FLIGHTMASTER Cliff McBaine writes say information freewbeelers lacked very important item small bushing washer assembly soldered prop shaft behind prop take load wound tensioned rubber allows prop float free prop shaft soon driving force exhausted see sketches Care should taken keep dimension small possible limit movement shown dimension B want have 900 bend shaft miss engaging escapement interfering belt buckle certainly great idea allows keep slack up rundown braided motor Cliff prefers pre-tensioned braided since Korda method true braidingis something else again Having no pretensions great knowledge area Ill let Cliff describe method .make up motor twice desired BUSHING OR WASHER SOLDERED TO HB DISTANCE SHAFT TAKES THRUST LOAD OF RUBBER THRUST BEARING MUST BE LESS THAN B length consisting half number strands desired Put motor winding hook external apart model wind enough turns come twice distance between hooks model motor will just taut enough have slight sag take loading stick must concept put middle motor bring both ends over fasten dowel anchor other end loading stick now ready load As pretensioning method requires multiples four strands 481216 etc may suitable larger rubber ships Playing around smaller strand fl sizes will generally get motor cross section want Its always nice have spool 1-mm fine adjustments other end spectrum Ken Hamilton experimenting singlestrand motors using cyanoacrylate glue loop shut After washing rubber cut allow bit extra loop end narrows ends pointed configuration bends back over bit teflon tubing keep loop open hook drop cyanoacrylate folded-back piece makes joint will outlast adjacent motor strand Remove teflon youre business Allow ol perfesser Walt Mooney demonstrates proper launch technique Jumbo rubber Avro 0 Just geter up fiying speed No javelin throwing strange aii iearned iesson kids first rubber model now learn again Bill Noonan plc 66 Model Aviation again caution what may tend forget familiarity Cyanoacrylate glue Hot Stuff Permabond Zap etc highly effective doing what origi nally invented gluing parts human body together get tiniest drop eye will extremely painful may keep glued shut up four days Ready put safety glasses now easiest way get eye have bottle right front edge building area reach down pick up dropped part under table Keep itto rear building space always out reach kids Another way making single-strand motors has use among indoor guys years Double back loop end motor strand around Tip stick some doweling have partner stretch loop whip dozen turns around thread drop glue keeps thread coming undone loose end can trimmed quite close slipping through Single-strand motors smooth-running enable us never have exactly right size rubber reduce power Fernando Ramos world-renowned scale expert columnist homebuilder now air 12 foot Marquart Charger implored him tape few inches cardboard tube sticking out side fuselage near tail could model scale rubber job no avail make time play new toy has turned editorship Flightmasters Scale News Views over yours truly after twelve long years devoted service way youd like get fine publication will feature least two large fold-out scale plans lots 3-views andfun send$9 $l0forfull membership Phyllis Warner 432-C San Vicente Blvd Santa Monica CA 90402 Launch free-flight scale job boils down three factors keeping realistic saving model damage trying comply rules contest Some factors need thought out include hand-launch technique ROG technique launching devices model construction make things easier Outside Harold Osbornes rail-launched Opel Hatry jetex ship have never witnessed true catapult downhill ramp launching FF Scale job lets concentrate hand-launching time being ROG required AMA scale rules indoor outdoor rubber optional gas rewarded points render almost obligatory can real pain empennage flying sites furnished asphalt grinds off wingtips make forjaning nose contacts cannot walk out softer area fly chance destroying hours careful work multiplied greatly some cases ROG may required unimproved surface / ed scale pilot would appear have foot-high boulders foot-deep ruts way Putting couple sheets plywood down may enable STOL-type ships get off about require run 20 feet Planes retractable gear look kind dumb flying around wheels down time could course make retracting installing complicated heavy mechanisms have seen have never seen work well wheels-up model Retracts rubber job add much weight weakness undercarriage Weight electric planes already problem C02 ships forget Now anticipating howl indignation ROG -oriented friends cry real planes hand-launched allow us consider following General Dave Stott venerable Flying Aces Club Unless go gearing rubber job just has swing big prop enough defacing scale appearance extending landing gear can ROG small percentage condnued page 118 April 1979 67 Royalihshowed us two dif ferent Gee Bee designs FAC Nats em ploys two rubber motors geered shaft solve CG problem capable flying like sixty right over distant woodstho Royall didnt intend way Since stable youve better rethink Gee Bee Bobby Haight Savoia-Marchetti SM 5X still testing stage Two Astro-Flight 02 electric motors Note severe scale up-thrust tandem-engine nacelle Photo Phyllis Warner Bill has things say about lovely parasolso leave Its identity story text cost better part of$ 1000 bit bulky seem have bumbled solution least seems like solution time will tell potential solution 50-power direct measuring microscope marketed Edmund Scientific Co Basically small 50-power microscope Beneath eyepiece reticle consisting scale graduated thousandths inch five-mil marks accented lO-mil marks numbered Total scale length cor responds 100 mils 1/10 inch actual size reticle scale several times appears crisp clear bottom end has slanted concave chromeplated cap reflects light onto object being viewed clear-plastic goodie bottom holds thing correct distance specimen cheapie optical mechanical quality surprisingly good image appears sharp clear over entire field view accuracy depends adjustment clear-plastic goodie respect scope body pre-set factory As received off 1 mil over whole 100-mil range percent full scale pretty darned good such thing Id say readjusted put right made intermediate markings right also fuzzed up image slightly Skinny DT Fuse remember thin stuff red spiral stripe used get friends England send us thats what Im talking about Mini Dethermalizer Fuse recently introduced Peck-Polymers apparently same stuff also same peddled Blue Ridge Models packaged 2-ft lengths sell $149 complete instruc tions showing install top fuselage less likely cause fires since far forward tail wont change trim much burns away Being small diameterit fits nicely 3/16 id snuffer tubeboth snuffer fuse weigh about half much regular Sig 1/4-in stuff drag less too making ideal small models certainly adequate largest Burning rate moving air 142 minutes per stripe moving air stripes widely spaced Sigs turns out burning rate per inch still bit faster Sigs reliable Pirelli Available. Maybe Two sources new Pirelli have opened up US Oldtimer Models Box 18002 Mil waukee WI 53218 CHE Hobbies 10900 Eastwood Ave Inglewood CA 90304 Oldtimer Models has selling lot Indoor crowd notes Easy B record 1845 Paper Stick record over 28 minutes among others have set using rubber Sizes prices 2 mm $375 per 100 ft 3 mm $420 per 100 ft $950 per 245 ft 75 oz 6 mm $840per lOOftand$1900per245 ft15 oz Prices postpaid subject change Eventually Oldtimer will have other sizes including 15 mm 1/16 CHE expected large shipment should have arrived time read Size isnt stated presumed 6 mm e $15 per pound Thats good news. except price bad news some batches new Pirelli exhibit characteristic common some batches old Pirelli knew hated brittleness often breaks half turns get wound up energy output may far less reported certain batches So nothings new pay money take chances Third Sierra Cup International meet sponsored Sierra Eagles Northern California will take place October 13 14 Sacramento immedi ately following World Championships Taft Patterned after Pierre Trebod contest held France following European world-champs contests should draw World Champs competitors supporters plus large number other American modelers attend World Champs observers helpers appears will first actual international contestFAI sanctioned thatever held US Nordic Glider Fl Wakefield Rubber Power FlB FAI Power FlC events measure should Biggie Decade FAL-event competition US details will appear due course previous FAL program parti cipants will receive announcements have questions check Roger Simpson 2625 Queenwood Dr Rancho Cordova CA 95670 Model Aviation Plan Service wonder have taken advantage little announcement accompanying monthly list full-size plans says sending stamped self-ad dressed business-size envelope Model Aviation can obtain complete listing of available plans free asking Only random sampling listed month magazine As Decem ber 1978 143 plans listed 37 whichor 259%are free-flight models doesnt include hybrid RC assisted old-timers Plans models have appeared full-size plans magazine available better check back-issues file planning something like Peanut scale Pennyplane model Average price plan around $3 postpaid Its well worth pair postage stamps five minutes time Id say Bob Meuser 4200 Gregory St Oakland CA 94619 FF Sport/Scale/Warner continued page 67 entire flight cannot see sticking scalelength landing gear sacrificing prop efficiency either Most see WW II fighter race plane roaring around its gear down keeping designed function machine must ROG let hatches slide back least 150 flap used models well let performance judged no farther model leaves ground picks up again touches down landing between applicable what should sea planes us fortunate have Lake Elsinore disposal Must choose scale 118 Model Aviation FINISH MODEL AS ANY ONE OF THREE DIFFERENT AIRCRAFT #121 ORE RED LION MISS PATTERSON MISS NEW ORLEANS PRICE $595 FROM YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING SEND 5O FOR CATALOG DEPT MA PAWNEE STREET MARCOS CALIFORNIA 9 subjects landing gear length prime factor ridiculous Are building flying scale takeoff scale models An excellent method hand-launching proposed Ken Hamilton has noticed otherwise accomplished scale modelers launching excessive speed and/or nose-up angles hand moving through arc model says Ken should projected .along straight line desired flight path means arm motion involving both shoulder elbow joints arm moves hand straight line can match flying speed expected model excess lift produced nose-up hurling will minimized Sort ofjust let fly out hand Ken top men aircraft industry Sabreliner project before retirement adds Real aircraft docile within design speed envelope become unruly pushed outside too months TWA comes Dick Seifried Curtiss XP-37 pic Jan MA lost 1978 Flightmasters Annual three flights about minute final awe-inspiring 14 minutes QOS 22 span one-ounce model built la Earl Stahl clamshell construction flew six strands X 22 Sig contest rubber one-minute motor runs model did best calm air trouble ground turbulence due low power Dick feels shorter powerful motor would get up out problem reduction motor run 35/40 seconds Dick offers loan photo negative making own plans address R Seifried Jr 13022 Barto Dr Granada Hills CA 91344 readers have sent recommenda tions best buy year gold rubber-scale plans reduced catalogue Golden Age Reproductions POBox #13 Braintree MA 02184 Put out Joe Fitzgibbon book shows plans can order him full size collection 150 vintage drawings worth price catalogue Send along $5 wont regret Keep great hints tips TWAs 5 X 7 B/Ws coming Bill Warner 432C San Vicente Blvd Santa Monica CA 90402 Rubber/Pearce continued page 71 closer control winding maximum turns great priviledge wind knowing blow-up motor model fuselage will survive author achieved protective tube system shown photographs Others have constructed fuselages layers balsa fiberglass can contain broken motor Experience new Pirelli limited small quantities single batch source US Pirelli established written Sep tember 1978 perfect product has bad spots edge defects does FAI 110 N 0 WI 100 H C' 90 zW W- HZ 80 ZW wcr OW 70 aAr rubber choice between Pirelli FAI simple choice Both have virtues Although Pirelli has about 9% energy 750F FAL retains its energy better hold waiting good air hold over five minutes PIRELLI FAI 40 50 60 70 80 90 AMBIENT TEMP 0F 100 Fig 7 Energy storage variation temperature April1979 119
Edition: Model Aviation - 1979/04
Page Numbers: 66, 67, 118, 119
FLIGHTMASTER Cliff McBaine writes say information freewbeelers lacked very important item small bushing washer assembly soldered prop shaft behind prop take load wound tensioned rubber allows prop float free prop shaft soon driving force exhausted see sketches Care should taken keep dimension small possible limit movement shown dimension B want have 900 bend shaft miss engaging escapement interfering belt buckle certainly great idea allows keep slack up rundown braided motor Cliff prefers pre-tensioned braided since Korda method true braidingis something else again Having no pretensions great knowledge area Ill let Cliff describe method .make up motor twice desired BUSHING OR WASHER SOLDERED TO HB DISTANCE SHAFT TAKES THRUST LOAD OF RUBBER THRUST BEARING MUST BE LESS THAN B length consisting half number strands desired Put motor winding hook external apart model wind enough turns come twice distance between hooks model motor will just taut enough have slight sag take loading stick must concept put middle motor bring both ends over fasten dowel anchor other end loading stick now ready load As pretensioning method requires multiples four strands 481216 etc may suitable larger rubber ships Playing around smaller strand fl sizes will generally get motor cross section want Its always nice have spool 1-mm fine adjustments other end spectrum Ken Hamilton experimenting singlestrand motors using cyanoacrylate glue loop shut After washing rubber cut allow bit extra loop end narrows ends pointed configuration bends back over bit teflon tubing keep loop open hook drop cyanoacrylate folded-back piece makes joint will outlast adjacent motor strand Remove teflon youre business Allow ol perfesser Walt Mooney demonstrates proper launch technique Jumbo rubber Avro 0 Just geter up fiying speed No javelin throwing strange aii iearned iesson kids first rubber model now learn again Bill Noonan plc 66 Model Aviation again caution what may tend forget familiarity Cyanoacrylate glue Hot Stuff Permabond Zap etc highly effective doing what origi nally invented gluing parts human body together get tiniest drop eye will extremely painful may keep glued shut up four days Ready put safety glasses now easiest way get eye have bottle right front edge building area reach down pick up dropped part under table Keep itto rear building space always out reach kids Another way making single-strand motors has use among indoor guys years Double back loop end motor strand around Tip stick some doweling have partner stretch loop whip dozen turns around thread drop glue keeps thread coming undone loose end can trimmed quite close slipping through Single-strand motors smooth-running enable us never have exactly right size rubber reduce power Fernando Ramos world-renowned scale expert columnist homebuilder now air 12 foot Marquart Charger implored him tape few inches cardboard tube sticking out side fuselage near tail could model scale rubber job no avail make time play new toy has turned editorship Flightmasters Scale News Views over yours truly after twelve long years devoted service way youd like get fine publication will feature least two large fold-out scale plans lots 3-views andfun send$9 $l0forfull membership Phyllis Warner 432-C San Vicente Blvd Santa Monica CA 90402 Launch free-flight scale job boils down three factors keeping realistic saving model damage trying comply rules contest Some factors need thought out include hand-launch technique ROG technique launching devices model construction make things easier Outside Harold Osbornes rail-launched Opel Hatry jetex ship have never witnessed true catapult downhill ramp launching FF Scale job lets concentrate hand-launching time being ROG required AMA scale rules indoor outdoor rubber optional gas rewarded points render almost obligatory can real pain empennage flying sites furnished asphalt grinds off wingtips make forjaning nose contacts cannot walk out softer area fly chance destroying hours careful work multiplied greatly some cases ROG may required unimproved surface / ed scale pilot would appear have foot-high boulders foot-deep ruts way Putting couple sheets plywood down may enable STOL-type ships get off about require run 20 feet Planes retractable gear look kind dumb flying around wheels down time could course make retracting installing complicated heavy mechanisms have seen have never seen work well wheels-up model Retracts rubber job add much weight weakness undercarriage Weight electric planes already problem C02 ships forget Now anticipating howl indignation ROG -oriented friends cry real planes hand-launched allow us consider following General Dave Stott venerable Flying Aces Club Unless go gearing rubber job just has swing big prop enough defacing scale appearance extending landing gear can ROG small percentage condnued page 118 April 1979 67 Royalihshowed us two dif ferent Gee Bee designs FAC Nats em ploys two rubber motors geered shaft solve CG problem capable flying like sixty right over distant woodstho Royall didnt intend way Since stable youve better rethink Gee Bee Bobby Haight Savoia-Marchetti SM 5X still testing stage Two Astro-Flight 02 electric motors Note severe scale up-thrust tandem-engine nacelle Photo Phyllis Warner Bill has things say about lovely parasolso leave Its identity story text cost better part of$ 1000 bit bulky seem have bumbled solution least seems like solution time will tell potential solution 50-power direct measuring microscope marketed Edmund Scientific Co Basically small 50-power microscope Beneath eyepiece reticle consisting scale graduated thousandths inch five-mil marks accented lO-mil marks numbered Total scale length cor responds 100 mils 1/10 inch actual size reticle scale several times appears crisp clear bottom end has slanted concave chromeplated cap reflects light onto object being viewed clear-plastic goodie bottom holds thing correct distance specimen cheapie optical mechanical quality surprisingly good image appears sharp clear over entire field view accuracy depends adjustment clear-plastic goodie respect scope body pre-set factory As received off 1 mil over whole 100-mil range percent full scale pretty darned good such thing Id say readjusted put right made intermediate markings right also fuzzed up image slightly Skinny DT Fuse remember thin stuff red spiral stripe used get friends England send us thats what Im talking about Mini Dethermalizer Fuse recently introduced Peck-Polymers apparently same stuff also same peddled Blue Ridge Models packaged 2-ft lengths sell $149 complete instruc tions showing install top fuselage less likely cause fires since far forward tail wont change trim much burns away Being small diameterit fits nicely 3/16 id snuffer tubeboth snuffer fuse weigh about half much regular Sig 1/4-in stuff drag less too making ideal small models certainly adequate largest Burning rate moving air 142 minutes per stripe moving air stripes widely spaced Sigs turns out burning rate per inch still bit faster Sigs reliable Pirelli Available. Maybe Two sources new Pirelli have opened up US Oldtimer Models Box 18002 Mil waukee WI 53218 CHE Hobbies 10900 Eastwood Ave Inglewood CA 90304 Oldtimer Models has selling lot Indoor crowd notes Easy B record 1845 Paper Stick record over 28 minutes among others have set using rubber Sizes prices 2 mm $375 per 100 ft 3 mm $420 per 100 ft $950 per 245 ft 75 oz 6 mm $840per lOOftand$1900per245 ft15 oz Prices postpaid subject change Eventually Oldtimer will have other sizes including 15 mm 1/16 CHE expected large shipment should have arrived time read Size isnt stated presumed 6 mm e $15 per pound Thats good news. except price bad news some batches new Pirelli exhibit characteristic common some batches old Pirelli knew hated brittleness often breaks half turns get wound up energy output may far less reported certain batches So nothings new pay money take chances Third Sierra Cup International meet sponsored Sierra Eagles Northern California will take place October 13 14 Sacramento immedi ately following World Championships Taft Patterned after Pierre Trebod contest held France following European world-champs contests should draw World Champs competitors supporters plus large number other American modelers attend World Champs observers helpers appears will first actual international contestFAI sanctioned thatever held US Nordic Glider Fl Wakefield Rubber Power FlB FAI Power FlC events measure should Biggie Decade FAL-event competition US details will appear due course previous FAL program parti cipants will receive announcements have questions check Roger Simpson 2625 Queenwood Dr Rancho Cordova CA 95670 Model Aviation Plan Service wonder have taken advantage little announcement accompanying monthly list full-size plans says sending stamped self-ad dressed business-size envelope Model Aviation can obtain complete listing of available plans free asking Only random sampling listed month magazine As Decem ber 1978 143 plans listed 37 whichor 259%are free-flight models doesnt include hybrid RC assisted old-timers Plans models have appeared full-size plans magazine available better check back-issues file planning something like Peanut scale Pennyplane model Average price plan around $3 postpaid Its well worth pair postage stamps five minutes time Id say Bob Meuser 4200 Gregory St Oakland CA 94619 FF Sport/Scale/Warner continued page 67 entire flight cannot see sticking scalelength landing gear sacrificing prop efficiency either Most see WW II fighter race plane roaring around its gear down keeping designed function machine must ROG let hatches slide back least 150 flap used models well let performance judged no farther model leaves ground picks up again touches down landing between applicable what should sea planes us fortunate have Lake Elsinore disposal Must choose scale 118 Model Aviation FINISH MODEL AS ANY ONE OF THREE DIFFERENT AIRCRAFT #121 ORE RED LION MISS PATTERSON MISS NEW ORLEANS PRICE $595 FROM YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING SEND 5O FOR CATALOG DEPT MA PAWNEE STREET MARCOS CALIFORNIA 9 subjects landing gear length prime factor ridiculous Are building flying scale takeoff scale models An excellent method hand-launching proposed Ken Hamilton has noticed otherwise accomplished scale modelers launching excessive speed and/or nose-up angles hand moving through arc model says Ken should projected .along straight line desired flight path means arm motion involving both shoulder elbow joints arm moves hand straight line can match flying speed expected model excess lift produced nose-up hurling will minimized Sort ofjust let fly out hand Ken top men aircraft industry Sabreliner project before retirement adds Real aircraft docile within design speed envelope become unruly pushed outside too months TWA comes Dick Seifried Curtiss XP-37 pic Jan MA lost 1978 Flightmasters Annual three flights about minute final awe-inspiring 14 minutes QOS 22 span one-ounce model built la Earl Stahl clamshell construction flew six strands X 22 Sig contest rubber one-minute motor runs model did best calm air trouble ground turbulence due low power Dick feels shorter powerful motor would get up out problem reduction motor run 35/40 seconds Dick offers loan photo negative making own plans address R Seifried Jr 13022 Barto Dr Granada Hills CA 91344 readers have sent recommenda tions best buy year gold rubber-scale plans reduced catalogue Golden Age Reproductions POBox #13 Braintree MA 02184 Put out Joe Fitzgibbon book shows plans can order him full size collection 150 vintage drawings worth price catalogue Send along $5 wont regret Keep great hints tips TWAs 5 X 7 B/Ws coming Bill Warner 432C San Vicente Blvd Santa Monica CA 90402 Rubber/Pearce continued page 71 closer control winding maximum turns great priviledge wind knowing blow-up motor model fuselage will survive author achieved protective tube system shown photographs Others have constructed fuselages layers balsa fiberglass can contain broken motor Experience new Pirelli limited small quantities single batch source US Pirelli established written Sep tember 1978 perfect product has bad spots edge defects does FAI 110 N 0 WI 100 H C' 90 zW W- HZ 80 ZW wcr OW 70 aAr rubber choice between Pirelli FAI simple choice Both have virtues Although Pirelli has about 9% energy 750F FAL retains its energy better hold waiting good air hold over five minutes PIRELLI FAI 40 50 60 70 80 90 AMBIENT TEMP 0F 100 Fig 7 Energy storage variation temperature April1979 119
Edition: Model Aviation - 1979/04
Page Numbers: 66, 67, 118, 119
FLIGHTMASTER Cliff McBaine writes say information freewbeelers lacked very important item small bushing washer assembly soldered prop shaft behind prop take load wound tensioned rubber allows prop float free prop shaft soon driving force exhausted see sketches Care should taken keep dimension small possible limit movement shown dimension B want have 900 bend shaft miss engaging escapement interfering belt buckle certainly great idea allows keep slack up rundown braided motor Cliff prefers pre-tensioned braided since Korda method true braidingis something else again Having no pretensions great knowledge area Ill let Cliff describe method .make up motor twice desired BUSHING OR WASHER SOLDERED TO HB DISTANCE SHAFT TAKES THRUST LOAD OF RUBBER THRUST BEARING MUST BE LESS THAN B length consisting half number strands desired Put motor winding hook external apart model wind enough turns come twice distance between hooks model motor will just taut enough have slight sag take loading stick must concept put middle motor bring both ends over fasten dowel anchor other end loading stick now ready load As pretensioning method requires multiples four strands 481216 etc may suitable larger rubber ships Playing around smaller strand fl sizes will generally get motor cross section want Its always nice have spool 1-mm fine adjustments other end spectrum Ken Hamilton experimenting singlestrand motors using cyanoacrylate glue loop shut After washing rubber cut allow bit extra loop end narrows ends pointed configuration bends back over bit teflon tubing keep loop open hook drop cyanoacrylate folded-back piece makes joint will outlast adjacent motor strand Remove teflon youre business Allow ol perfesser Walt Mooney demonstrates proper launch technique Jumbo rubber Avro 0 Just geter up fiying speed No javelin throwing strange aii iearned iesson kids first rubber model now learn again Bill Noonan plc 66 Model Aviation again caution what may tend forget familiarity Cyanoacrylate glue Hot Stuff Permabond Zap etc highly effective doing what origi nally invented gluing parts human body together get tiniest drop eye will extremely painful may keep glued shut up four days Ready put safety glasses now easiest way get eye have bottle right front edge building area reach down pick up dropped part under table Keep itto rear building space always out reach kids Another way making single-strand motors has use among indoor guys years Double back loop end motor strand around Tip stick some doweling have partner stretch loop whip dozen turns around thread drop glue keeps thread coming undone loose end can trimmed quite close slipping through Single-strand motors smooth-running enable us never have exactly right size rubber reduce power Fernando Ramos world-renowned scale expert columnist homebuilder now air 12 foot Marquart Charger implored him tape few inches cardboard tube sticking out side fuselage near tail could model scale rubber job no avail make time play new toy has turned editorship Flightmasters Scale News Views over yours truly after twelve long years devoted service way youd like get fine publication will feature least two large fold-out scale plans lots 3-views andfun send$9 $l0forfull membership Phyllis Warner 432-C San Vicente Blvd Santa Monica CA 90402 Launch free-flight scale job boils down three factors keeping realistic saving model damage trying comply rules contest Some factors need thought out include hand-launch technique ROG technique launching devices model construction make things easier Outside Harold Osbornes rail-launched Opel Hatry jetex ship have never witnessed true catapult downhill ramp launching FF Scale job lets concentrate hand-launching time being ROG required AMA scale rules indoor outdoor rubber optional gas rewarded points render almost obligatory can real pain empennage flying sites furnished asphalt grinds off wingtips make forjaning nose contacts cannot walk out softer area fly chance destroying hours careful work multiplied greatly some cases ROG may required unimproved surface / ed scale pilot would appear have foot-high boulders foot-deep ruts way Putting couple sheets plywood down may enable STOL-type ships get off about require run 20 feet Planes retractable gear look kind dumb flying around wheels down time could course make retracting installing complicated heavy mechanisms have seen have never seen work well wheels-up model Retracts rubber job add much weight weakness undercarriage Weight electric planes already problem C02 ships forget Now anticipating howl indignation ROG -oriented friends cry real planes hand-launched allow us consider following General Dave Stott venerable Flying Aces Club Unless go gearing rubber job just has swing big prop enough defacing scale appearance extending landing gear can ROG small percentage condnued page 118 April 1979 67 Royalihshowed us two dif ferent Gee Bee designs FAC Nats em ploys two rubber motors geered shaft solve CG problem capable flying like sixty right over distant woodstho Royall didnt intend way Since stable youve better rethink Gee Bee Bobby Haight Savoia-Marchetti SM 5X still testing stage Two Astro-Flight 02 electric motors Note severe scale up-thrust tandem-engine nacelle Photo Phyllis Warner Bill has things say about lovely parasolso leave Its identity story text cost better part of$ 1000 bit bulky seem have bumbled solution least seems like solution time will tell potential solution 50-power direct measuring microscope marketed Edmund Scientific Co Basically small 50-power microscope Beneath eyepiece reticle consisting scale graduated thousandths inch five-mil marks accented lO-mil marks numbered Total scale length cor responds 100 mils 1/10 inch actual size reticle scale several times appears crisp clear bottom end has slanted concave chromeplated cap reflects light onto object being viewed clear-plastic goodie bottom holds thing correct distance specimen cheapie optical mechanical quality surprisingly good image appears sharp clear over entire field view accuracy depends adjustment clear-plastic goodie respect scope body pre-set factory As received off 1 mil over whole 100-mil range percent full scale pretty darned good such thing Id say readjusted put right made intermediate markings right also fuzzed up image slightly Skinny DT Fuse remember thin stuff red spiral stripe used get friends England send us thats what Im talking about Mini Dethermalizer Fuse recently introduced Peck-Polymers apparently same stuff also same peddled Blue Ridge Models packaged 2-ft lengths sell $149 complete instruc tions showing install top fuselage less likely cause fires since far forward tail wont change trim much burns away Being small diameterit fits nicely 3/16 id snuffer tubeboth snuffer fuse weigh about half much regular Sig 1/4-in stuff drag less too making ideal small models certainly adequate largest Burning rate moving air 142 minutes per stripe moving air stripes widely spaced Sigs turns out burning rate per inch still bit faster Sigs reliable Pirelli Available. Maybe Two sources new Pirelli have opened up US Oldtimer Models Box 18002 Mil waukee WI 53218 CHE Hobbies 10900 Eastwood Ave Inglewood CA 90304 Oldtimer Models has selling lot Indoor crowd notes Easy B record 1845 Paper Stick record over 28 minutes among others have set using rubber Sizes prices 2 mm $375 per 100 ft 3 mm $420 per 100 ft $950 per 245 ft 75 oz 6 mm $840per lOOftand$1900per245 ft15 oz Prices postpaid subject change Eventually Oldtimer will have other sizes including 15 mm 1/16 CHE expected large shipment should have arrived time read Size isnt stated presumed 6 mm e $15 per pound Thats good news. except price bad news some batches new Pirelli exhibit characteristic common some batches old Pirelli knew hated brittleness often breaks half turns get wound up energy output may far less reported certain batches So nothings new pay money take chances Third Sierra Cup International meet sponsored Sierra Eagles Northern California will take place October 13 14 Sacramento immedi ately following World Championships Taft Patterned after Pierre Trebod contest held France following European world-champs contests should draw World Champs competitors supporters plus large number other American modelers attend World Champs observers helpers appears will first actual international contestFAI sanctioned thatever held US Nordic Glider Fl Wakefield Rubber Power FlB FAI Power FlC events measure should Biggie Decade FAL-event competition US details will appear due course previous FAL program parti cipants will receive announcements have questions check Roger Simpson 2625 Queenwood Dr Rancho Cordova CA 95670 Model Aviation Plan Service wonder have taken advantage little announcement accompanying monthly list full-size plans says sending stamped self-ad dressed business-size envelope Model Aviation can obtain complete listing of available plans free asking Only random sampling listed month magazine As Decem ber 1978 143 plans listed 37 whichor 259%are free-flight models doesnt include hybrid RC assisted old-timers Plans models have appeared full-size plans magazine available better check back-issues file planning something like Peanut scale Pennyplane model Average price plan around $3 postpaid Its well worth pair postage stamps five minutes time Id say Bob Meuser 4200 Gregory St Oakland CA 94619 FF Sport/Scale/Warner continued page 67 entire flight cannot see sticking scalelength landing gear sacrificing prop efficiency either Most see WW II fighter race plane roaring around its gear down keeping designed function machine must ROG let hatches slide back least 150 flap used models well let performance judged no farther model leaves ground picks up again touches down landing between applicable what should sea planes us fortunate have Lake Elsinore disposal Must choose scale 118 Model Aviation FINISH MODEL AS ANY ONE OF THREE DIFFERENT AIRCRAFT #121 ORE RED LION MISS PATTERSON MISS NEW ORLEANS PRICE $595 FROM YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING SEND 5O FOR CATALOG DEPT MA PAWNEE STREET MARCOS CALIFORNIA 9 subjects landing gear length prime factor ridiculous Are building flying scale takeoff scale models An excellent method hand-launching proposed Ken Hamilton has noticed otherwise accomplished scale modelers launching excessive speed and/or nose-up angles hand moving through arc model says Ken should projected .along straight line desired flight path means arm motion involving both shoulder elbow joints arm moves hand straight line can match flying speed expected model excess lift produced nose-up hurling will minimized Sort ofjust let fly out hand Ken top men aircraft industry Sabreliner project before retirement adds Real aircraft docile within design speed envelope become unruly pushed outside too months TWA comes Dick Seifried Curtiss XP-37 pic Jan MA lost 1978 Flightmasters Annual three flights about minute final awe-inspiring 14 minutes QOS 22 span one-ounce model built la Earl Stahl clamshell construction flew six strands X 22 Sig contest rubber one-minute motor runs model did best calm air trouble ground turbulence due low power Dick feels shorter powerful motor would get up out problem reduction motor run 35/40 seconds Dick offers loan photo negative making own plans address R Seifried Jr 13022 Barto Dr Granada Hills CA 91344 readers have sent recommenda tions best buy year gold rubber-scale plans reduced catalogue Golden Age Reproductions POBox #13 Braintree MA 02184 Put out Joe Fitzgibbon book shows plans can order him full size collection 150 vintage drawings worth price catalogue Send along $5 wont regret Keep great hints tips TWAs 5 X 7 B/Ws coming Bill Warner 432C San Vicente Blvd Santa Monica CA 90402 Rubber/Pearce continued page 71 closer control winding maximum turns great priviledge wind knowing blow-up motor model fuselage will survive author achieved protective tube system shown photographs Others have constructed fuselages layers balsa fiberglass can contain broken motor Experience new Pirelli limited small quantities single batch source US Pirelli established written Sep tember 1978 perfect product has bad spots edge defects does FAI 110 N 0 WI 100 H C' 90 zW W- HZ 80 ZW wcr OW 70 aAr rubber choice between Pirelli FAI simple choice Both have virtues Although Pirelli has about 9% energy 750F FAL retains its energy better hold waiting good air hold over five minutes PIRELLI FAI 40 50 60 70 80 90 AMBIENT TEMP 0F 100 Fig 7 Energy storage variation temperature April1979 119
Edition: Model Aviation - 1979/04
Page Numbers: 66, 67, 118, 119
FLIGHTMASTER Cliff McBaine writes say information freewbeelers lacked very important item small bushing washer assembly soldered prop shaft behind prop take load wound tensioned rubber allows prop float free prop shaft soon driving force exhausted see sketches Care should taken keep dimension small possible limit movement shown dimension B want have 900 bend shaft miss engaging escapement interfering belt buckle certainly great idea allows keep slack up rundown braided motor Cliff prefers pre-tensioned braided since Korda method true braidingis something else again Having no pretensions great knowledge area Ill let Cliff describe method .make up motor twice desired BUSHING OR WASHER SOLDERED TO HB DISTANCE SHAFT TAKES THRUST LOAD OF RUBBER THRUST BEARING MUST BE LESS THAN B length consisting half number strands desired Put motor winding hook external apart model wind enough turns come twice distance between hooks model motor will just taut enough have slight sag take loading stick must concept put middle motor bring both ends over fasten dowel anchor other end loading stick now ready load As pretensioning method requires multiples four strands 481216 etc may suitable larger rubber ships Playing around smaller strand fl sizes will generally get motor cross section want Its always nice have spool 1-mm fine adjustments other end spectrum Ken Hamilton experimenting singlestrand motors using cyanoacrylate glue loop shut After washing rubber cut allow bit extra loop end narrows ends pointed configuration bends back over bit teflon tubing keep loop open hook drop cyanoacrylate folded-back piece makes joint will outlast adjacent motor strand Remove teflon youre business Allow ol perfesser Walt Mooney demonstrates proper launch technique Jumbo rubber Avro 0 Just geter up fiying speed No javelin throwing strange aii iearned iesson kids first rubber model now learn again Bill Noonan plc 66 Model Aviation again caution what may tend forget familiarity Cyanoacrylate glue Hot Stuff Permabond Zap etc highly effective doing what origi nally invented gluing parts human body together get tiniest drop eye will extremely painful may keep glued shut up four days Ready put safety glasses now easiest way get eye have bottle right front edge building area reach down pick up dropped part under table Keep itto rear building space always out reach kids Another way making single-strand motors has use among indoor guys years Double back loop end motor strand around Tip stick some doweling have partner stretch loop whip dozen turns around thread drop glue keeps thread coming undone loose end can trimmed quite close slipping through Single-strand motors smooth-running enable us never have exactly right size rubber reduce power Fernando Ramos world-renowned scale expert columnist homebuilder now air 12 foot Marquart Charger implored him tape few inches cardboard tube sticking out side fuselage near tail could model scale rubber job no avail make time play new toy has turned editorship Flightmasters Scale News Views over yours truly after twelve long years devoted service way youd like get fine publication will feature least two large fold-out scale plans lots 3-views andfun send$9 $l0forfull membership Phyllis Warner 432-C San Vicente Blvd Santa Monica CA 90402 Launch free-flight scale job boils down three factors keeping realistic saving model damage trying comply rules contest Some factors need thought out include hand-launch technique ROG technique launching devices model construction make things easier Outside Harold Osbornes rail-launched Opel Hatry jetex ship have never witnessed true catapult downhill ramp launching FF Scale job lets concentrate hand-launching time being ROG required AMA scale rules indoor outdoor rubber optional gas rewarded points render almost obligatory can real pain empennage flying sites furnished asphalt grinds off wingtips make forjaning nose contacts cannot walk out softer area fly chance destroying hours careful work multiplied greatly some cases ROG may required unimproved surface / ed scale pilot would appear have foot-high boulders foot-deep ruts way Putting couple sheets plywood down may enable STOL-type ships get off about require run 20 feet Planes retractable gear look kind dumb flying around wheels down time could course make retracting installing complicated heavy mechanisms have seen have never seen work well wheels-up model Retracts rubber job add much weight weakness undercarriage Weight electric planes already problem C02 ships forget Now anticipating howl indignation ROG -oriented friends cry real planes hand-launched allow us consider following General Dave Stott venerable Flying Aces Club Unless go gearing rubber job just has swing big prop enough defacing scale appearance extending landing gear can ROG small percentage condnued page 118 April 1979 67 Royalihshowed us two dif ferent Gee Bee designs FAC Nats em ploys two rubber motors geered shaft solve CG problem capable flying like sixty right over distant woodstho Royall didnt intend way Since stable youve better rethink Gee Bee Bobby Haight Savoia-Marchetti SM 5X still testing stage Two Astro-Flight 02 electric motors Note severe scale up-thrust tandem-engine nacelle Photo Phyllis Warner Bill has things say about lovely parasolso leave Its identity story text cost better part of$ 1000 bit bulky seem have bumbled solution least seems like solution time will tell potential solution 50-power direct measuring microscope marketed Edmund Scientific Co Basically small 50-power microscope Beneath eyepiece reticle consisting scale graduated thousandths inch five-mil marks accented lO-mil marks numbered Total scale length cor responds 100 mils 1/10 inch actual size reticle scale several times appears crisp clear bottom end has slanted concave chromeplated cap reflects light onto object being viewed clear-plastic goodie bottom holds thing correct distance specimen cheapie optical mechanical quality surprisingly good image appears sharp clear over entire field view accuracy depends adjustment clear-plastic goodie respect scope body pre-set factory As received off 1 mil over whole 100-mil range percent full scale pretty darned good such thing Id say readjusted put right made intermediate markings right also fuzzed up image slightly Skinny DT Fuse remember thin stuff red spiral stripe used get friends England send us thats what Im talking about Mini Dethermalizer Fuse recently introduced Peck-Polymers apparently same stuff also same peddled Blue Ridge Models packaged 2-ft lengths sell $149 complete instruc tions showing install top fuselage less likely cause fires since far forward tail wont change trim much burns away Being small diameterit fits nicely 3/16 id snuffer tubeboth snuffer fuse weigh about half much regular Sig 1/4-in stuff drag less too making ideal small models certainly adequate largest Burning rate moving air 142 minutes per stripe moving air stripes widely spaced Sigs turns out burning rate per inch still bit faster Sigs reliable Pirelli Available. Maybe Two sources new Pirelli have opened up US Oldtimer Models Box 18002 Mil waukee WI 53218 CHE Hobbies 10900 Eastwood Ave Inglewood CA 90304 Oldtimer Models has selling lot Indoor crowd notes Easy B record 1845 Paper Stick record over 28 minutes among others have set using rubber Sizes prices 2 mm $375 per 100 ft 3 mm $420 per 100 ft $950 per 245 ft 75 oz 6 mm $840per lOOftand$1900per245 ft15 oz Prices postpaid subject change Eventually Oldtimer will have other sizes including 15 mm 1/16 CHE expected large shipment should have arrived time read Size isnt stated presumed 6 mm e $15 per pound Thats good news. except price bad news some batches new Pirelli exhibit characteristic common some batches old Pirelli knew hated brittleness often breaks half turns get wound up energy output may far less reported certain batches So nothings new pay money take chances Third Sierra Cup International meet sponsored Sierra Eagles Northern California will take place October 13 14 Sacramento immedi ately following World Championships Taft Patterned after Pierre Trebod contest held France following European world-champs contests should draw World Champs competitors supporters plus large number other American modelers attend World Champs observers helpers appears will first actual international contestFAI sanctioned thatever held US Nordic Glider Fl Wakefield Rubber Power FlB FAI Power FlC events measure should Biggie Decade FAL-event competition US details will appear due course previous FAL program parti cipants will receive announcements have questions check Roger Simpson 2625 Queenwood Dr Rancho Cordova CA 95670 Model Aviation Plan Service wonder have taken advantage little announcement accompanying monthly list full-size plans says sending stamped self-ad dressed business-size envelope Model Aviation can obtain complete listing of available plans free asking Only random sampling listed month magazine As Decem ber 1978 143 plans listed 37 whichor 259%are free-flight models doesnt include hybrid RC assisted old-timers Plans models have appeared full-size plans magazine available better check back-issues file planning something like Peanut scale Pennyplane model Average price plan around $3 postpaid Its well worth pair postage stamps five minutes time Id say Bob Meuser 4200 Gregory St Oakland CA 94619 FF Sport/Scale/Warner continued page 67 entire flight cannot see sticking scalelength landing gear sacrificing prop efficiency either Most see WW II fighter race plane roaring around its gear down keeping designed function machine must ROG let hatches slide back least 150 flap used models well let performance judged no farther model leaves ground picks up again touches down landing between applicable what should sea planes us fortunate have Lake Elsinore disposal Must choose scale 118 Model Aviation FINISH MODEL AS ANY ONE OF THREE DIFFERENT AIRCRAFT #121 ORE RED LION MISS PATTERSON MISS NEW ORLEANS PRICE $595 FROM YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANDLING SEND 5O FOR CATALOG DEPT MA PAWNEE STREET MARCOS CALIFORNIA 9 subjects landing gear length prime factor ridiculous Are building flying scale takeoff scale models An excellent method hand-launching proposed Ken Hamilton has noticed otherwise accomplished scale modelers launching excessive speed and/or nose-up angles hand moving through arc model says Ken should projected .along straight line desired flight path means arm motion involving both shoulder elbow joints arm moves hand straight line can match flying speed expected model excess lift produced nose-up hurling will minimized Sort ofjust let fly out hand Ken top men aircraft industry Sabreliner project before retirement adds Real aircraft docile within design speed envelope become unruly pushed outside too months TWA comes Dick Seifried Curtiss XP-37 pic Jan MA lost 1978 Flightmasters Annual three flights about minute final awe-inspiring 14 minutes QOS 22 span one-ounce model built la Earl Stahl clamshell construction flew six strands X 22 Sig contest rubber one-minute motor runs model did best calm air trouble ground turbulence due low power Dick feels shorter powerful motor would get up out problem reduction motor run 35/40 seconds Dick offers loan photo negative making own plans address R Seifried Jr 13022 Barto Dr Granada Hills CA 91344 readers have sent recommenda tions best buy year gold rubber-scale plans reduced catalogue Golden Age Reproductions POBox #13 Braintree MA 02184 Put out Joe Fitzgibbon book shows plans can order him full size collection 150 vintage drawings worth price catalogue Send along $5 wont regret Keep great hints tips TWAs 5 X 7 B/Ws coming Bill Warner 432C San Vicente Blvd Santa Monica CA 90402 Rubber/Pearce continued page 71 closer control winding maximum turns great priviledge wind knowing blow-up motor model fuselage will survive author achieved protective tube system shown photographs Others have constructed fuselages layers balsa fiberglass can contain broken motor Experience new Pirelli limited small quantities single batch source US Pirelli established written Sep tember 1978 perfect product has bad spots edge defects does FAI 110 N 0 WI 100 H C' 90 zW W- HZ 80 ZW wcr OW 70 aAr rubber choice between Pirelli FAI simple choice Both have virtues Although Pirelli has about 9% energy 750F FAL retains its energy better hold waiting good air hold over five minutes PIRELLI FAI 40 50 60 70 80 90 AMBIENT TEMP 0F 100 Fig 7 Energy storage variation temperature April1979 119