hits things Trimming Flying Make sure rotor bearing abso lutely free whip plane around pinwheel fashion until critical item sufficiently loose rotor tip can wobble about 1/16 up down care ful use oil will congeal cold weather slightly tight bearing evidenced spiral right glide Test glide indoors spinning rotor running fuselage nose-up ver tical rotor rear rotor maximum speed release smoothly nose forward body parallel ground glide path should 450 Bend landing gear forward back flatten steepen glide respectively turns consistently right left respec tively decrease increase rotor pitch example increasing negative pitch decreases lift vector left advancing side disc makes plane tilt left Avoid changing shaft angles feel must remember tilting rotor forward respect body also tilting body up forward respect rotor moves CG forward tilts rotor forward respect ground down elevator etc Once glide good calm day wind about ten knots launch glide rotor whizzing like mad Use two hands first release prop before plane make sure nose WE REALLY MOVE OUR TAIL FOR YOU say youve latest Hell say flies like charm say its down need new part uve looked high & low cant find whats bothering buddy Call us today part need way Youll back air record time stock parts popu lar radio controlled helicopters almost nobody else country does So somethings bothering call us ally move tail . have thing need inclined about 150 above intended flight path Trim glide note CG moves aft rotor tilts back lift increases right turn develops Use left rudder correct want under no condition allow left turn under power Use right prop thrust cor rect slow roll leftin addition flattening pitch much stall blades slow rotorand consider using less power terms smaller rubber flatter pitch prop bend steam kettle less turns Gradu ally increase power learn con trol launch Try different adjustments CG bending landing gear try different flight patterns stance gear removed 85 glide path provides 12 right circle will take around living room several times right number turns Dont fly about 5-10mph wind case simply release plane running throwing else airspeed will too great After bit practice can throw plane up launch crosswind etc ROG get rotor spinning itself wind let go off car top isnt spinning fast wont fly Windless indoor ROGs possible can get rotor going fast enough doubly disengaging rubberband suitably hooked wound around hub stretched rudder can also used ground spin up rotor twirls releases hub shoots rearward off rudder simple spin-up device hand launches -dia knurled balsa foam ring extending about w hub index finger strikes rear ward right side Let us know succeeds either doing loops ex ceeding 1 mm thermal OK Have fun RC Helicopters/Schoonard continued page 20 fly bar outward quarter inch time lengthen pushrods mixers time adjustment made dont will change pitch setting rotor blades adjusting helped very little quicken cyclic control next thing remove mixers collective slider remove balls lay out hole spacing additional #32 hole can drilled between two exist ing holes sure laid out holes line equally spaced Re-install balls nuts blue Lock-Tite replace slider block After pushrods replaced everything checked out flew again Super-Baby its good thing have dual rate cyclic because now cyclic control burn move 553 blocks back normal set ting now set half inches rotor hub measure ments inside measurements balls facing inward has also flown cans increases cyclic re sponse Excessive Rotor Tilt rotor head free tilt limit mechanical stops helicopter tends act pen dulum reaction can very irritating especially during fast takeoffs stops seemed rigid system would desirable simple solution cover stops /4 inch ID surgical tubing piece installed stop helicopter reflown improve ment obvious some tilt still re mained An additional piece surgical tubing forced over first February 1977 95 tie ftModel Helicopters Division SC MODELER HOBBY SHOP Helm Planes Cars Boats Radios Parts RC Hobbiests 1999 Larkin Avenue Elgin Illinois 50120 Dept 114312 697-3737