Tk coor Mike Stog Bob Meuser Coot guess have soft spot head low-ceiling indoor hand-launch gliders dont have drive five hours get place can fly school gym cafeteria will fact once held meet fellows living room cost materials negligible although finding suitably soft wood might problem Sigs Contest Balsa often suitable particularly can pick choose little contest-grade model can built four hours look like would take less time sort thing shouldnt rushed lastly little experience 53-year-old arm never could throw very well have able give big names such Ron Wittman Lee Hines run money dedicated 12year-old could well Bob Hayes Jr has done rather well Indoor Hand-Launch Glider meets winning Nats setting records good stuff sent some info about low-ceiling IHLG has cleaning up Midwest competition last few years hands its developers Mike Stan Stoy has some featuresbesides winning lotthat put class itself Its tiny glider merely 12-in wingspan makes double-take West Coast trend toward gliders approaching 100sq-in limit Stoy boys use B-grain wood such models built stiffer C-grain stuff reason B-grain stuff inherently bit flexible Combine very thin trailing edge plus few saw cuts dihedral joint have flapper theory model launched trailing edge will forced upward aerodynamic forces giving rather thin low-drag airfoil section model slows down flaps go down giving low-sink-rate glide apparently works Stoys track record will testify Further note tiny little tail Well tiny tail will job use larger having weight drag launch straight up pattern right-right right bank launch right circle glide tiny rudder undoubtedly con tributes recovery vertical launch cant have too much directional stability vertical launch results vertical glide Stoys wing-sanding method should filed under occult phe nomena havent tried Ill pass Bob Hayes description Sand top camber shown plan flip wing over holding leading trailing edges down sand bottom sur face thicknesses indicated table plans using good sanding block release leading trailing edges wing springs airfoil shape Lets take slowly Recall wing made -in sheet yet ends up 1/16-in thick undercam sanded bent OK sand top surface shape wing root still 1/i thick turn over push edges down bottom surface arches upward Now can sand undercamber using aflat sanding block Certainly method deserves try success speaks itself However have 1/16-in thick wood work might try what think conventional approach First make form Vpvcr4qures distances/ram Le lower fjggres tkicknesses 4 1042 1037 051 V54 10540491043 031 I02L0191OI3 IoOi Ii8 __jizi squares 2uae-z5a,oo*5--grn Stait 5ib 008 -grn IiiI ~1 3 TI II 1 3 4 SMS AirfoiL I WI zZ5 RM C at-oZ chord 7E bent down r ass em/i y bending piece sheet metal sanding block -in balsa shape bottom surface wing perhaps having slightly greater camber Next dampen balsa wing blanks slightly bind form Careful dont crush wood After have dried week two remove blanks form process can shortened few hours forms blanks attached placed oven few hours Use lowest possible oven temperature after blanks bent shape bottom surface sand upper surface obtain desired profile best times Stoy boys have made various ceiling heights least good around regardless age classification 311 sec 21-ft ceiling increasing about linearly 380 sec 34-ft ceiling Gaibreaths Goodie following letter Doug Galbreath tells Heres little thing guarantee Seelig Timer will want make can made 5/16-in steel bolt using hand tools time take meet get questions about Its great finger saver Ok about someone brewing up couple hundred home workshop ped dling off buck Coles Airfoil Remember kookie airfoil designed Hank Cole used recently Dave Parsons shown column Au gust September issues always cringe lit tle publish something like worked just might some thing fluky about might make work someone else despite its impressive pedigree therefore both pleasure relief learned just prior departure par ticipate World Champs Bulgaria Jlana9e - aYa rod jrocL ~cut act fit winafYng Drill Ac /zandl& u5ing gateacbs qco Dave Rounsaville built two wings using Coles foilone having built-up construction other having sheet-covered constructionand both worked great Dave says glide phenomenal climb suffers slightly gets 150 sec flights still air 4-sec engine run can sure Dave running some hottest Rossi R-15 engines business highly respectable flight time Mini-Wrench Doug Galbreath sent note winding device Seelig timers reminded wrench made Tatone timers might interest Seelig timers difficult turn hand Dougs wrench keeps fingers turning hamburger after days flying Doug puts problem Tatone timers So what problem Meusers Mini-Wrench solves two First handy disassembling reassembling timer prevents chewing up hex nut pliers Second permits completely buried timer 38 Model Aviation Free Flight Duration installation timer set deep fuse lage covered thin celluloid window glued taped place window has hole large enough accept business end mini-wrench slot wide enough clear release-arm timer cuts loose advantage over conventional surface mount two First less drag totally unimportant D-Gas job perhaps important Nordic glider Wakefield rubberpower model small gas model Second window presents additional obstacle overcome dirt particles intent finding way vital organs timer Tissue Tantrunis Weve hearing some time colored Japanese tissue will no longer produced out blue re ceive flier Sig regarding its new Plyspan super-tough laminated Japanese tissue manu factured specifically covering model air planes available colors response What heck letter Glen Sigafoose explained Plyspan currently available colors no longer produced colors present stocks gone thats Plyspan comes three weight grades Lite-Flite Medium-Flite white Super Flite Lite-Flite would pass good old-fashioned Japanese tissue Its weight about same anything uniform closer grained some might take less dope seal pores Super Flite about twice weight regular tissue seems little porous Lite-Flite less porous some other heavy paper covering materials might well serve substitute expensive time consuming double-tissue coverings used larger gas models Medium-Flite would believe lies between comes white some other sources tissue PeckPolymers puts out neat Peanut Scale kits now combined WC Hannan Graphics plans such Peck carries Super-Lite Japanese tissue five colors plus white 20 per 20 X 18 sheet very nice stuff indeed addition continue sell older P-P Tissue also colors old price l5 per sheet Address PO Box 2498 La Mesa Calif 92041 Jim Noonan runs office up Oldtimer Models peddles ten different paper cover ings some colors PO Box 18002 Milwau kee Wisc 53218 Micro-X Products PO Box 1063 Lorain Ohio 44055 carries Japanese tissue several colors Marlow Engineering sells Featherlite Tissue 14 colors including such oddities aluminum olive drab 20 20 X 30 sheets Write 6850 Vineland North Hollywood Calif 91605 about 50% heavier average Japanese tissue dime stamped envelope Bill Wilson PO Drawer U Kountze Texas 77625 will send book samples 19 colors domestic tissue can see what get before buy Blue Ridge Models PO Box 9188 Asheville NC 28805 has ample supply same fine tissue puts its Coupe kits either individual free-flighter cottage-industry kit manufacturer might check out Colors yellow orange white Minimum order 20 sheets 20 per 18 X 20 sheet plus $1 postage handling Rocket Racket Rocket-power freeflight models various forms have official AMA rulebook some time Despite some less pleasant aspects mode propulsionfuse wont light wont stay lit gaskets simply wontthe event re mains rather popular development tlElZS J/and1e wire Jd tubin8 t headA//cn cap screw S&c* ezcrilthuzy tycther wIth class continues Rumors regarding avail ability motors fuel fuse run rampant So year two seems check Nathan Polk head man down Polks ModelCraft Hobbies see whats happening Polks sole source Jetex-brand stuff didnt know Nathan brother Irwin ones primarily responsible popularizing rocket-power F/F modeling US later throughout world incidentally Un fortunately production stuff got hands foreign interests apparently corporate minds other things So latest Nathan Polk stage production company has given up completely working designs tooling available us re-estab lish line completely have finally licked problem producing wick now fuel after will begin fabri cate whatever engines missing line Currently following stuff available EN2 Rocket HT 50 engines fuel wicks fuel wicks EN3 enginethe popular F/F Rocket eventsbut no engines classic book Jetex Build ing/Designing Maintenance Care Jetex still lists paltry buck As evidence event long ways dead Don Chancey received 1975 Model Year award National Free Flight Society Canned Heat rocket model construction article appeared August 1975 issue Model Airplane News plans available both MAN NFFS An electric ignition system Jetex developed Dave Larry Parsons appeared col umn January 1975 issue American Air craft Modeler system being put commercial form Jim Crocket Replicas Jim also peddles slick mounting plate Jetex 150 engine plus gaskets Baby ROG Kit Bob Peck Peck-Poly mers announces kit PECK-ROG reminiscent ROGs thirties us teethed Kit includes die-cut self-aligning wing mount motor stick cut length necessary wood tissue plastic prop bearing assembly bent landing gear wire light plastic wheels plus trim tabs easy adjustment complete plans buildingand-flying instructions good way individ uals groups get started model aviation $139 dealer Peck-Polymers P0 Box 2498 La Mesa CA 92041 Brokenspar Brake last Its nice get advance notice new products can break news just hit market scoop other F/F columnists everybody announced new product year ago just now pro duction Brokenspar Brake stops prop Rossi 15 almost instantly conjunction usual flood-off procedure Price $2500 plus $300 postage handling Michi gan residents add 4% sales tax Order directly Brokenspar Inc P0 Box 1104 Birming ham MI 48012 better still NFFS Supplies 4200 Gregory St Oakland CA 94619 latter address familiar cause wife Joanne has taken over NFFS Supplies Peggy Xenakis Oh Too Oh Tee Thats disgustingly clever way introducing item about 02-OldTimer event little devils limited 020 cu engines 36-in span must reasonable scaled-down replicas pre-1942 models number cottage-industry manu facturers peddle excellent kits models continued page 76 December 1975 39 spirit freedom flight certainly personified graceful takeoff mere ROG Its Peck-Polymerait ought have name besides just ROG such Sprite Anyway its really complete kita good way get started Bob points Out copy MORE WhAi3GTfl laSter same powerYELLOW4 e ptCPROPELL ee\\et jedoto9o~ 5 3 54304 Pushee74 7678504 e'Blade63 64354 aoSkO ~l64Pad84 868 65 96 97 QR A86114 116 liBRi 96 106 i IRC 124 3 BIaIe Tpactort2 5 12 6 15O 5354 63 64 ORISH 3 Blade Pusher 63ST JOHN BROS INDIANA 46373 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNS42Boeing P36A$14 See no, ie45Boeing F4B3P12 $9 36Fokke Tipo ORi 5747Ce Book P6 E$15 38Col R Sped XOI $1047GohoeI F1JC5$15 39Col B Ninepn1 12 $947CrlC IlelIdne$11 O Pep 5848Glen Gledielo$10 08 Senel Bee II $949SI Keydol 9T17$10 FB12B&C $1150PeIiI Fl 9-6$10 II Onnel $98Slinnen OW SB$18 90995Mo1n po7F1 $1157Ce$lEPolnon$15 MBl $1457Ce SO3C 1 Son$14 57 InAne TeinTeiI$958 BoeingB9Benbe$9 61 AEG GIV Bonibe $13 60 Deen 038 000 $13 —Y66 Cnn 03 Ben 811 $1063 GSkynnknlFSFl $14 107 Mn1n MEl$2087 Lind tnl Siin $13 0peSpilEo $13 MANY MANY MORE 48 Mo lOSE fy814 ss NAM 835 $30 25e 80 $25 50 Hedon Benb, $15 71 onegeoscsoss * 50 Elk Widen P51 $19 77 Boo B 17G Tn823 51BneB17GFn1$1840BOegge C78$2 51 GWiIdnelF4F3 $15 enno PASS 1 51 Jnnken JO88$10 0 $12 S6CWnhenkP4O$15 RE SBRE TO ABB2O M MnIIignn $15 FOR HANDLING & INS MODELDOMS QUICKEST MB Right Louis Garamis immortal Stratostreak built author kit Cal Aero Its scaled-down old-timer 02 power Above Playboy Senior 36 span 02 Cal Aero will drop out busi ness soon stock kits gone Treat yourself l FF Duration/Meuser continued page 39 class Bob Oslan operates under name Cal Aero kits sold world-wide classy ads sees would assume business better ever according Bob Sales have fallen off has decided drop out busi ness still has few hundred kits hand gone thats Its darned shame kits excellent quality models inexpensive small enough store anywhere fall together kit no time Strato-Streak stands eloquent testimony fact idiot can adjust fly reasonably well small models can survive numerous fullpower crashes zero damage scientific circles known beetle elephant effect Drop beetle altitude ten times its length onto floor have puzzled somewhat amused very live beetle Drop elephant Onto floor altitude ten times its length have instant elephanthurger Further 020-Old-Timers excellent vehicles some smaller electric propul sion units Strato-Streak flies docilely Mattel unitnow marketed Monogram will VTO easily VL-Products Hytork 48 propulsion unit have also used wing tail Coupe dHiver model flew well its short glorious life really wonder whether some super-sophisticated designs see worth trouble insisted flying right-right always leads disaster So want try Oh-Too Oh-Tee better hurry Bob still has few kits dealer cant supply write Cal Aero 7142 Bluesails Dr Huntington Beach Calif 92647 price list Plastic Props Bunch Peck-Polymers line plastic props rubber-power models now extends 4 9 diameters Com paring props equal diameter find P-P props bit heavier have wider blades North Pacific brand props smid gin lighter Kaysun props 4 incher intended 13-inch-span Peanut Scale models 9 should great scale sport competition models having wingspans large 36 Recall AMA competition rules permit store-bought plastic props rubber-power events following table includes data meas urements made Nominal diam 4-3/4 6 7 8 9-1/2 Measured diem 4-11/16 5-15/16 7 7-13/16 9-3/8 Pitch Pitch Weqht Blade Price Diam gruns Width 64142007515c 58102208825c 42113010230c 70094811840c 77086714450c dimensions indies minimum order $198 postage handling charge 10% suggest write catalog get straight Catalog price 25 Peck-Polymers P0 Box 2498 La Mesa CA 92041 Ruff-Stuff This new sheet sandpaper pressure-sensitive backing enables customize special sanding shapeslike flat square rectangular sanding boards long sanding sticks special shapes shown illustrationwithout muss fuss glu ing sandpaper sending blocks adheres metal plastic wood glass other materials Simply cut fit peel stickfor instant use Blocks reuseablejust peel apply new Ruff-Stuff medium fine superfine grits Available dealer $39 per 9 x 11 sheet $250 6 sheets Allied Design Corp 5531 Shoreview Dr. Palos Verdes Peninsula Calif 90274 76 Model Aviation
Edition: Model Aviation - 1975/12
Page Numbers: 38, 39, 76
Tk coor Mike Stog Bob Meuser Coot guess have soft spot head low-ceiling indoor hand-launch gliders dont have drive five hours get place can fly school gym cafeteria will fact once held meet fellows living room cost materials negligible although finding suitably soft wood might problem Sigs Contest Balsa often suitable particularly can pick choose little contest-grade model can built four hours look like would take less time sort thing shouldnt rushed lastly little experience 53-year-old arm never could throw very well have able give big names such Ron Wittman Lee Hines run money dedicated 12year-old could well Bob Hayes Jr has done rather well Indoor Hand-Launch Glider meets winning Nats setting records good stuff sent some info about low-ceiling IHLG has cleaning up Midwest competition last few years hands its developers Mike Stan Stoy has some featuresbesides winning lotthat put class itself Its tiny glider merely 12-in wingspan makes double-take West Coast trend toward gliders approaching 100sq-in limit Stoy boys use B-grain wood such models built stiffer C-grain stuff reason B-grain stuff inherently bit flexible Combine very thin trailing edge plus few saw cuts dihedral joint have flapper theory model launched trailing edge will forced upward aerodynamic forces giving rather thin low-drag airfoil section model slows down flaps go down giving low-sink-rate glide apparently works Stoys track record will testify Further note tiny little tail Well tiny tail will job use larger having weight drag launch straight up pattern right-right right bank launch right circle glide tiny rudder undoubtedly con tributes recovery vertical launch cant have too much directional stability vertical launch results vertical glide Stoys wing-sanding method should filed under occult phe nomena havent tried Ill pass Bob Hayes description Sand top camber shown plan flip wing over holding leading trailing edges down sand bottom sur face thicknesses indicated table plans using good sanding block release leading trailing edges wing springs airfoil shape Lets take slowly Recall wing made -in sheet yet ends up 1/16-in thick undercam sanded bent OK sand top surface shape wing root still 1/i thick turn over push edges down bottom surface arches upward Now can sand undercamber using aflat sanding block Certainly method deserves try success speaks itself However have 1/16-in thick wood work might try what think conventional approach First make form Vpvcr4qures distances/ram Le lower fjggres tkicknesses 4 1042 1037 051 V54 10540491043 031 I02L0191OI3 IoOi Ii8 __jizi squares 2uae-z5a,oo*5--grn Stait 5ib 008 -grn IiiI ~1 3 TI II 1 3 4 SMS AirfoiL I WI zZ5 RM C at-oZ chord 7E bent down r ass em/i y bending piece sheet metal sanding block -in balsa shape bottom surface wing perhaps having slightly greater camber Next dampen balsa wing blanks slightly bind form Careful dont crush wood After have dried week two remove blanks form process can shortened few hours forms blanks attached placed oven few hours Use lowest possible oven temperature after blanks bent shape bottom surface sand upper surface obtain desired profile best times Stoy boys have made various ceiling heights least good around regardless age classification 311 sec 21-ft ceiling increasing about linearly 380 sec 34-ft ceiling Gaibreaths Goodie following letter Doug Galbreath tells Heres little thing guarantee Seelig Timer will want make can made 5/16-in steel bolt using hand tools time take meet get questions about Its great finger saver Ok about someone brewing up couple hundred home workshop ped dling off buck Coles Airfoil Remember kookie airfoil designed Hank Cole used recently Dave Parsons shown column Au gust September issues always cringe lit tle publish something like worked just might some thing fluky about might make work someone else despite its impressive pedigree therefore both pleasure relief learned just prior departure par ticipate World Champs Bulgaria Jlana9e - aYa rod jrocL ~cut act fit winafYng Drill Ac /zandl& u5ing gateacbs qco Dave Rounsaville built two wings using Coles foilone having built-up construction other having sheet-covered constructionand both worked great Dave says glide phenomenal climb suffers slightly gets 150 sec flights still air 4-sec engine run can sure Dave running some hottest Rossi R-15 engines business highly respectable flight time Mini-Wrench Doug Galbreath sent note winding device Seelig timers reminded wrench made Tatone timers might interest Seelig timers difficult turn hand Dougs wrench keeps fingers turning hamburger after days flying Doug puts problem Tatone timers So what problem Meusers Mini-Wrench solves two First handy disassembling reassembling timer prevents chewing up hex nut pliers Second permits completely buried timer 38 Model Aviation Free Flight Duration installation timer set deep fuse lage covered thin celluloid window glued taped place window has hole large enough accept business end mini-wrench slot wide enough clear release-arm timer cuts loose advantage over conventional surface mount two First less drag totally unimportant D-Gas job perhaps important Nordic glider Wakefield rubberpower model small gas model Second window presents additional obstacle overcome dirt particles intent finding way vital organs timer Tissue Tantrunis Weve hearing some time colored Japanese tissue will no longer produced out blue re ceive flier Sig regarding its new Plyspan super-tough laminated Japanese tissue manu factured specifically covering model air planes available colors response What heck letter Glen Sigafoose explained Plyspan currently available colors no longer produced colors present stocks gone thats Plyspan comes three weight grades Lite-Flite Medium-Flite white Super Flite Lite-Flite would pass good old-fashioned Japanese tissue Its weight about same anything uniform closer grained some might take less dope seal pores Super Flite about twice weight regular tissue seems little porous Lite-Flite less porous some other heavy paper covering materials might well serve substitute expensive time consuming double-tissue coverings used larger gas models Medium-Flite would believe lies between comes white some other sources tissue PeckPolymers puts out neat Peanut Scale kits now combined WC Hannan Graphics plans such Peck carries Super-Lite Japanese tissue five colors plus white 20 per 20 X 18 sheet very nice stuff indeed addition continue sell older P-P Tissue also colors old price l5 per sheet Address PO Box 2498 La Mesa Calif 92041 Jim Noonan runs office up Oldtimer Models peddles ten different paper cover ings some colors PO Box 18002 Milwau kee Wisc 53218 Micro-X Products PO Box 1063 Lorain Ohio 44055 carries Japanese tissue several colors Marlow Engineering sells Featherlite Tissue 14 colors including such oddities aluminum olive drab 20 20 X 30 sheets Write 6850 Vineland North Hollywood Calif 91605 about 50% heavier average Japanese tissue dime stamped envelope Bill Wilson PO Drawer U Kountze Texas 77625 will send book samples 19 colors domestic tissue can see what get before buy Blue Ridge Models PO Box 9188 Asheville NC 28805 has ample supply same fine tissue puts its Coupe kits either individual free-flighter cottage-industry kit manufacturer might check out Colors yellow orange white Minimum order 20 sheets 20 per 18 X 20 sheet plus $1 postage handling Rocket Racket Rocket-power freeflight models various forms have official AMA rulebook some time Despite some less pleasant aspects mode propulsionfuse wont light wont stay lit gaskets simply wontthe event re mains rather popular development tlElZS J/and1e wire Jd tubin8 t headA//cn cap screw S&c* ezcrilthuzy tycther wIth class continues Rumors regarding avail ability motors fuel fuse run rampant So year two seems check Nathan Polk head man down Polks ModelCraft Hobbies see whats happening Polks sole source Jetex-brand stuff didnt know Nathan brother Irwin ones primarily responsible popularizing rocket-power F/F modeling US later throughout world incidentally Un fortunately production stuff got hands foreign interests apparently corporate minds other things So latest Nathan Polk stage production company has given up completely working designs tooling available us re-estab lish line completely have finally licked problem producing wick now fuel after will begin fabri cate whatever engines missing line Currently following stuff available EN2 Rocket HT 50 engines fuel wicks fuel wicks EN3 enginethe popular F/F Rocket eventsbut no engines classic book Jetex Build ing/Designing Maintenance Care Jetex still lists paltry buck As evidence event long ways dead Don Chancey received 1975 Model Year award National Free Flight Society Canned Heat rocket model construction article appeared August 1975 issue Model Airplane News plans available both MAN NFFS An electric ignition system Jetex developed Dave Larry Parsons appeared col umn January 1975 issue American Air craft Modeler system being put commercial form Jim Crocket Replicas Jim also peddles slick mounting plate Jetex 150 engine plus gaskets Baby ROG Kit Bob Peck Peck-Poly mers announces kit PECK-ROG reminiscent ROGs thirties us teethed Kit includes die-cut self-aligning wing mount motor stick cut length necessary wood tissue plastic prop bearing assembly bent landing gear wire light plastic wheels plus trim tabs easy adjustment complete plans buildingand-flying instructions good way individ uals groups get started model aviation $139 dealer Peck-Polymers P0 Box 2498 La Mesa CA 92041 Brokenspar Brake last Its nice get advance notice new products can break news just hit market scoop other F/F columnists everybody announced new product year ago just now pro duction Brokenspar Brake stops prop Rossi 15 almost instantly conjunction usual flood-off procedure Price $2500 plus $300 postage handling Michi gan residents add 4% sales tax Order directly Brokenspar Inc P0 Box 1104 Birming ham MI 48012 better still NFFS Supplies 4200 Gregory St Oakland CA 94619 latter address familiar cause wife Joanne has taken over NFFS Supplies Peggy Xenakis Oh Too Oh Tee Thats disgustingly clever way introducing item about 02-OldTimer event little devils limited 020 cu engines 36-in span must reasonable scaled-down replicas pre-1942 models number cottage-industry manu facturers peddle excellent kits models continued page 76 December 1975 39 spirit freedom flight certainly personified graceful takeoff mere ROG Its Peck-Polymerait ought have name besides just ROG such Sprite Anyway its really complete kita good way get started Bob points Out copy MORE WhAi3GTfl laSter same powerYELLOW4 e ptCPROPELL ee\\et jedoto9o~ 5 3 54304 Pushee74 7678504 e'Blade63 64354 aoSkO ~l64Pad84 868 65 96 97 QR A86114 116 liBRi 96 106 i IRC 124 3 BIaIe Tpactort2 5 12 6 15O 5354 63 64 ORISH 3 Blade Pusher 63ST JOHN BROS INDIANA 46373 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNS42Boeing P36A$14 See no, ie45Boeing F4B3P12 $9 36Fokke Tipo ORi 5747Ce Book P6 E$15 38Col R Sped XOI $1047GohoeI F1JC5$15 39Col B Ninepn1 12 $947CrlC IlelIdne$11 O Pep 5848Glen Gledielo$10 08 Senel Bee II $949SI Keydol 9T17$10 FB12B&C $1150PeIiI Fl 9-6$10 II Onnel $98Slinnen OW SB$18 90995Mo1n po7F1 $1157Ce$lEPolnon$15 MBl $1457Ce SO3C 1 Son$14 57 InAne TeinTeiI$958 BoeingB9Benbe$9 61 AEG GIV Bonibe $13 60 Deen 038 000 $13 —Y66 Cnn 03 Ben 811 $1063 GSkynnknlFSFl $14 107 Mn1n MEl$2087 Lind tnl Siin $13 0peSpilEo $13 MANY MANY MORE 48 Mo lOSE fy814 ss NAM 835 $30 25e 80 $25 50 Hedon Benb, $15 71 onegeoscsoss * 50 Elk Widen P51 $19 77 Boo B 17G Tn823 51BneB17GFn1$1840BOegge C78$2 51 GWiIdnelF4F3 $15 enno PASS 1 51 Jnnken JO88$10 0 $12 S6CWnhenkP4O$15 RE SBRE TO ABB2O M MnIIignn $15 FOR HANDLING & INS MODELDOMS QUICKEST MB Right Louis Garamis immortal Stratostreak built author kit Cal Aero Its scaled-down old-timer 02 power Above Playboy Senior 36 span 02 Cal Aero will drop out busi ness soon stock kits gone Treat yourself l FF Duration/Meuser continued page 39 class Bob Oslan operates under name Cal Aero kits sold world-wide classy ads sees would assume business better ever according Bob Sales have fallen off has decided drop out busi ness still has few hundred kits hand gone thats Its darned shame kits excellent quality models inexpensive small enough store anywhere fall together kit no time Strato-Streak stands eloquent testimony fact idiot can adjust fly reasonably well small models can survive numerous fullpower crashes zero damage scientific circles known beetle elephant effect Drop beetle altitude ten times its length onto floor have puzzled somewhat amused very live beetle Drop elephant Onto floor altitude ten times its length have instant elephanthurger Further 020-Old-Timers excellent vehicles some smaller electric propul sion units Strato-Streak flies docilely Mattel unitnow marketed Monogram will VTO easily VL-Products Hytork 48 propulsion unit have also used wing tail Coupe dHiver model flew well its short glorious life really wonder whether some super-sophisticated designs see worth trouble insisted flying right-right always leads disaster So want try Oh-Too Oh-Tee better hurry Bob still has few kits dealer cant supply write Cal Aero 7142 Bluesails Dr Huntington Beach Calif 92647 price list Plastic Props Bunch Peck-Polymers line plastic props rubber-power models now extends 4 9 diameters Com paring props equal diameter find P-P props bit heavier have wider blades North Pacific brand props smid gin lighter Kaysun props 4 incher intended 13-inch-span Peanut Scale models 9 should great scale sport competition models having wingspans large 36 Recall AMA competition rules permit store-bought plastic props rubber-power events following table includes data meas urements made Nominal diam 4-3/4 6 7 8 9-1/2 Measured diem 4-11/16 5-15/16 7 7-13/16 9-3/8 Pitch Pitch Weqht Blade Price Diam gruns Width 64142007515c 58102208825c 42113010230c 70094811840c 77086714450c dimensions indies minimum order $198 postage handling charge 10% suggest write catalog get straight Catalog price 25 Peck-Polymers P0 Box 2498 La Mesa CA 92041 Ruff-Stuff This new sheet sandpaper pressure-sensitive backing enables customize special sanding shapeslike flat square rectangular sanding boards long sanding sticks special shapes shown illustrationwithout muss fuss glu ing sandpaper sending blocks adheres metal plastic wood glass other materials Simply cut fit peel stickfor instant use Blocks reuseablejust peel apply new Ruff-Stuff medium fine superfine grits Available dealer $39 per 9 x 11 sheet $250 6 sheets Allied Design Corp 5531 Shoreview Dr. Palos Verdes Peninsula Calif 90274 76 Model Aviation
Edition: Model Aviation - 1975/12
Page Numbers: 38, 39, 76
Tk coor Mike Stog Bob Meuser Coot guess have soft spot head low-ceiling indoor hand-launch gliders dont have drive five hours get place can fly school gym cafeteria will fact once held meet fellows living room cost materials negligible although finding suitably soft wood might problem Sigs Contest Balsa often suitable particularly can pick choose little contest-grade model can built four hours look like would take less time sort thing shouldnt rushed lastly little experience 53-year-old arm never could throw very well have able give big names such Ron Wittman Lee Hines run money dedicated 12year-old could well Bob Hayes Jr has done rather well Indoor Hand-Launch Glider meets winning Nats setting records good stuff sent some info about low-ceiling IHLG has cleaning up Midwest competition last few years hands its developers Mike Stan Stoy has some featuresbesides winning lotthat put class itself Its tiny glider merely 12-in wingspan makes double-take West Coast trend toward gliders approaching 100sq-in limit Stoy boys use B-grain wood such models built stiffer C-grain stuff reason B-grain stuff inherently bit flexible Combine very thin trailing edge plus few saw cuts dihedral joint have flapper theory model launched trailing edge will forced upward aerodynamic forces giving rather thin low-drag airfoil section model slows down flaps go down giving low-sink-rate glide apparently works Stoys track record will testify Further note tiny little tail Well tiny tail will job use larger having weight drag launch straight up pattern right-right right bank launch right circle glide tiny rudder undoubtedly con tributes recovery vertical launch cant have too much directional stability vertical launch results vertical glide Stoys wing-sanding method should filed under occult phe nomena havent tried Ill pass Bob Hayes description Sand top camber shown plan flip wing over holding leading trailing edges down sand bottom sur face thicknesses indicated table plans using good sanding block release leading trailing edges wing springs airfoil shape Lets take slowly Recall wing made -in sheet yet ends up 1/16-in thick undercam sanded bent OK sand top surface shape wing root still 1/i thick turn over push edges down bottom surface arches upward Now can sand undercamber using aflat sanding block Certainly method deserves try success speaks itself However have 1/16-in thick wood work might try what think conventional approach First make form Vpvcr4qures distances/ram Le lower fjggres tkicknesses 4 1042 1037 051 V54 10540491043 031 I02L0191OI3 IoOi Ii8 __jizi squares 2uae-z5a,oo*5--grn Stait 5ib 008 -grn IiiI ~1 3 TI II 1 3 4 SMS AirfoiL I WI zZ5 RM C at-oZ chord 7E bent down r ass em/i y bending piece sheet metal sanding block -in balsa shape bottom surface wing perhaps having slightly greater camber Next dampen balsa wing blanks slightly bind form Careful dont crush wood After have dried week two remove blanks form process can shortened few hours forms blanks attached placed oven few hours Use lowest possible oven temperature after blanks bent shape bottom surface sand upper surface obtain desired profile best times Stoy boys have made various ceiling heights least good around regardless age classification 311 sec 21-ft ceiling increasing about linearly 380 sec 34-ft ceiling Gaibreaths Goodie following letter Doug Galbreath tells Heres little thing guarantee Seelig Timer will want make can made 5/16-in steel bolt using hand tools time take meet get questions about Its great finger saver Ok about someone brewing up couple hundred home workshop ped dling off buck Coles Airfoil Remember kookie airfoil designed Hank Cole used recently Dave Parsons shown column Au gust September issues always cringe lit tle publish something like worked just might some thing fluky about might make work someone else despite its impressive pedigree therefore both pleasure relief learned just prior departure par ticipate World Champs Bulgaria Jlana9e - aYa rod jrocL ~cut act fit winafYng Drill Ac /zandl& u5ing gateacbs qco Dave Rounsaville built two wings using Coles foilone having built-up construction other having sheet-covered constructionand both worked great Dave says glide phenomenal climb suffers slightly gets 150 sec flights still air 4-sec engine run can sure Dave running some hottest Rossi R-15 engines business highly respectable flight time Mini-Wrench Doug Galbreath sent note winding device Seelig timers reminded wrench made Tatone timers might interest Seelig timers difficult turn hand Dougs wrench keeps fingers turning hamburger after days flying Doug puts problem Tatone timers So what problem Meusers Mini-Wrench solves two First handy disassembling reassembling timer prevents chewing up hex nut pliers Second permits completely buried timer 38 Model Aviation Free Flight Duration installation timer set deep fuse lage covered thin celluloid window glued taped place window has hole large enough accept business end mini-wrench slot wide enough clear release-arm timer cuts loose advantage over conventional surface mount two First less drag totally unimportant D-Gas job perhaps important Nordic glider Wakefield rubberpower model small gas model Second window presents additional obstacle overcome dirt particles intent finding way vital organs timer Tissue Tantrunis Weve hearing some time colored Japanese tissue will no longer produced out blue re ceive flier Sig regarding its new Plyspan super-tough laminated Japanese tissue manu factured specifically covering model air planes available colors response What heck letter Glen Sigafoose explained Plyspan currently available colors no longer produced colors present stocks gone thats Plyspan comes three weight grades Lite-Flite Medium-Flite white Super Flite Lite-Flite would pass good old-fashioned Japanese tissue Its weight about same anything uniform closer grained some might take less dope seal pores Super Flite about twice weight regular tissue seems little porous Lite-Flite less porous some other heavy paper covering materials might well serve substitute expensive time consuming double-tissue coverings used larger gas models Medium-Flite would believe lies between comes white some other sources tissue PeckPolymers puts out neat Peanut Scale kits now combined WC Hannan Graphics plans such Peck carries Super-Lite Japanese tissue five colors plus white 20 per 20 X 18 sheet very nice stuff indeed addition continue sell older P-P Tissue also colors old price l5 per sheet Address PO Box 2498 La Mesa Calif 92041 Jim Noonan runs office up Oldtimer Models peddles ten different paper cover ings some colors PO Box 18002 Milwau kee Wisc 53218 Micro-X Products PO Box 1063 Lorain Ohio 44055 carries Japanese tissue several colors Marlow Engineering sells Featherlite Tissue 14 colors including such oddities aluminum olive drab 20 20 X 30 sheets Write 6850 Vineland North Hollywood Calif 91605 about 50% heavier average Japanese tissue dime stamped envelope Bill Wilson PO Drawer U Kountze Texas 77625 will send book samples 19 colors domestic tissue can see what get before buy Blue Ridge Models PO Box 9188 Asheville NC 28805 has ample supply same fine tissue puts its Coupe kits either individual free-flighter cottage-industry kit manufacturer might check out Colors yellow orange white Minimum order 20 sheets 20 per 18 X 20 sheet plus $1 postage handling Rocket Racket Rocket-power freeflight models various forms have official AMA rulebook some time Despite some less pleasant aspects mode propulsionfuse wont light wont stay lit gaskets simply wontthe event re mains rather popular development tlElZS J/and1e wire Jd tubin8 t headA//cn cap screw S&c* ezcrilthuzy tycther wIth class continues Rumors regarding avail ability motors fuel fuse run rampant So year two seems check Nathan Polk head man down Polks ModelCraft Hobbies see whats happening Polks sole source Jetex-brand stuff didnt know Nathan brother Irwin ones primarily responsible popularizing rocket-power F/F modeling US later throughout world incidentally Un fortunately production stuff got hands foreign interests apparently corporate minds other things So latest Nathan Polk stage production company has given up completely working designs tooling available us re-estab lish line completely have finally licked problem producing wick now fuel after will begin fabri cate whatever engines missing line Currently following stuff available EN2 Rocket HT 50 engines fuel wicks fuel wicks EN3 enginethe popular F/F Rocket eventsbut no engines classic book Jetex Build ing/Designing Maintenance Care Jetex still lists paltry buck As evidence event long ways dead Don Chancey received 1975 Model Year award National Free Flight Society Canned Heat rocket model construction article appeared August 1975 issue Model Airplane News plans available both MAN NFFS An electric ignition system Jetex developed Dave Larry Parsons appeared col umn January 1975 issue American Air craft Modeler system being put commercial form Jim Crocket Replicas Jim also peddles slick mounting plate Jetex 150 engine plus gaskets Baby ROG Kit Bob Peck Peck-Poly mers announces kit PECK-ROG reminiscent ROGs thirties us teethed Kit includes die-cut self-aligning wing mount motor stick cut length necessary wood tissue plastic prop bearing assembly bent landing gear wire light plastic wheels plus trim tabs easy adjustment complete plans buildingand-flying instructions good way individ uals groups get started model aviation $139 dealer Peck-Polymers P0 Box 2498 La Mesa CA 92041 Brokenspar Brake last Its nice get advance notice new products can break news just hit market scoop other F/F columnists everybody announced new product year ago just now pro duction Brokenspar Brake stops prop Rossi 15 almost instantly conjunction usual flood-off procedure Price $2500 plus $300 postage handling Michi gan residents add 4% sales tax Order directly Brokenspar Inc P0 Box 1104 Birming ham MI 48012 better still NFFS Supplies 4200 Gregory St Oakland CA 94619 latter address familiar cause wife Joanne has taken over NFFS Supplies Peggy Xenakis Oh Too Oh Tee Thats disgustingly clever way introducing item about 02-OldTimer event little devils limited 020 cu engines 36-in span must reasonable scaled-down replicas pre-1942 models number cottage-industry manu facturers peddle excellent kits models continued page 76 December 1975 39 spirit freedom flight certainly personified graceful takeoff mere ROG Its Peck-Polymerait ought have name besides just ROG such Sprite Anyway its really complete kita good way get started Bob points Out copy MORE WhAi3GTfl laSter same powerYELLOW4 e ptCPROPELL ee\\et jedoto9o~ 5 3 54304 Pushee74 7678504 e'Blade63 64354 aoSkO ~l64Pad84 868 65 96 97 QR A86114 116 liBRi 96 106 i IRC 124 3 BIaIe Tpactort2 5 12 6 15O 5354 63 64 ORISH 3 Blade Pusher 63ST JOHN BROS INDIANA 46373 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNS42Boeing P36A$14 See no, ie45Boeing F4B3P12 $9 36Fokke Tipo ORi 5747Ce Book P6 E$15 38Col R Sped XOI $1047GohoeI F1JC5$15 39Col B Ninepn1 12 $947CrlC IlelIdne$11 O Pep 5848Glen Gledielo$10 08 Senel Bee II $949SI Keydol 9T17$10 FB12B&C $1150PeIiI Fl 9-6$10 II Onnel $98Slinnen OW SB$18 90995Mo1n po7F1 $1157Ce$lEPolnon$15 MBl $1457Ce SO3C 1 Son$14 57 InAne TeinTeiI$958 BoeingB9Benbe$9 61 AEG GIV Bonibe $13 60 Deen 038 000 $13 —Y66 Cnn 03 Ben 811 $1063 GSkynnknlFSFl $14 107 Mn1n MEl$2087 Lind tnl Siin $13 0peSpilEo $13 MANY MANY MORE 48 Mo lOSE fy814 ss NAM 835 $30 25e 80 $25 50 Hedon Benb, $15 71 onegeoscsoss * 50 Elk Widen P51 $19 77 Boo B 17G Tn823 51BneB17GFn1$1840BOegge C78$2 51 GWiIdnelF4F3 $15 enno PASS 1 51 Jnnken JO88$10 0 $12 S6CWnhenkP4O$15 RE SBRE TO ABB2O M MnIIignn $15 FOR HANDLING & INS MODELDOMS QUICKEST MB Right Louis Garamis immortal Stratostreak built author kit Cal Aero Its scaled-down old-timer 02 power Above Playboy Senior 36 span 02 Cal Aero will drop out busi ness soon stock kits gone Treat yourself l FF Duration/Meuser continued page 39 class Bob Oslan operates under name Cal Aero kits sold world-wide classy ads sees would assume business better ever according Bob Sales have fallen off has decided drop out busi ness still has few hundred kits hand gone thats Its darned shame kits excellent quality models inexpensive small enough store anywhere fall together kit no time Strato-Streak stands eloquent testimony fact idiot can adjust fly reasonably well small models can survive numerous fullpower crashes zero damage scientific circles known beetle elephant effect Drop beetle altitude ten times its length onto floor have puzzled somewhat amused very live beetle Drop elephant Onto floor altitude ten times its length have instant elephanthurger Further 020-Old-Timers excellent vehicles some smaller electric propul sion units Strato-Streak flies docilely Mattel unitnow marketed Monogram will VTO easily VL-Products Hytork 48 propulsion unit have also used wing tail Coupe dHiver model flew well its short glorious life really wonder whether some super-sophisticated designs see worth trouble insisted flying right-right always leads disaster So want try Oh-Too Oh-Tee better hurry Bob still has few kits dealer cant supply write Cal Aero 7142 Bluesails Dr Huntington Beach Calif 92647 price list Plastic Props Bunch Peck-Polymers line plastic props rubber-power models now extends 4 9 diameters Com paring props equal diameter find P-P props bit heavier have wider blades North Pacific brand props smid gin lighter Kaysun props 4 incher intended 13-inch-span Peanut Scale models 9 should great scale sport competition models having wingspans large 36 Recall AMA competition rules permit store-bought plastic props rubber-power events following table includes data meas urements made Nominal diam 4-3/4 6 7 8 9-1/2 Measured diem 4-11/16 5-15/16 7 7-13/16 9-3/8 Pitch Pitch Weqht Blade Price Diam gruns Width 64142007515c 58102208825c 42113010230c 70094811840c 77086714450c dimensions indies minimum order $198 postage handling charge 10% suggest write catalog get straight Catalog price 25 Peck-Polymers P0 Box 2498 La Mesa CA 92041 Ruff-Stuff This new sheet sandpaper pressure-sensitive backing enables customize special sanding shapeslike flat square rectangular sanding boards long sanding sticks special shapes shown illustrationwithout muss fuss glu ing sandpaper sending blocks adheres metal plastic wood glass other materials Simply cut fit peel stickfor instant use Blocks reuseablejust peel apply new Ruff-Stuff medium fine superfine grits Available dealer $39 per 9 x 11 sheet $250 6 sheets Allied Design Corp 5531 Shoreview Dr. Palos Verdes Peninsula Calif 90274 76 Model Aviation