Free Flight DURA TION Bob Meuser IF YOU WERE TO ASK whats handiest often-used indispensable tool messy totally disorganized shop Id have say its jug gives instant one-hand access virtually unlimited supply Meusers Patent Elixir Thinner Universal Solvent cleaning softening dope brushes diluting whatever Im using needs bit dilut ing One-hand key-word no monkeybiz laying down what Im holding obverse hand order use both hands unscrew lid gallon can since Elixir adhoc combination solvent thinner known modern ancient man beast will dilute dissolve anything town except perhaps glass jar contains Id swear sometimes gets mite limp previous two-stage version Mk consisted Skippys peanut jar circa 1962 can precisely fit over what known trade tunking fit Mark version sur vived 19 years before crashing onto concrete spattering glass elixir over place dog couple total strangers Mark II version takes two cans plus glass jar wasnt lucky finding things fit closely new feature outer can epoxied heavy piece metal ensure will survive 19 years time around During long hot summer third contents will evaporate its best used well-ventilated shop Mine wellventilated hasnt always way boards just keep falling off Montreal other stops revisited Last month presented Roger Gregorys rendition classic Montreal stop Rubber-Powered models Like venerable tension stop pre vents motor going completely slack also stops prop definite position blades fold properly However unlike tension stop Montreal stop responds motor torque rather tension must some friction Montreal stop wont work too much friction produced grain sand between sliding parts can prevent working Some Israeli Wakefielders no strangers flying sandy sites neatly enclose works spinner also have things arranged spinner pops back contact nose block thing locks pre venting sand getting route opposite philosophy have works exposed Rogers version almost sure get dirty same token easily cleaned checked About decade ago Hank Cole invented torque-responsive stop quite different Montreal stop thing rotary motion rather sliding motion employed more tolerant sand works doesnt depend friction Instead torque results force fights safety-pintype spring very direct way motor torque poops out spring force overcomes torque-produced force allowing hook hub engage loop nose block version shown drawing Hanks second cobbled up half-hour conventional Wakeftelds original version made music wire brass tubing Hanks typical style combined variable-pitch mechanism miscellaneous other featureshe used pusher flew Albuquerque FAI team finals Bob White adapted Coles mechanism typical style making things has using years production model Bobs version produced Simplex shown second illustration some photos rm sure whether Coles Whites works way several have built got fringe benefit form hold feature hook engaged motor fully wound prop stays locked can use prop-holding hand something important like scratching something itches want launch model simply grasp prop turn against motor torque hook releases end hook must shaped just right scheme work reliably kit stop made John Morrills company Simplex Miniature Engines 143 Rich mond St El Segundo CA 90245 sells $15 plus 50I postage also available Che Hobbies Mike Mulligans Oldtimer Models Jim Crockett Replicas Campbells Custom Kits addresses cottageindustry folks can found directory last printed May June 1981 issues Model Aviation companies have lots good EF stuff might want write catalogs Pop-off-wing D/T update Rememberthatsnaz zy D/T system invented reinvented 60 Model Aviation Hugo Moran Mexico City winds P-30 81 US FF Champs Mexican contingent improving rapidly Rubber-power events Meuser photo Parker McOuown launches Coot Indoor HLG Taftgym Luckyfliers get model between trusses First Frisbiesnow comes Toobee WOuld believe its made top 1/3 aluminum drink can Toflyone give ita roll ing snaptoss forward Watch out reallytravels Some gift specialty shops carry themoryou can cobble-up own Store-bought ones have dull rolled TE II14IATCHED TOSQUR ON lATCHED TORQUE 0? version Cole stop designed Bob White produced kit form Simplex Mini ature Engines See column details George Xenakis presented back August 1981 issue wing pops off de thermalize model stays connected rest model nylon string George connects string tip connected tip-dihedral rib hoping little auto giro action flailing wing slow descent Charlie Sotich tried scheme attached line IE center wing have sneaking hunch rate descent can controlled way nose cruching fast too slow strong thermal example sort kite-type bridle positions line attachment point smack middle both chord span might turn flailing wing near-perfect autogiro rotor would entirely defeat purpose P 30 model might just thing model higher wing loading point can probably tune things get rate descent like problem both George noticed apparently wing disposed taking smart whack rudder its way aft judging nicks LE fin decided simply live problem George decided solve problem Youd never guess moved rudder bottom Seredinskv foil revisited received tantalizing 44jiFk IJ ers handy bench-top Universal Elixir Holdera result two decades R&Dl inner glass jar holds elixir inner can merely cover keeps goop evaporating too fast outer can affixed heavy basekeeps inner containers place 3rin8 4 turns O02wire- v/V SiDE kv i VIEW FRONT VIEWS jVA W / VvWNk Motor 4 t r nLari wound unwound Hank Cole devised Rubber prop-stop years ago works motor torque tension entirely different Montreal stop portrayed last month Arm prop shaft works against spring-loaded catch-lever long motor has enough torque overcome coil spring Continued page 145 catch-lever held away nose-plug-mounted catch-hook Works well easy make August 1982 61 y Heres kit Simplex/White prop stop pieces shown Jim Crocket Replicas rubber-hook separate item though 4E*SE5a KITS 1/4 SCALE SEMI KIT13900 1/4 SCALE COMPLETE KIT. 19900 1/3 SCALE SEMI KIT16900 1/3 SCALE COMPLETE KIT.22900 PLEASE ADD $750 FOR SHIPPING i/4 3CALE SPAN 80 WEIGHT 201 ENGINE QUADRA 1/3 SCALE SPAN 106 WEIGHT 781 ENGINE QUADRA SEMI 51113 CONTAIN SAWED AND SANDED FORNERS WALL WING RIBS TIPS RUDDER AND STAB OUTLINED SIZE PLAPS CPLETE KItS CONTAIN THE ADOYR PARTS ALL PINE AND BALSA STRIP WOOD WARE SEND *1 00 FOR OUR OWIPLETE CATALOG PHDNE 1419 599-2121 proofer has used case all-sheet profile models very simple build can easily decorated felt-tip pens excellent projects begin ners just getting powered Free Flight models Holding motor prop Fig 4 shows three basic ways support rubber motor model 1 hole fuselage 2 motor stick 3 motor tube classic most-used scheme hole fuselage method best suited forthe all-sheet balsa model fuselage rigid enough support fully wound motor weaker construction used such very thin sheet balsa foam built-up structure motor stick motor tube will required support pull fully wound motor motor stick can simple piece 3/32 3/16 balsa very lightweight models can small rolled tube 1/32 1/64 balsa Ia Indoor practice rubber motor also can fully enclosed fairly large diameter tube built part fuselage Such motor tube should least -in diameter provide sutlicient clear ance unwinding rubber motor tube can made wrapping 1/32 1/64 balsa several layers paper around dowel Attaching prop Fig 5 shows different types prop bearings used motor sticks Remember trying new novel design allowance should made easy thrust-line adjustments fixed thrust bearings have cut off re-glued time thrust line changed sample proflle design build would like try practice profile model full-size plans provided 6-in-span version experimental Japanese Navy fighter Kyushu Shinden Construction built-up tissuecovered variety plans indicate CG. incidence thrust adjustments have worked models Flights over two minutes possible little bird Give try see can find other better trim settings Best luck new flight test tools FF Duration/Meuser Continued page 67 note Bill Bogart seems friend Bills dredged up report written Seredinsky both friend Seredinsky work ing Grumman So far have title page interior page Bill thought might find interesting shows airfoil cross sections labeled Modifications Airfoil Se 4410 first four sections original 1% LE radius modified version 3% nose radius turbulator wire ahead foil apparently something like sand stuck top surface over first 20% chord Number five now-familiar flamingo foil Also shown CL-vs-CD polars five sections derived model flight tests Reynolds-number range 45 000 tO 30000 Thtts live curves seem little /on smooth no experimental points arc shown makes feel little uneasy nevertheless. Worst hunch wis 3%-nose oh Ahie leg upwas un-modded Se 4410 1% nose came sandy surface mod original foil turbulator % diameter situated 7% ahead L E roughly 1% above bottom-surface chord line Best bunch flamingo its Hobby Shack RADIO RIOT BA 6 channel w/4 Ca 5-26 ser vos tull Ni Cd & char9er z9$16995 LIST $30995 5 channel w/4 ea S-26 ser vos dual rates full Ni-Cd LIST $27995 $15499 6 channel w/2dual rates 6 servos reversing switches 1ST $34995 U name3 U address cityU U statezip3 U mail order catalogs 18480 BANDILIER CIRCLE U FOUNTAIN VALLEY CA 928708 POSTAGE AND HANDLING CHARGES 3 $000 $2500 add $300 $2501 $5000 add $400 U Over $5000 add $500 California residents add 6% state sales tax mminmin August1982 145 kYShaCI CIRRUS I850 XLC system w/4 Lw OEft6N 649 APPIAN NAPOLEON OHIO 43545 SOMERS RC CLUBS 4th Annual MAMMOTH SCALE FLY-IN Premier Northeast Event 0 Join us great weekend super Aircraft lots Flying terrific Pilots warm camaraderie marvelous flying site smooth organization yours enjoy Fun Event spectators flyers alike EVENTS Best Craftsmanship Most Realistic Flight Pilots Choice August 7th & 8th 1982 Somers RC Flying Field 20 miles north White Plains New York off 1-684 exit 6 signs field AMA/FCC required Pre-registration fee $1000 $1500 site sanctioned event pre-registration further information contact Jay Wm Cox tainside Trail Peekskill New York 10566 914 739-6024 07% LE radius basic foil looks some thing like thinned-down RAF-32 Eiffel 400 things report says Edited Dr Raspet Mississippi State College about good can get credentials-wise Gus Raspet heroes having done really fine work low-Reynolds-number aero dynamics especially aerodynamic char acteristics soaring birds got wiped out glider crash recall Maybe well get root Seredinsky business yet Bill has offered loan copy report Ill get back whatever seems interesting Stay tuned OK Toobee Toobeethe thinking mans Frisbee fd seen Toobee telly local news publications conjured up some youngsters Berkeley built machines neatly cut cans roll edges print flying instructions inside can Thrown bit spin goes quite distance have onebut try find Finally bumbled basketful nicky-nacky giftee shoppee some tourist-trap up coast exchanged required coin-of-the-realm pair proceeded back Heritage House scene movie Same Time Next Year test flight lawn holed up wasnt trespassing fellow strolling past remarked wife Imag ine grown man throwing around piece old beer can Quick whip countered Thats good part bad part grown man paying $189 piece old beer can empty can whittle out yourself course sharp edges tend get blood carpet CG has come out about 25% chord might have imagined So whats got Free Flight model aviation Well flies doesnt carry person no strings radio Smatter aintcha ever seen spin-stabilized axisymmetric hand-launch glider before Bob Meuser 4200 Gregory St OaklantL CA 94619 FF Scale/Warner Continued page 63 should matter importance gesture bringing craft yet know joys flying model airplanes Just case moved get involved great group call Karl Spielmaker 616 538-3077 Yes fly Rubber Scale Websters New Collegiate Dictionary defines warp change form ofa wing twisting Warping sometimes used maintain lateral equilibrium airplane experience warps commonly mess up lateral equilibrium well longitudinal models way maintain equilibrium un-warping dam things Give flat wing stab old day hear shout about washin fight torque-effect washed-out tips minimize tip stall Well youre far skip rest column going learn build flat today Walt Mooney opines 90% crashes could prevented moving CG forward increasing angular difference between wing tailplane other 10% can probably prevented just building flat ie unintended warps Building warpless structures light enough fly well art few tips maybe use include building flat surface making sure parts fit together nicely bending L E T E get rib fit gluing stress selecting B- C-grain wood strong enough resist twists heavy produce structure will have fly fast just stay air Small warps become dangerous speed increases Two master modelers Phil Cox Highland IN Cliff McBaine LaHabra CA would like share some methods nonwarping surfaces Phil states proper wood selection placing sufficient gussets wing spars etc can make difference addition Phil emphasizes importance laying 146 Model Aviation 149 9 7EVGLOW 7Iireb cr11 PLUGS 0 Blow Proof Seal eSix Types 3 Heat Ranges S Longer Life Flash Starting Only $120 SWANSON PO Box 151 Since 1948 Wayne NJ 07470 TOMMYCAT To$9950 5642 564 LoydHarborSq swftd*g wer THE COSMO 0 COVERfl0E ftf HrwImm PA 11743
Edition: Model Aviation - 1982/08
Page Numbers: 60, 61, 145, 146
Free Flight DURA TION Bob Meuser IF YOU WERE TO ASK whats handiest often-used indispensable tool messy totally disorganized shop Id have say its jug gives instant one-hand access virtually unlimited supply Meusers Patent Elixir Thinner Universal Solvent cleaning softening dope brushes diluting whatever Im using needs bit dilut ing One-hand key-word no monkeybiz laying down what Im holding obverse hand order use both hands unscrew lid gallon can since Elixir adhoc combination solvent thinner known modern ancient man beast will dilute dissolve anything town except perhaps glass jar contains Id swear sometimes gets mite limp previous two-stage version Mk consisted Skippys peanut jar circa 1962 can precisely fit over what known trade tunking fit Mark version sur vived 19 years before crashing onto concrete spattering glass elixir over place dog couple total strangers Mark II version takes two cans plus glass jar wasnt lucky finding things fit closely new feature outer can epoxied heavy piece metal ensure will survive 19 years time around During long hot summer third contents will evaporate its best used well-ventilated shop Mine wellventilated hasnt always way boards just keep falling off Montreal other stops revisited Last month presented Roger Gregorys rendition classic Montreal stop Rubber-Powered models Like venerable tension stop pre vents motor going completely slack also stops prop definite position blades fold properly However unlike tension stop Montreal stop responds motor torque rather tension must some friction Montreal stop wont work too much friction produced grain sand between sliding parts can prevent working Some Israeli Wakefielders no strangers flying sandy sites neatly enclose works spinner also have things arranged spinner pops back contact nose block thing locks pre venting sand getting route opposite philosophy have works exposed Rogers version almost sure get dirty same token easily cleaned checked About decade ago Hank Cole invented torque-responsive stop quite different Montreal stop thing rotary motion rather sliding motion employed more tolerant sand works doesnt depend friction Instead torque results force fights safety-pintype spring very direct way motor torque poops out spring force overcomes torque-produced force allowing hook hub engage loop nose block version shown drawing Hanks second cobbled up half-hour conventional Wakeftelds original version made music wire brass tubing Hanks typical style combined variable-pitch mechanism miscellaneous other featureshe used pusher flew Albuquerque FAI team finals Bob White adapted Coles mechanism typical style making things has using years production model Bobs version produced Simplex shown second illustration some photos rm sure whether Coles Whites works way several have built got fringe benefit form hold feature hook engaged motor fully wound prop stays locked can use prop-holding hand something important like scratching something itches want launch model simply grasp prop turn against motor torque hook releases end hook must shaped just right scheme work reliably kit stop made John Morrills company Simplex Miniature Engines 143 Rich mond St El Segundo CA 90245 sells $15 plus 50I postage also available Che Hobbies Mike Mulligans Oldtimer Models Jim Crockett Replicas Campbells Custom Kits addresses cottageindustry folks can found directory last printed May June 1981 issues Model Aviation companies have lots good EF stuff might want write catalogs Pop-off-wing D/T update Rememberthatsnaz zy D/T system invented reinvented 60 Model Aviation Hugo Moran Mexico City winds P-30 81 US FF Champs Mexican contingent improving rapidly Rubber-power events Meuser photo Parker McOuown launches Coot Indoor HLG Taftgym Luckyfliers get model between trusses First Frisbiesnow comes Toobee WOuld believe its made top 1/3 aluminum drink can Toflyone give ita roll ing snaptoss forward Watch out reallytravels Some gift specialty shops carry themoryou can cobble-up own Store-bought ones have dull rolled TE II14IATCHED TOSQUR ON lATCHED TORQUE 0? version Cole stop designed Bob White produced kit form Simplex Mini ature Engines See column details George Xenakis presented back August 1981 issue wing pops off de thermalize model stays connected rest model nylon string George connects string tip connected tip-dihedral rib hoping little auto giro action flailing wing slow descent Charlie Sotich tried scheme attached line IE center wing have sneaking hunch rate descent can controlled way nose cruching fast too slow strong thermal example sort kite-type bridle positions line attachment point smack middle both chord span might turn flailing wing near-perfect autogiro rotor would entirely defeat purpose P 30 model might just thing model higher wing loading point can probably tune things get rate descent like problem both George noticed apparently wing disposed taking smart whack rudder its way aft judging nicks LE fin decided simply live problem George decided solve problem Youd never guess moved rudder bottom Seredinskv foil revisited received tantalizing 44jiFk IJ ers handy bench-top Universal Elixir Holdera result two decades R&Dl inner glass jar holds elixir inner can merely cover keeps goop evaporating too fast outer can affixed heavy basekeeps inner containers place 3rin8 4 turns O02wire- v/V SiDE kv i VIEW FRONT VIEWS jVA W / VvWNk Motor 4 t r nLari wound unwound Hank Cole devised Rubber prop-stop years ago works motor torque tension entirely different Montreal stop portrayed last month Arm prop shaft works against spring-loaded catch-lever long motor has enough torque overcome coil spring Continued page 145 catch-lever held away nose-plug-mounted catch-hook Works well easy make August 1982 61 y Heres kit Simplex/White prop stop pieces shown Jim Crocket Replicas rubber-hook separate item though 4E*SE5a KITS 1/4 SCALE SEMI KIT13900 1/4 SCALE COMPLETE KIT. 19900 1/3 SCALE SEMI KIT16900 1/3 SCALE COMPLETE KIT.22900 PLEASE ADD $750 FOR SHIPPING i/4 3CALE SPAN 80 WEIGHT 201 ENGINE QUADRA 1/3 SCALE SPAN 106 WEIGHT 781 ENGINE QUADRA SEMI 51113 CONTAIN SAWED AND SANDED FORNERS WALL WING RIBS TIPS RUDDER AND STAB OUTLINED SIZE PLAPS CPLETE KItS CONTAIN THE ADOYR PARTS ALL PINE AND BALSA STRIP WOOD WARE SEND *1 00 FOR OUR OWIPLETE CATALOG PHDNE 1419 599-2121 proofer has used case all-sheet profile models very simple build can easily decorated felt-tip pens excellent projects begin ners just getting powered Free Flight models Holding motor prop Fig 4 shows three basic ways support rubber motor model 1 hole fuselage 2 motor stick 3 motor tube classic most-used scheme hole fuselage method best suited forthe all-sheet balsa model fuselage rigid enough support fully wound motor weaker construction used such very thin sheet balsa foam built-up structure motor stick motor tube will required support pull fully wound motor motor stick can simple piece 3/32 3/16 balsa very lightweight models can small rolled tube 1/32 1/64 balsa Ia Indoor practice rubber motor also can fully enclosed fairly large diameter tube built part fuselage Such motor tube should least -in diameter provide sutlicient clear ance unwinding rubber motor tube can made wrapping 1/32 1/64 balsa several layers paper around dowel Attaching prop Fig 5 shows different types prop bearings used motor sticks Remember trying new novel design allowance should made easy thrust-line adjustments fixed thrust bearings have cut off re-glued time thrust line changed sample proflle design build would like try practice profile model full-size plans provided 6-in-span version experimental Japanese Navy fighter Kyushu Shinden Construction built-up tissuecovered variety plans indicate CG. incidence thrust adjustments have worked models Flights over two minutes possible little bird Give try see can find other better trim settings Best luck new flight test tools FF Duration/Meuser Continued page 67 note Bill Bogart seems friend Bills dredged up report written Seredinsky both friend Seredinsky work ing Grumman So far have title page interior page Bill thought might find interesting shows airfoil cross sections labeled Modifications Airfoil Se 4410 first four sections original 1% LE radius modified version 3% nose radius turbulator wire ahead foil apparently something like sand stuck top surface over first 20% chord Number five now-familiar flamingo foil Also shown CL-vs-CD polars five sections derived model flight tests Reynolds-number range 45 000 tO 30000 Thtts live curves seem little /on smooth no experimental points arc shown makes feel little uneasy nevertheless. Worst hunch wis 3%-nose oh Ahie leg upwas un-modded Se 4410 1% nose came sandy surface mod original foil turbulator % diameter situated 7% ahead L E roughly 1% above bottom-surface chord line Best bunch flamingo its Hobby Shack RADIO RIOT BA 6 channel w/4 Ca 5-26 ser vos tull Ni Cd & char9er z9$16995 LIST $30995 5 channel w/4 ea S-26 ser vos dual rates full Ni-Cd LIST $27995 $15499 6 channel w/2dual rates 6 servos reversing switches 1ST $34995 U name3 U address cityU U statezip3 U mail order catalogs 18480 BANDILIER CIRCLE U FOUNTAIN VALLEY CA 928708 POSTAGE AND HANDLING CHARGES 3 $000 $2500 add $300 $2501 $5000 add $400 U Over $5000 add $500 California residents add 6% state sales tax mminmin August1982 145 kYShaCI CIRRUS I850 XLC system w/4 Lw OEft6N 649 APPIAN NAPOLEON OHIO 43545 SOMERS RC CLUBS 4th Annual MAMMOTH SCALE FLY-IN Premier Northeast Event 0 Join us great weekend super Aircraft lots Flying terrific Pilots warm camaraderie marvelous flying site smooth organization yours enjoy Fun Event spectators flyers alike EVENTS Best Craftsmanship Most Realistic Flight Pilots Choice August 7th & 8th 1982 Somers RC Flying Field 20 miles north White Plains New York off 1-684 exit 6 signs field AMA/FCC required Pre-registration fee $1000 $1500 site sanctioned event pre-registration further information contact Jay Wm Cox tainside Trail Peekskill New York 10566 914 739-6024 07% LE radius basic foil looks some thing like thinned-down RAF-32 Eiffel 400 things report says Edited Dr Raspet Mississippi State College about good can get credentials-wise Gus Raspet heroes having done really fine work low-Reynolds-number aero dynamics especially aerodynamic char acteristics soaring birds got wiped out glider crash recall Maybe well get root Seredinsky business yet Bill has offered loan copy report Ill get back whatever seems interesting Stay tuned OK Toobee Toobeethe thinking mans Frisbee fd seen Toobee telly local news publications conjured up some youngsters Berkeley built machines neatly cut cans roll edges print flying instructions inside can Thrown bit spin goes quite distance have onebut try find Finally bumbled basketful nicky-nacky giftee shoppee some tourist-trap up coast exchanged required coin-of-the-realm pair proceeded back Heritage House scene movie Same Time Next Year test flight lawn holed up wasnt trespassing fellow strolling past remarked wife Imag ine grown man throwing around piece old beer can Quick whip countered Thats good part bad part grown man paying $189 piece old beer can empty can whittle out yourself course sharp edges tend get blood carpet CG has come out about 25% chord might have imagined So whats got Free Flight model aviation Well flies doesnt carry person no strings radio Smatter aintcha ever seen spin-stabilized axisymmetric hand-launch glider before Bob Meuser 4200 Gregory St OaklantL CA 94619 FF Scale/Warner Continued page 63 should matter importance gesture bringing craft yet know joys flying model airplanes Just case moved get involved great group call Karl Spielmaker 616 538-3077 Yes fly Rubber Scale Websters New Collegiate Dictionary defines warp change form ofa wing twisting Warping sometimes used maintain lateral equilibrium airplane experience warps commonly mess up lateral equilibrium well longitudinal models way maintain equilibrium un-warping dam things Give flat wing stab old day hear shout about washin fight torque-effect washed-out tips minimize tip stall Well youre far skip rest column going learn build flat today Walt Mooney opines 90% crashes could prevented moving CG forward increasing angular difference between wing tailplane other 10% can probably prevented just building flat ie unintended warps Building warpless structures light enough fly well art few tips maybe use include building flat surface making sure parts fit together nicely bending L E T E get rib fit gluing stress selecting B- C-grain wood strong enough resist twists heavy produce structure will have fly fast just stay air Small warps become dangerous speed increases Two master modelers Phil Cox Highland IN Cliff McBaine LaHabra CA would like share some methods nonwarping surfaces Phil states proper wood selection placing sufficient gussets wing spars etc can make difference addition Phil emphasizes importance laying 146 Model Aviation 149 9 7EVGLOW 7Iireb cr11 PLUGS 0 Blow Proof Seal eSix Types 3 Heat Ranges S Longer Life Flash Starting Only $120 SWANSON PO Box 151 Since 1948 Wayne NJ 07470 TOMMYCAT To$9950 5642 564 LoydHarborSq swftd*g wer THE COSMO 0 COVERfl0E ftf HrwImm PA 11743
Edition: Model Aviation - 1982/08
Page Numbers: 60, 61, 145, 146
Free Flight DURA TION Bob Meuser IF YOU WERE TO ASK whats handiest often-used indispensable tool messy totally disorganized shop Id have say its jug gives instant one-hand access virtually unlimited supply Meusers Patent Elixir Thinner Universal Solvent cleaning softening dope brushes diluting whatever Im using needs bit dilut ing One-hand key-word no monkeybiz laying down what Im holding obverse hand order use both hands unscrew lid gallon can since Elixir adhoc combination solvent thinner known modern ancient man beast will dilute dissolve anything town except perhaps glass jar contains Id swear sometimes gets mite limp previous two-stage version Mk consisted Skippys peanut jar circa 1962 can precisely fit over what known trade tunking fit Mark version sur vived 19 years before crashing onto concrete spattering glass elixir over place dog couple total strangers Mark II version takes two cans plus glass jar wasnt lucky finding things fit closely new feature outer can epoxied heavy piece metal ensure will survive 19 years time around During long hot summer third contents will evaporate its best used well-ventilated shop Mine wellventilated hasnt always way boards just keep falling off Montreal other stops revisited Last month presented Roger Gregorys rendition classic Montreal stop Rubber-Powered models Like venerable tension stop pre vents motor going completely slack also stops prop definite position blades fold properly However unlike tension stop Montreal stop responds motor torque rather tension must some friction Montreal stop wont work too much friction produced grain sand between sliding parts can prevent working Some Israeli Wakefielders no strangers flying sandy sites neatly enclose works spinner also have things arranged spinner pops back contact nose block thing locks pre venting sand getting route opposite philosophy have works exposed Rogers version almost sure get dirty same token easily cleaned checked About decade ago Hank Cole invented torque-responsive stop quite different Montreal stop thing rotary motion rather sliding motion employed more tolerant sand works doesnt depend friction Instead torque results force fights safety-pintype spring very direct way motor torque poops out spring force overcomes torque-produced force allowing hook hub engage loop nose block version shown drawing Hanks second cobbled up half-hour conventional Wakeftelds original version made music wire brass tubing Hanks typical style combined variable-pitch mechanism miscellaneous other featureshe used pusher flew Albuquerque FAI team finals Bob White adapted Coles mechanism typical style making things has using years production model Bobs version produced Simplex shown second illustration some photos rm sure whether Coles Whites works way several have built got fringe benefit form hold feature hook engaged motor fully wound prop stays locked can use prop-holding hand something important like scratching something itches want launch model simply grasp prop turn against motor torque hook releases end hook must shaped just right scheme work reliably kit stop made John Morrills company Simplex Miniature Engines 143 Rich mond St El Segundo CA 90245 sells $15 plus 50I postage also available Che Hobbies Mike Mulligans Oldtimer Models Jim Crockett Replicas Campbells Custom Kits addresses cottageindustry folks can found directory last printed May June 1981 issues Model Aviation companies have lots good EF stuff might want write catalogs Pop-off-wing D/T update Rememberthatsnaz zy D/T system invented reinvented 60 Model Aviation Hugo Moran Mexico City winds P-30 81 US FF Champs Mexican contingent improving rapidly Rubber-power events Meuser photo Parker McOuown launches Coot Indoor HLG Taftgym Luckyfliers get model between trusses First Frisbiesnow comes Toobee WOuld believe its made top 1/3 aluminum drink can Toflyone give ita roll ing snaptoss forward Watch out reallytravels Some gift specialty shops carry themoryou can cobble-up own Store-bought ones have dull rolled TE II14IATCHED TOSQUR ON lATCHED TORQUE 0? version Cole stop designed Bob White produced kit form Simplex Mini ature Engines See column details George Xenakis presented back August 1981 issue wing pops off de thermalize model stays connected rest model nylon string George connects string tip connected tip-dihedral rib hoping little auto giro action flailing wing slow descent Charlie Sotich tried scheme attached line IE center wing have sneaking hunch rate descent can controlled way nose cruching fast too slow strong thermal example sort kite-type bridle positions line attachment point smack middle both chord span might turn flailing wing near-perfect autogiro rotor would entirely defeat purpose P 30 model might just thing model higher wing loading point can probably tune things get rate descent like problem both George noticed apparently wing disposed taking smart whack rudder its way aft judging nicks LE fin decided simply live problem George decided solve problem Youd never guess moved rudder bottom Seredinskv foil revisited received tantalizing 44jiFk IJ ers handy bench-top Universal Elixir Holdera result two decades R&Dl inner glass jar holds elixir inner can merely cover keeps goop evaporating too fast outer can affixed heavy basekeeps inner containers place 3rin8 4 turns O02wire- v/V SiDE kv i VIEW FRONT VIEWS jVA W / VvWNk Motor 4 t r nLari wound unwound Hank Cole devised Rubber prop-stop years ago works motor torque tension entirely different Montreal stop portrayed last month Arm prop shaft works against spring-loaded catch-lever long motor has enough torque overcome coil spring Continued page 145 catch-lever held away nose-plug-mounted catch-hook Works well easy make August 1982 61 y Heres kit Simplex/White prop stop pieces shown Jim Crocket Replicas rubber-hook separate item though 4E*SE5a KITS 1/4 SCALE SEMI KIT13900 1/4 SCALE COMPLETE KIT. 19900 1/3 SCALE SEMI KIT16900 1/3 SCALE COMPLETE KIT.22900 PLEASE ADD $750 FOR SHIPPING i/4 3CALE SPAN 80 WEIGHT 201 ENGINE QUADRA 1/3 SCALE SPAN 106 WEIGHT 781 ENGINE QUADRA SEMI 51113 CONTAIN SAWED AND SANDED FORNERS WALL WING RIBS TIPS RUDDER AND STAB OUTLINED SIZE PLAPS CPLETE KItS CONTAIN THE ADOYR PARTS ALL PINE AND BALSA STRIP WOOD WARE SEND *1 00 FOR OUR OWIPLETE CATALOG PHDNE 1419 599-2121 proofer has used case all-sheet profile models very simple build can easily decorated felt-tip pens excellent projects begin ners just getting powered Free Flight models Holding motor prop Fig 4 shows three basic ways support rubber motor model 1 hole fuselage 2 motor stick 3 motor tube classic most-used scheme hole fuselage method best suited forthe all-sheet balsa model fuselage rigid enough support fully wound motor weaker construction used such very thin sheet balsa foam built-up structure motor stick motor tube will required support pull fully wound motor motor stick can simple piece 3/32 3/16 balsa very lightweight models can small rolled tube 1/32 1/64 balsa Ia Indoor practice rubber motor also can fully enclosed fairly large diameter tube built part fuselage Such motor tube should least -in diameter provide sutlicient clear ance unwinding rubber motor tube can made wrapping 1/32 1/64 balsa several layers paper around dowel Attaching prop Fig 5 shows different types prop bearings used motor sticks Remember trying new novel design allowance should made easy thrust-line adjustments fixed thrust bearings have cut off re-glued time thrust line changed sample proflle design build would like try practice profile model full-size plans provided 6-in-span version experimental Japanese Navy fighter Kyushu Shinden Construction built-up tissuecovered variety plans indicate CG. incidence thrust adjustments have worked models Flights over two minutes possible little bird Give try see can find other better trim settings Best luck new flight test tools FF Duration/Meuser Continued page 67 note Bill Bogart seems friend Bills dredged up report written Seredinsky both friend Seredinsky work ing Grumman So far have title page interior page Bill thought might find interesting shows airfoil cross sections labeled Modifications Airfoil Se 4410 first four sections original 1% LE radius modified version 3% nose radius turbulator wire ahead foil apparently something like sand stuck top surface over first 20% chord Number five now-familiar flamingo foil Also shown CL-vs-CD polars five sections derived model flight tests Reynolds-number range 45 000 tO 30000 Thtts live curves seem little /on smooth no experimental points arc shown makes feel little uneasy nevertheless. Worst hunch wis 3%-nose oh Ahie leg upwas un-modded Se 4410 1% nose came sandy surface mod original foil turbulator % diameter situated 7% ahead L E roughly 1% above bottom-surface chord line Best bunch flamingo its Hobby Shack RADIO RIOT BA 6 channel w/4 Ca 5-26 ser vos tull Ni Cd & char9er z9$16995 LIST $30995 5 channel w/4 ea S-26 ser vos dual rates full Ni-Cd LIST $27995 $15499 6 channel w/2dual rates 6 servos reversing switches 1ST $34995 U name3 U address cityU U statezip3 U mail order catalogs 18480 BANDILIER CIRCLE U FOUNTAIN VALLEY CA 928708 POSTAGE AND HANDLING CHARGES 3 $000 $2500 add $300 $2501 $5000 add $400 U Over $5000 add $500 California residents add 6% state sales tax mminmin August1982 145 kYShaCI CIRRUS I850 XLC system w/4 Lw OEft6N 649 APPIAN NAPOLEON OHIO 43545 SOMERS RC CLUBS 4th Annual MAMMOTH SCALE FLY-IN Premier Northeast Event 0 Join us great weekend super Aircraft lots Flying terrific Pilots warm camaraderie marvelous flying site smooth organization yours enjoy Fun Event spectators flyers alike EVENTS Best Craftsmanship Most Realistic Flight Pilots Choice August 7th & 8th 1982 Somers RC Flying Field 20 miles north White Plains New York off 1-684 exit 6 signs field AMA/FCC required Pre-registration fee $1000 $1500 site sanctioned event pre-registration further information contact Jay Wm Cox tainside Trail Peekskill New York 10566 914 739-6024 07% LE radius basic foil looks some thing like thinned-down RAF-32 Eiffel 400 things report says Edited Dr Raspet Mississippi State College about good can get credentials-wise Gus Raspet heroes having done really fine work low-Reynolds-number aero dynamics especially aerodynamic char acteristics soaring birds got wiped out glider crash recall Maybe well get root Seredinsky business yet Bill has offered loan copy report Ill get back whatever seems interesting Stay tuned OK Toobee Toobeethe thinking mans Frisbee fd seen Toobee telly local news publications conjured up some youngsters Berkeley built machines neatly cut cans roll edges print flying instructions inside can Thrown bit spin goes quite distance have onebut try find Finally bumbled basketful nicky-nacky giftee shoppee some tourist-trap up coast exchanged required coin-of-the-realm pair proceeded back Heritage House scene movie Same Time Next Year test flight lawn holed up wasnt trespassing fellow strolling past remarked wife Imag ine grown man throwing around piece old beer can Quick whip countered Thats good part bad part grown man paying $189 piece old beer can empty can whittle out yourself course sharp edges tend get blood carpet CG has come out about 25% chord might have imagined So whats got Free Flight model aviation Well flies doesnt carry person no strings radio Smatter aintcha ever seen spin-stabilized axisymmetric hand-launch glider before Bob Meuser 4200 Gregory St OaklantL CA 94619 FF Scale/Warner Continued page 63 should matter importance gesture bringing craft yet know joys flying model airplanes Just case moved get involved great group call Karl Spielmaker 616 538-3077 Yes fly Rubber Scale Websters New Collegiate Dictionary defines warp change form ofa wing twisting Warping sometimes used maintain lateral equilibrium airplane experience warps commonly mess up lateral equilibrium well longitudinal models way maintain equilibrium un-warping dam things Give flat wing stab old day hear shout about washin fight torque-effect washed-out tips minimize tip stall Well youre far skip rest column going learn build flat today Walt Mooney opines 90% crashes could prevented moving CG forward increasing angular difference between wing tailplane other 10% can probably prevented just building flat ie unintended warps Building warpless structures light enough fly well art few tips maybe use include building flat surface making sure parts fit together nicely bending L E T E get rib fit gluing stress selecting B- C-grain wood strong enough resist twists heavy produce structure will have fly fast just stay air Small warps become dangerous speed increases Two master modelers Phil Cox Highland IN Cliff McBaine LaHabra CA would like share some methods nonwarping surfaces Phil states proper wood selection placing sufficient gussets wing spars etc can make difference addition Phil emphasizes importance laying 146 Model Aviation 149 9 7EVGLOW 7Iireb cr11 PLUGS 0 Blow Proof Seal eSix Types 3 Heat Ranges S Longer Life Flash Starting Only $120 SWANSON PO Box 151 Since 1948 Wayne NJ 07470 TOMMYCAT To$9950 5642 564 LoydHarborSq swftd*g wer THE COSMO 0 COVERfl0E ftf HrwImm PA 11743
Edition: Model Aviation - 1982/08
Page Numbers: 60, 61, 145, 146
Free Flight DURA TION Bob Meuser IF YOU WERE TO ASK whats handiest often-used indispensable tool messy totally disorganized shop Id have say its jug gives instant one-hand access virtually unlimited supply Meusers Patent Elixir Thinner Universal Solvent cleaning softening dope brushes diluting whatever Im using needs bit dilut ing One-hand key-word no monkeybiz laying down what Im holding obverse hand order use both hands unscrew lid gallon can since Elixir adhoc combination solvent thinner known modern ancient man beast will dilute dissolve anything town except perhaps glass jar contains Id swear sometimes gets mite limp previous two-stage version Mk consisted Skippys peanut jar circa 1962 can precisely fit over what known trade tunking fit Mark version sur vived 19 years before crashing onto concrete spattering glass elixir over place dog couple total strangers Mark II version takes two cans plus glass jar wasnt lucky finding things fit closely new feature outer can epoxied heavy piece metal ensure will survive 19 years time around During long hot summer third contents will evaporate its best used well-ventilated shop Mine wellventilated hasnt always way boards just keep falling off Montreal other stops revisited Last month presented Roger Gregorys rendition classic Montreal stop Rubber-Powered models Like venerable tension stop pre vents motor going completely slack also stops prop definite position blades fold properly However unlike tension stop Montreal stop responds motor torque rather tension must some friction Montreal stop wont work too much friction produced grain sand between sliding parts can prevent working Some Israeli Wakefielders no strangers flying sandy sites neatly enclose works spinner also have things arranged spinner pops back contact nose block thing locks pre venting sand getting route opposite philosophy have works exposed Rogers version almost sure get dirty same token easily cleaned checked About decade ago Hank Cole invented torque-responsive stop quite different Montreal stop thing rotary motion rather sliding motion employed more tolerant sand works doesnt depend friction Instead torque results force fights safety-pintype spring very direct way motor torque poops out spring force overcomes torque-produced force allowing hook hub engage loop nose block version shown drawing Hanks second cobbled up half-hour conventional Wakeftelds original version made music wire brass tubing Hanks typical style combined variable-pitch mechanism miscellaneous other featureshe used pusher flew Albuquerque FAI team finals Bob White adapted Coles mechanism typical style making things has using years production model Bobs version produced Simplex shown second illustration some photos rm sure whether Coles Whites works way several have built got fringe benefit form hold feature hook engaged motor fully wound prop stays locked can use prop-holding hand something important like scratching something itches want launch model simply grasp prop turn against motor torque hook releases end hook must shaped just right scheme work reliably kit stop made John Morrills company Simplex Miniature Engines 143 Rich mond St El Segundo CA 90245 sells $15 plus 50I postage also available Che Hobbies Mike Mulligans Oldtimer Models Jim Crockett Replicas Campbells Custom Kits addresses cottageindustry folks can found directory last printed May June 1981 issues Model Aviation companies have lots good EF stuff might want write catalogs Pop-off-wing D/T update Rememberthatsnaz zy D/T system invented reinvented 60 Model Aviation Hugo Moran Mexico City winds P-30 81 US FF Champs Mexican contingent improving rapidly Rubber-power events Meuser photo Parker McOuown launches Coot Indoor HLG Taftgym Luckyfliers get model between trusses First Frisbiesnow comes Toobee WOuld believe its made top 1/3 aluminum drink can Toflyone give ita roll ing snaptoss forward Watch out reallytravels Some gift specialty shops carry themoryou can cobble-up own Store-bought ones have dull rolled TE II14IATCHED TOSQUR ON lATCHED TORQUE 0? version Cole stop designed Bob White produced kit form Simplex Mini ature Engines See column details George Xenakis presented back August 1981 issue wing pops off de thermalize model stays connected rest model nylon string George connects string tip connected tip-dihedral rib hoping little auto giro action flailing wing slow descent Charlie Sotich tried scheme attached line IE center wing have sneaking hunch rate descent can controlled way nose cruching fast too slow strong thermal example sort kite-type bridle positions line attachment point smack middle both chord span might turn flailing wing near-perfect autogiro rotor would entirely defeat purpose P 30 model might just thing model higher wing loading point can probably tune things get rate descent like problem both George noticed apparently wing disposed taking smart whack rudder its way aft judging nicks LE fin decided simply live problem George decided solve problem Youd never guess moved rudder bottom Seredinskv foil revisited received tantalizing 44jiFk IJ ers handy bench-top Universal Elixir Holdera result two decades R&Dl inner glass jar holds elixir inner can merely cover keeps goop evaporating too fast outer can affixed heavy basekeeps inner containers place 3rin8 4 turns O02wire- v/V SiDE kv i VIEW FRONT VIEWS jVA W / VvWNk Motor 4 t r nLari wound unwound Hank Cole devised Rubber prop-stop years ago works motor torque tension entirely different Montreal stop portrayed last month Arm prop shaft works against spring-loaded catch-lever long motor has enough torque overcome coil spring Continued page 145 catch-lever held away nose-plug-mounted catch-hook Works well easy make August 1982 61 y Heres kit Simplex/White prop stop pieces shown Jim Crocket Replicas rubber-hook separate item though 4E*SE5a KITS 1/4 SCALE SEMI KIT13900 1/4 SCALE COMPLETE KIT. 19900 1/3 SCALE SEMI KIT16900 1/3 SCALE COMPLETE KIT.22900 PLEASE ADD $750 FOR SHIPPING i/4 3CALE SPAN 80 WEIGHT 201 ENGINE QUADRA 1/3 SCALE SPAN 106 WEIGHT 781 ENGINE QUADRA SEMI 51113 CONTAIN SAWED AND SANDED FORNERS WALL WING RIBS TIPS RUDDER AND STAB OUTLINED SIZE PLAPS CPLETE KItS CONTAIN THE ADOYR PARTS ALL PINE AND BALSA STRIP WOOD WARE SEND *1 00 FOR OUR OWIPLETE CATALOG PHDNE 1419 599-2121 proofer has used case all-sheet profile models very simple build can easily decorated felt-tip pens excellent projects begin ners just getting powered Free Flight models Holding motor prop Fig 4 shows three basic ways support rubber motor model 1 hole fuselage 2 motor stick 3 motor tube classic most-used scheme hole fuselage method best suited forthe all-sheet balsa model fuselage rigid enough support fully wound motor weaker construction used such very thin sheet balsa foam built-up structure motor stick motor tube will required support pull fully wound motor motor stick can simple piece 3/32 3/16 balsa very lightweight models can small rolled tube 1/32 1/64 balsa Ia Indoor practice rubber motor also can fully enclosed fairly large diameter tube built part fuselage Such motor tube should least -in diameter provide sutlicient clear ance unwinding rubber motor tube can made wrapping 1/32 1/64 balsa several layers paper around dowel Attaching prop Fig 5 shows different types prop bearings used motor sticks Remember trying new novel design allowance should made easy thrust-line adjustments fixed thrust bearings have cut off re-glued time thrust line changed sample proflle design build would like try practice profile model full-size plans provided 6-in-span version experimental Japanese Navy fighter Kyushu Shinden Construction built-up tissuecovered variety plans indicate CG. incidence thrust adjustments have worked models Flights over two minutes possible little bird Give try see can find other better trim settings Best luck new flight test tools FF Duration/Meuser Continued page 67 note Bill Bogart seems friend Bills dredged up report written Seredinsky both friend Seredinsky work ing Grumman So far have title page interior page Bill thought might find interesting shows airfoil cross sections labeled Modifications Airfoil Se 4410 first four sections original 1% LE radius modified version 3% nose radius turbulator wire ahead foil apparently something like sand stuck top surface over first 20% chord Number five now-familiar flamingo foil Also shown CL-vs-CD polars five sections derived model flight tests Reynolds-number range 45 000 tO 30000 Thtts live curves seem little /on smooth no experimental points arc shown makes feel little uneasy nevertheless. Worst hunch wis 3%-nose oh Ahie leg upwas un-modded Se 4410 1% nose came sandy surface mod original foil turbulator % diameter situated 7% ahead L E roughly 1% above bottom-surface chord line Best bunch flamingo its Hobby Shack RADIO RIOT BA 6 channel w/4 Ca 5-26 ser vos tull Ni Cd & char9er z9$16995 LIST $30995 5 channel w/4 ea S-26 ser vos dual rates full Ni-Cd LIST $27995 $15499 6 channel w/2dual rates 6 servos reversing switches 1ST $34995 U name3 U address cityU U statezip3 U mail order catalogs 18480 BANDILIER CIRCLE U FOUNTAIN VALLEY CA 928708 POSTAGE AND HANDLING CHARGES 3 $000 $2500 add $300 $2501 $5000 add $400 U Over $5000 add $500 California residents add 6% state sales tax mminmin August1982 145 kYShaCI CIRRUS I850 XLC system w/4 Lw OEft6N 649 APPIAN NAPOLEON OHIO 43545 SOMERS RC CLUBS 4th Annual MAMMOTH SCALE FLY-IN Premier Northeast Event 0 Join us great weekend super Aircraft lots Flying terrific Pilots warm camaraderie marvelous flying site smooth organization yours enjoy Fun Event spectators flyers alike EVENTS Best Craftsmanship Most Realistic Flight Pilots Choice August 7th & 8th 1982 Somers RC Flying Field 20 miles north White Plains New York off 1-684 exit 6 signs field AMA/FCC required Pre-registration fee $1000 $1500 site sanctioned event pre-registration further information contact Jay Wm Cox tainside Trail Peekskill New York 10566 914 739-6024 07% LE radius basic foil looks some thing like thinned-down RAF-32 Eiffel 400 things report says Edited Dr Raspet Mississippi State College about good can get credentials-wise Gus Raspet heroes having done really fine work low-Reynolds-number aero dynamics especially aerodynamic char acteristics soaring birds got wiped out glider crash recall Maybe well get root Seredinsky business yet Bill has offered loan copy report Ill get back whatever seems interesting Stay tuned OK Toobee Toobeethe thinking mans Frisbee fd seen Toobee telly local news publications conjured up some youngsters Berkeley built machines neatly cut cans roll edges print flying instructions inside can Thrown bit spin goes quite distance have onebut try find Finally bumbled basketful nicky-nacky giftee shoppee some tourist-trap up coast exchanged required coin-of-the-realm pair proceeded back Heritage House scene movie Same Time Next Year test flight lawn holed up wasnt trespassing fellow strolling past remarked wife Imag ine grown man throwing around piece old beer can Quick whip countered Thats good part bad part grown man paying $189 piece old beer can empty can whittle out yourself course sharp edges tend get blood carpet CG has come out about 25% chord might have imagined So whats got Free Flight model aviation Well flies doesnt carry person no strings radio Smatter aintcha ever seen spin-stabilized axisymmetric hand-launch glider before Bob Meuser 4200 Gregory St OaklantL CA 94619 FF Scale/Warner Continued page 63 should matter importance gesture bringing craft yet know joys flying model airplanes Just case moved get involved great group call Karl Spielmaker 616 538-3077 Yes fly Rubber Scale Websters New Collegiate Dictionary defines warp change form ofa wing twisting Warping sometimes used maintain lateral equilibrium airplane experience warps commonly mess up lateral equilibrium well longitudinal models way maintain equilibrium un-warping dam things Give flat wing stab old day hear shout about washin fight torque-effect washed-out tips minimize tip stall Well youre far skip rest column going learn build flat today Walt Mooney opines 90% crashes could prevented moving CG forward increasing angular difference between wing tailplane other 10% can probably prevented just building flat ie unintended warps Building warpless structures light enough fly well art few tips maybe use include building flat surface making sure parts fit together nicely bending L E T E get rib fit gluing stress selecting B- C-grain wood strong enough resist twists heavy produce structure will have fly fast just stay air Small warps become dangerous speed increases Two master modelers Phil Cox Highland IN Cliff McBaine LaHabra CA would like share some methods nonwarping surfaces Phil states proper wood selection placing sufficient gussets wing spars etc can make difference addition Phil emphasizes importance laying 146 Model Aviation 149 9 7EVGLOW 7Iireb cr11 PLUGS 0 Blow Proof Seal eSix Types 3 Heat Ranges S Longer Life Flash Starting Only $120 SWANSON PO Box 151 Since 1948 Wayne NJ 07470 TOMMYCAT To$9950 5642 564 LoydHarborSq swftd*g wer THE COSMO 0 COVERfl0E ftf HrwImm PA 11743