Free Flight Duration author has understandable soft spot onei 940 oldtimer designed 18 Bottom Parsons won 4-sec run flyoffs thanks prop brakestops within milliseconds UTTII Bob Meuser ee Flight Spokee dig Free Flight want learn about suggest consider joining following organizations National Free-Flight Society NFFS National door Model Aviation Society NIMAS Society Antique Modelers SAM NIMAS oldest bunch sparkplugged Bud Tenny Its monthly publica tiona minimum four pagesgives results recent contest happenings latest national records schedule forthcom ing indoor meets lots hints tips four three-views outstanding models US abroad Annual dues clude subscription its publication Indoor News Views cost $350 Write Bud Tenny Box 545 Richardson TX 75080 SAM riding crest nostalgia wave seems have inundated phases lives fastest growing bunch Its publication SAM Speaks bi-monthly af fair containing 16 small info-packed pages news about Old-Timer happenings latest Old-Timer kits would believe lat est spark-ignition engines refuse call ignition engines Id call twostroke engine two-cycle engine SAM puts its own NATS runs occasional postal contests Latest innovation Old-Timer movement should pardon expression radio assisted FF OT FF RC promises combine best both worlds Dues subscription $300/year SAM 1947 Superior Aye Whiting md 46394 F L EL EL V IL V iLIzE wNIOR NATIONSL RR0 1940 NFFS largest bunch AMAaffiliated non-profit organization purpose preserve enhance promote sport hobby Free Flight Model Aviation its forms Man cant knock Its monthly publication Free Flight affectionately called Digest contains 12 jam-packed family-size pages latest best news information about phases Free Flight encompassing indoor old-timer scale sport standard AMA gas rubber glider events gung-ho international FAI com petition events Only extreme modesty dis suades describing truly great really addition NFFS presents its annual Symposiumnow its eighth running covering latest tech stuff addition its ten Model Year awards outstand ing FF models cannot fail mention its ongoing Juniors program its sponsorship unofficial FF NATS events represent growingsometimes perhaps dyingedge FF promising too seldom design competition models bridge gap tween Delta Dart real stuff critical involvement both Indoor Outdoor FAI team selection programs planning run ning FF events NATS eyeball-toeyeball confrontations AMA headquar ters areas seem disagreeor least cant seem understand other sorts good stuff Dues subscrip tion $6 per annum AMA members $11 two less Juniors Seniors write NFFS 431 Scandia Aye Des Moines Iowa 50315 Editor national model aviation mag azine wont name recently stated Free Flight began will end dont know about meanwhile Free Flight helluva nice place live NIMAS SAM NFFS will help keep way Most stories about free flight contests Taft Calif have mentioned searing dry heat dust dust devils booming thermals vicious downdrafts may accurate descrip tion period between Memorial Day Labor Day November becomes big lie lift drift downdrafts light light grass covers field peak temperatures mill-seventies homed toads have migrated Australia whatever Last November Taft hosted pompously titled Tenth Annual International Challenge Western Free Flight Association Tra ditionally two-day FAI-events-only af fair Three rounds held Saturday starting 2 pm four Sunday starting 8 am nice arrangement living five hours away Ten entered FAI Power event end seven regular rounds usual factors taken toll five Ed Carroll has won FAI Power event twice recent US Free Flight Champion ships John Warren top man last FAI Team Selection Semi-Finals Ken Oliver until recently held AMA rec ord event George Foster has sur vived cut made Finals last three times Dave Parsons who. lets just say has shown promise flyoff flights lots drawn flyers fire up engines launch succession As appointed hour first flyoff approached light thermal ac tivity first off got its full benefit Oliver last off missing 180-sec max 28 sec Foster exceeded allotted 8-sec engine run three three Warren Carroll Parsonsall maxed following flyoff 6-second engine runs what final flyoff 4-sec engine runs three took off rapid succession Carroll Warren engine over-runs Parsons model equipped prop brake built father Larry pat terned after prototypes manufac tured Hardy Brodersen Some Parsons improvements will appear production ver 36 Model Aviation sion device stops prop within few milliseconds after engine flooded off otherwise prop coasts better part second Since engine-run timing continues until prop stops coasting can disastrous 4-sec engine run Clearly model goes nine straight max flights FAI Power particularly decreasing engine runs demanded 1974 rules have changed 1975 has pretty good since Carroll War ren over-runs would stretching things lot say Dave won because superior model However consider Daves time last flight 157 sec full 30 sec better Carrolls Warrens despite over-runs Still flight doesnt prove anything could have factors affected flight time did meet eye other evidence however indi cates Daves model glides least well perhaps better best models field rate climb up best Check airfoil section shown three-view blunt leading edge doesnt look fast perhaps air doesnt see way certainly different typical thin high rather pointed leading edges seen FAI Power models few notable exceptions some notes about construction Daves Cathexis Ribs 3/32 sheet spaced 2-1/2 in main panels 2-5/8 tips ribs capped top 1/16 x 1/4 strips main panels / 16 x 3/16 tips Leading edge sheeting 1/16 Spars 1/8 x 3/8 main panels 1/8 x 1/4 tips Spar webbing 1/8 sheet grain running vertically Tip ribs splayed out 40 degrees vertical Fuselage longerons 1/8 x 1/2 sides 1/8 sheet auto-stab mechanism simple invented Larry Parsons shown column February 1972 AAM Rossi 15 engine Seelig timer course angle incidence wing 2 deg Stabilizer angles zero during climb minus deg during glide CG 65 67 percent root chord Stay tuned column next thrill ing episode about Daves trick airfoil has interesting heritage Newest Old-Timer Ah pleasant bask light ones own glory alas being color-fast glory fades rapidly day hero scarcely third cen tury later just another. pretty face ah pleasant see someone last receive recognition richly deserves. cially its latest addition John Pondd Old-Time Plan Service Cloud-Chopper II Bob Meuser age 18 set national record CGas Hydro back 1940 Plans show details both three-float gear interchang able single-wheel gear good ship might have great great flier Polywog fuselage shape influenced article W Hewitt Phillips showing such shape has less drag conven tional shapes according wind tunnel tests did MIT Slab-sided sheet-covered fuselage fairly easy build Tip ribs easily faked slide-the-template routine indicated plans rather plotting rib individ ually Sheet covered leading edge bit bother surely makes tough Plans price paltry $150 plus l5 handling Old Time Plans Service Box 3113 San Jose CA 95156 John Pond will sell plans virtually model published kitted during Golden Era modeling John has three book lets selling 75 available plans listed rubber-power models towline gliders second flying scale models third gassies scale list includes some modern ones addition oldies-but-goodies FF Gas rubberpower configurations R/C C/L boot All-balsa tail-first gassie sportater Carl Taylor latest long line successful sport competition modMs Taylor photol Backward Child would expect lawof-averages ensure person would get tail correct end airplane about half time Carl Taylor come out tail first Nordic gliders competition gas models everything claims intentional Carls latest nifty Cox Tee Dee 01 powered all-sheet sport model Peanut Gas could knock out Hot Stuff setting serious modeling efforts Electric FE NATS though elec tric propulsion may never have turned before might well turned recent turn events Astro Flight recently introduced Astro 02FF power unitone designed especially Free Flightto complement line also includes O2RC 05 10 25 power units charger model kits especially electric propulsion Previous Astro systems have aimed R/C market motors must run least 5 mm charge Free Flight shorter motor runs order weight bat tery pack can decreased 02FF du ration models having 220 250 sq wing area weighing 8 oz under recom mended performance such model should refreshing switch kind able obtain toy units flying scale somewhat larger models rec ommended Tentatively National Free Flight Society intends sponsor three electric propulsion events Mattel/Monogram Super Star units unlimited eventthose two also held last yearand models powered Astro 02FF units Astro will supply trophies through third place Motor run limit 20 sec max 3 mm unless prevailing conditions demand shorter maxes prop Astro does windmill after power cuts timing motor runs should no problem As Astro motor will run about 90 sec full charge youll have rig up timer operate switch 5 1/2 x 3 Nylon prop recommended free-flight duration models scale models 6 x 3 prop works well shaft diameter 3/16 50 hole must re drilled motor weighs 55 grams 20 oz has diameter 1-3/32 motor body 1-1/4 long overall length cluding shaft 2 battery measures 1-3/16 square 1-7/16 long weighs 63 grams 22 oz Price motor battery package $1995 Ni-CD battery supplied 02FF charged 6-volt lead-acid motorcycle battery 15 minutes will supply enough juice several flights resistance wire leadsa fraction ohmlimits ini tial charge current S amps After 30 sec current drops 2 amps gradually tapers off about 1 amp voltage Ni-Cd battery builds up Astro supplies chargingcord kit consisting wire clips motorcycle battery plug other end addition receptacle switch go airplane $595 long run however might better off laying out $2495 Astros Quick Charger consisting leads connectors ammeter clockwork timer operated switch plus appropriate packaging timer will prevent disastrous overcharge meter will let know whats happen ing hobby shop should able supply Astro 02FF accessories order di rectly Astro Flight Inc 13377 Beach Ave Venice CA 90291 New Nose Good News Now production all-new Oliver cast-aluminum-alloy pan intended principally Rossi 15 FAI Power engine will fit other FAI Class Class B engines well Ken Oliver held weight 48 gramsless 2 ozbut fillets engine lugs generously proportioned cast-in boss provided music wire landing skid set screw secure back part continued page 73 August1975 37 FF Duration continued page 37 attaches fuselage round bottom can furnished either round square top outer contour fairs per fectly Brokenspar Brake cast-in line shows cut pan off brake fitted pan available imme diate delivery Doug Galbraith 707 Sec ond St Davis Calif 95616 Price $7 postpaid Oliver pan accepts Rossi 15 Supertigre FR RR 15 Supertigre 19 23 engines well Pan weighs 48 grams Prestigious NFFS Awards 1975 recip ients its ten free-flight model awards 75 have just announced hy National Free Flight Society Almost interesting win ners themselves extent NFFS goes insure hest have chosen Its study depth really made three commit tees consisting about IS members 12 consultants selections reviewed AMA Gas Events Half-A B C FAI Power Wakefield Coupe DHiver Indoor Duration Hand Launch Glider Unlimited Ruhher Rocket Jetex Bill Bob Hunter Raymond Red Johnson International Classes FAI Bill Gieskieng Satellite 226 Tartar 800 Development Flapper Concept exemplified Siren-Dippity John GardMonarch Roger Jean Louis GarrigouGarricoupe Indoor Hand Launch Glider Erv RodemskyMonster Steve GeraghtyDriftwould Special Classes George Perryman Don Chancey Hans Seelig executive committee Bob Stalick Hardy Brodersen Hewitt Phillips models designs judged according success competition long term impact sport aesthetic qualities popularity among other criteria awards associated Eighth NFFS Symposium held Nats August cooperation AMA will covered story form NFFS Symposium Report Construction drawings will available sale NFFSs Plans Service winners noted above Variation theme Ian Dowsetts Hawk ginner model used promotion British TV program Model World closely patterned after Delta Dart designed Frank Ehling 10 scheduled programs two dealt Little Daddy Canned Heat Seelig Multi-Function Timers model aircraft Thanks Ron Moulton information photo August 1975 73 GREATEST R/C Design & Kit ALL TIME AAmco Inc humbly say no more
Edition: Model Aviation - 1975/08
Page Numbers: 36, 37, 73
Edition: Model Aviation - 1975/08
Page Numbers: 36, 37, 73
Free Flight Duration author has understandable soft spot onei 940 oldtimer designed 18 Bottom Parsons won 4-sec run flyoffs thanks prop brakestops within milliseconds UTTII Bob Meuser ee Flight Spokee dig Free Flight want learn about suggest consider joining following organizations National Free-Flight Society NFFS National door Model Aviation Society NIMAS Society Antique Modelers SAM NIMAS oldest bunch sparkplugged Bud Tenny Its monthly publica tiona minimum four pagesgives results recent contest happenings latest national records schedule forthcom ing indoor meets lots hints tips four three-views outstanding models US abroad Annual dues clude subscription its publication Indoor News Views cost $350 Write Bud Tenny Box 545 Richardson TX 75080 SAM riding crest nostalgia wave seems have inundated phases lives fastest growing bunch Its publication SAM Speaks bi-monthly af fair containing 16 small info-packed pages news about Old-Timer happenings latest Old-Timer kits would believe lat est spark-ignition engines refuse call ignition engines Id call twostroke engine two-cycle engine SAM puts its own NATS runs occasional postal contests Latest innovation Old-Timer movement should pardon expression radio assisted FF OT FF RC promises combine best both worlds Dues subscription $300/year SAM 1947 Superior Aye Whiting md 46394 F L EL EL V IL V iLIzE wNIOR NATIONSL RR0 1940 NFFS largest bunch AMAaffiliated non-profit organization purpose preserve enhance promote sport hobby Free Flight Model Aviation its forms Man cant knock Its monthly publication Free Flight affectionately called Digest contains 12 jam-packed family-size pages latest best news information about phases Free Flight encompassing indoor old-timer scale sport standard AMA gas rubber glider events gung-ho international FAI com petition events Only extreme modesty dis suades describing truly great really addition NFFS presents its annual Symposiumnow its eighth running covering latest tech stuff addition its ten Model Year awards outstand ing FF models cannot fail mention its ongoing Juniors program its sponsorship unofficial FF NATS events represent growingsometimes perhaps dyingedge FF promising too seldom design competition models bridge gap tween Delta Dart real stuff critical involvement both Indoor Outdoor FAI team selection programs planning run ning FF events NATS eyeball-toeyeball confrontations AMA headquar ters areas seem disagreeor least cant seem understand other sorts good stuff Dues subscrip tion $6 per annum AMA members $11 two less Juniors Seniors write NFFS 431 Scandia Aye Des Moines Iowa 50315 Editor national model aviation mag azine wont name recently stated Free Flight began will end dont know about meanwhile Free Flight helluva nice place live NIMAS SAM NFFS will help keep way Most stories about free flight contests Taft Calif have mentioned searing dry heat dust dust devils booming thermals vicious downdrafts may accurate descrip tion period between Memorial Day Labor Day November becomes big lie lift drift downdrafts light light grass covers field peak temperatures mill-seventies homed toads have migrated Australia whatever Last November Taft hosted pompously titled Tenth Annual International Challenge Western Free Flight Association Tra ditionally two-day FAI-events-only af fair Three rounds held Saturday starting 2 pm four Sunday starting 8 am nice arrangement living five hours away Ten entered FAI Power event end seven regular rounds usual factors taken toll five Ed Carroll has won FAI Power event twice recent US Free Flight Champion ships John Warren top man last FAI Team Selection Semi-Finals Ken Oliver until recently held AMA rec ord event George Foster has sur vived cut made Finals last three times Dave Parsons who. lets just say has shown promise flyoff flights lots drawn flyers fire up engines launch succession As appointed hour first flyoff approached light thermal ac tivity first off got its full benefit Oliver last off missing 180-sec max 28 sec Foster exceeded allotted 8-sec engine run three three Warren Carroll Parsonsall maxed following flyoff 6-second engine runs what final flyoff 4-sec engine runs three took off rapid succession Carroll Warren engine over-runs Parsons model equipped prop brake built father Larry pat terned after prototypes manufac tured Hardy Brodersen Some Parsons improvements will appear production ver 36 Model Aviation sion device stops prop within few milliseconds after engine flooded off otherwise prop coasts better part second Since engine-run timing continues until prop stops coasting can disastrous 4-sec engine run Clearly model goes nine straight max flights FAI Power particularly decreasing engine runs demanded 1974 rules have changed 1975 has pretty good since Carroll War ren over-runs would stretching things lot say Dave won because superior model However consider Daves time last flight 157 sec full 30 sec better Carrolls Warrens despite over-runs Still flight doesnt prove anything could have factors affected flight time did meet eye other evidence however indi cates Daves model glides least well perhaps better best models field rate climb up best Check airfoil section shown three-view blunt leading edge doesnt look fast perhaps air doesnt see way certainly different typical thin high rather pointed leading edges seen FAI Power models few notable exceptions some notes about construction Daves Cathexis Ribs 3/32 sheet spaced 2-1/2 in main panels 2-5/8 tips ribs capped top 1/16 x 1/4 strips main panels / 16 x 3/16 tips Leading edge sheeting 1/16 Spars 1/8 x 3/8 main panels 1/8 x 1/4 tips Spar webbing 1/8 sheet grain running vertically Tip ribs splayed out 40 degrees vertical Fuselage longerons 1/8 x 1/2 sides 1/8 sheet auto-stab mechanism simple invented Larry Parsons shown column February 1972 AAM Rossi 15 engine Seelig timer course angle incidence wing 2 deg Stabilizer angles zero during climb minus deg during glide CG 65 67 percent root chord Stay tuned column next thrill ing episode about Daves trick airfoil has interesting heritage Newest Old-Timer Ah pleasant bask light ones own glory alas being color-fast glory fades rapidly day hero scarcely third cen tury later just another. pretty face ah pleasant see someone last receive recognition richly deserves. cially its latest addition John Pondd Old-Time Plan Service Cloud-Chopper II Bob Meuser age 18 set national record CGas Hydro back 1940 Plans show details both three-float gear interchang able single-wheel gear good ship might have great great flier Polywog fuselage shape influenced article W Hewitt Phillips showing such shape has less drag conven tional shapes according wind tunnel tests did MIT Slab-sided sheet-covered fuselage fairly easy build Tip ribs easily faked slide-the-template routine indicated plans rather plotting rib individ ually Sheet covered leading edge bit bother surely makes tough Plans price paltry $150 plus l5 handling Old Time Plans Service Box 3113 San Jose CA 95156 John Pond will sell plans virtually model published kitted during Golden Era modeling John has three book lets selling 75 available plans listed rubber-power models towline gliders second flying scale models third gassies scale list includes some modern ones addition oldies-but-goodies FF Gas rubberpower configurations R/C C/L boot All-balsa tail-first gassie sportater Carl Taylor latest long line successful sport competition modMs Taylor photol Backward Child would expect lawof-averages ensure person would get tail correct end airplane about half time Carl Taylor come out tail first Nordic gliders competition gas models everything claims intentional Carls latest nifty Cox Tee Dee 01 powered all-sheet sport model Peanut Gas could knock out Hot Stuff setting serious modeling efforts Electric FE NATS though elec tric propulsion may never have turned before might well turned recent turn events Astro Flight recently introduced Astro 02FF power unitone designed especially Free Flightto complement line also includes O2RC 05 10 25 power units charger model kits especially electric propulsion Previous Astro systems have aimed R/C market motors must run least 5 mm charge Free Flight shorter motor runs order weight bat tery pack can decreased 02FF du ration models having 220 250 sq wing area weighing 8 oz under recom mended performance such model should refreshing switch kind able obtain toy units flying scale somewhat larger models rec ommended Tentatively National Free Flight Society intends sponsor three electric propulsion events Mattel/Monogram Super Star units unlimited eventthose two also held last yearand models powered Astro 02FF units Astro will supply trophies through third place Motor run limit 20 sec max 3 mm unless prevailing conditions demand shorter maxes prop Astro does windmill after power cuts timing motor runs should no problem As Astro motor will run about 90 sec full charge youll have rig up timer operate switch 5 1/2 x 3 Nylon prop recommended free-flight duration models scale models 6 x 3 prop works well shaft diameter 3/16 50 hole must re drilled motor weighs 55 grams 20 oz has diameter 1-3/32 motor body 1-1/4 long overall length cluding shaft 2 battery measures 1-3/16 square 1-7/16 long weighs 63 grams 22 oz Price motor battery package $1995 Ni-CD battery supplied 02FF charged 6-volt lead-acid motorcycle battery 15 minutes will supply enough juice several flights resistance wire leadsa fraction ohmlimits ini tial charge current S amps After 30 sec current drops 2 amps gradually tapers off about 1 amp voltage Ni-Cd battery builds up Astro supplies chargingcord kit consisting wire clips motorcycle battery plug other end addition receptacle switch go airplane $595 long run however might better off laying out $2495 Astros Quick Charger consisting leads connectors ammeter clockwork timer operated switch plus appropriate packaging timer will prevent disastrous overcharge meter will let know whats happen ing hobby shop should able supply Astro 02FF accessories order di rectly Astro Flight Inc 13377 Beach Ave Venice CA 90291 New Nose Good News Now production all-new Oliver cast-aluminum-alloy pan intended principally Rossi 15 FAI Power engine will fit other FAI Class Class B engines well Ken Oliver held weight 48 gramsless 2 ozbut fillets engine lugs generously proportioned cast-in boss provided music wire landing skid set screw secure back part continued page 73 August1975 37 FF Duration continued page 37 attaches fuselage round bottom can furnished either round square top outer contour fairs per fectly Brokenspar Brake cast-in line shows cut pan off brake fitted pan available imme diate delivery Doug Galbraith 707 Sec ond St Davis Calif 95616 Price $7 postpaid Oliver pan accepts Rossi 15 Supertigre FR RR 15 Supertigre 19 23 engines well Pan weighs 48 grams Prestigious NFFS Awards 1975 recip ients its ten free-flight model awards 75 have just announced hy National Free Flight Society Almost interesting win ners themselves extent NFFS goes insure hest have chosen Its study depth really made three commit tees consisting about IS members 12 consultants selections reviewed AMA Gas Events Half-A B C FAI Power Wakefield Coupe DHiver Indoor Duration Hand Launch Glider Unlimited Ruhher Rocket Jetex Bill Bob Hunter Raymond Red Johnson International Classes FAI Bill Gieskieng Satellite 226 Tartar 800 Development Flapper Concept exemplified Siren-Dippity John GardMonarch Roger Jean Louis GarrigouGarricoupe Indoor Hand Launch Glider Erv RodemskyMonster Steve GeraghtyDriftwould Special Classes George Perryman Don Chancey Hans Seelig executive committee Bob Stalick Hardy Brodersen Hewitt Phillips models designs judged according success competition long term impact sport aesthetic qualities popularity among other criteria awards associated Eighth NFFS Symposium held Nats August cooperation AMA will covered story form NFFS Symposium Report Construction drawings will available sale NFFSs Plans Service winners noted above Variation theme Ian Dowsetts Hawk ginner model used promotion British TV program Model World closely patterned after Delta Dart designed Frank Ehling 10 scheduled programs two dealt Little Daddy Canned Heat Seelig Multi-Function Timers model aircraft Thanks Ron Moulton information photo August 1975 73 GREATEST R/C Design & Kit ALL TIME AAmco Inc humbly say no more
Edition: Model Aviation - 1975/08
Page Numbers: 36, 37, 73
Free Flight Duration author has understandable soft spot onei 940 oldtimer designed 18 Bottom Parsons won 4-sec run flyoffs thanks prop brakestops within milliseconds UTTII Bob Meuser ee Flight Spokee dig Free Flight want learn about suggest consider joining following organizations National Free-Flight Society NFFS National door Model Aviation Society NIMAS Society Antique Modelers SAM NIMAS oldest bunch sparkplugged Bud Tenny Its monthly publica tiona minimum four pagesgives results recent contest happenings latest national records schedule forthcom ing indoor meets lots hints tips four three-views outstanding models US abroad Annual dues clude subscription its publication Indoor News Views cost $350 Write Bud Tenny Box 545 Richardson TX 75080 SAM riding crest nostalgia wave seems have inundated phases lives fastest growing bunch Its publication SAM Speaks bi-monthly af fair containing 16 small info-packed pages news about Old-Timer happenings latest Old-Timer kits would believe lat est spark-ignition engines refuse call ignition engines Id call twostroke engine two-cycle engine SAM puts its own NATS runs occasional postal contests Latest innovation Old-Timer movement should pardon expression radio assisted FF OT FF RC promises combine best both worlds Dues subscription $300/year SAM 1947 Superior Aye Whiting md 46394 F L EL EL V IL V iLIzE wNIOR NATIONSL RR0 1940 NFFS largest bunch AMAaffiliated non-profit organization purpose preserve enhance promote sport hobby Free Flight Model Aviation its forms Man cant knock Its monthly publication Free Flight affectionately called Digest contains 12 jam-packed family-size pages latest best news information about phases Free Flight encompassing indoor old-timer scale sport standard AMA gas rubber glider events gung-ho international FAI com petition events Only extreme modesty dis suades describing truly great really addition NFFS presents its annual Symposiumnow its eighth running covering latest tech stuff addition its ten Model Year awards outstand ing FF models cannot fail mention its ongoing Juniors program its sponsorship unofficial FF NATS events represent growingsometimes perhaps dyingedge FF promising too seldom design competition models bridge gap tween Delta Dart real stuff critical involvement both Indoor Outdoor FAI team selection programs planning run ning FF events NATS eyeball-toeyeball confrontations AMA headquar ters areas seem disagreeor least cant seem understand other sorts good stuff Dues subscrip tion $6 per annum AMA members $11 two less Juniors Seniors write NFFS 431 Scandia Aye Des Moines Iowa 50315 Editor national model aviation mag azine wont name recently stated Free Flight began will end dont know about meanwhile Free Flight helluva nice place live NIMAS SAM NFFS will help keep way Most stories about free flight contests Taft Calif have mentioned searing dry heat dust dust devils booming thermals vicious downdrafts may accurate descrip tion period between Memorial Day Labor Day November becomes big lie lift drift downdrafts light light grass covers field peak temperatures mill-seventies homed toads have migrated Australia whatever Last November Taft hosted pompously titled Tenth Annual International Challenge Western Free Flight Association Tra ditionally two-day FAI-events-only af fair Three rounds held Saturday starting 2 pm four Sunday starting 8 am nice arrangement living five hours away Ten entered FAI Power event end seven regular rounds usual factors taken toll five Ed Carroll has won FAI Power event twice recent US Free Flight Champion ships John Warren top man last FAI Team Selection Semi-Finals Ken Oliver until recently held AMA rec ord event George Foster has sur vived cut made Finals last three times Dave Parsons who. lets just say has shown promise flyoff flights lots drawn flyers fire up engines launch succession As appointed hour first flyoff approached light thermal ac tivity first off got its full benefit Oliver last off missing 180-sec max 28 sec Foster exceeded allotted 8-sec engine run three three Warren Carroll Parsonsall maxed following flyoff 6-second engine runs what final flyoff 4-sec engine runs three took off rapid succession Carroll Warren engine over-runs Parsons model equipped prop brake built father Larry pat terned after prototypes manufac tured Hardy Brodersen Some Parsons improvements will appear production ver 36 Model Aviation sion device stops prop within few milliseconds after engine flooded off otherwise prop coasts better part second Since engine-run timing continues until prop stops coasting can disastrous 4-sec engine run Clearly model goes nine straight max flights FAI Power particularly decreasing engine runs demanded 1974 rules have changed 1975 has pretty good since Carroll War ren over-runs would stretching things lot say Dave won because superior model However consider Daves time last flight 157 sec full 30 sec better Carrolls Warrens despite over-runs Still flight doesnt prove anything could have factors affected flight time did meet eye other evidence however indi cates Daves model glides least well perhaps better best models field rate climb up best Check airfoil section shown three-view blunt leading edge doesnt look fast perhaps air doesnt see way certainly different typical thin high rather pointed leading edges seen FAI Power models few notable exceptions some notes about construction Daves Cathexis Ribs 3/32 sheet spaced 2-1/2 in main panels 2-5/8 tips ribs capped top 1/16 x 1/4 strips main panels / 16 x 3/16 tips Leading edge sheeting 1/16 Spars 1/8 x 3/8 main panels 1/8 x 1/4 tips Spar webbing 1/8 sheet grain running vertically Tip ribs splayed out 40 degrees vertical Fuselage longerons 1/8 x 1/2 sides 1/8 sheet auto-stab mechanism simple invented Larry Parsons shown column February 1972 AAM Rossi 15 engine Seelig timer course angle incidence wing 2 deg Stabilizer angles zero during climb minus deg during glide CG 65 67 percent root chord Stay tuned column next thrill ing episode about Daves trick airfoil has interesting heritage Newest Old-Timer Ah pleasant bask light ones own glory alas being color-fast glory fades rapidly day hero scarcely third cen tury later just another. pretty face ah pleasant see someone last receive recognition richly deserves. cially its latest addition John Pondd Old-Time Plan Service Cloud-Chopper II Bob Meuser age 18 set national record CGas Hydro back 1940 Plans show details both three-float gear interchang able single-wheel gear good ship might have great great flier Polywog fuselage shape influenced article W Hewitt Phillips showing such shape has less drag conven tional shapes according wind tunnel tests did MIT Slab-sided sheet-covered fuselage fairly easy build Tip ribs easily faked slide-the-template routine indicated plans rather plotting rib individ ually Sheet covered leading edge bit bother surely makes tough Plans price paltry $150 plus l5 handling Old Time Plans Service Box 3113 San Jose CA 95156 John Pond will sell plans virtually model published kitted during Golden Era modeling John has three book lets selling 75 available plans listed rubber-power models towline gliders second flying scale models third gassies scale list includes some modern ones addition oldies-but-goodies FF Gas rubberpower configurations R/C C/L boot All-balsa tail-first gassie sportater Carl Taylor latest long line successful sport competition modMs Taylor photol Backward Child would expect lawof-averages ensure person would get tail correct end airplane about half time Carl Taylor come out tail first Nordic gliders competition gas models everything claims intentional Carls latest nifty Cox Tee Dee 01 powered all-sheet sport model Peanut Gas could knock out Hot Stuff setting serious modeling efforts Electric FE NATS though elec tric propulsion may never have turned before might well turned recent turn events Astro Flight recently introduced Astro 02FF power unitone designed especially Free Flightto complement line also includes O2RC 05 10 25 power units charger model kits especially electric propulsion Previous Astro systems have aimed R/C market motors must run least 5 mm charge Free Flight shorter motor runs order weight bat tery pack can decreased 02FF du ration models having 220 250 sq wing area weighing 8 oz under recom mended performance such model should refreshing switch kind able obtain toy units flying scale somewhat larger models rec ommended Tentatively National Free Flight Society intends sponsor three electric propulsion events Mattel/Monogram Super Star units unlimited eventthose two also held last yearand models powered Astro 02FF units Astro will supply trophies through third place Motor run limit 20 sec max 3 mm unless prevailing conditions demand shorter maxes prop Astro does windmill after power cuts timing motor runs should no problem As Astro motor will run about 90 sec full charge youll have rig up timer operate switch 5 1/2 x 3 Nylon prop recommended free-flight duration models scale models 6 x 3 prop works well shaft diameter 3/16 50 hole must re drilled motor weighs 55 grams 20 oz has diameter 1-3/32 motor body 1-1/4 long overall length cluding shaft 2 battery measures 1-3/16 square 1-7/16 long weighs 63 grams 22 oz Price motor battery package $1995 Ni-CD battery supplied 02FF charged 6-volt lead-acid motorcycle battery 15 minutes will supply enough juice several flights resistance wire leadsa fraction ohmlimits ini tial charge current S amps After 30 sec current drops 2 amps gradually tapers off about 1 amp voltage Ni-Cd battery builds up Astro supplies chargingcord kit consisting wire clips motorcycle battery plug other end addition receptacle switch go airplane $595 long run however might better off laying out $2495 Astros Quick Charger consisting leads connectors ammeter clockwork timer operated switch plus appropriate packaging timer will prevent disastrous overcharge meter will let know whats happen ing hobby shop should able supply Astro 02FF accessories order di rectly Astro Flight Inc 13377 Beach Ave Venice CA 90291 New Nose Good News Now production all-new Oliver cast-aluminum-alloy pan intended principally Rossi 15 FAI Power engine will fit other FAI Class Class B engines well Ken Oliver held weight 48 gramsless 2 ozbut fillets engine lugs generously proportioned cast-in boss provided music wire landing skid set screw secure back part continued page 73 August1975 37 FF Duration continued page 37 attaches fuselage round bottom can furnished either round square top outer contour fairs per fectly Brokenspar Brake cast-in line shows cut pan off brake fitted pan available imme diate delivery Doug Galbraith 707 Sec ond St Davis Calif 95616 Price $7 postpaid Oliver pan accepts Rossi 15 Supertigre FR RR 15 Supertigre 19 23 engines well Pan weighs 48 grams Prestigious NFFS Awards 1975 recip ients its ten free-flight model awards 75 have just announced hy National Free Flight Society Almost interesting win ners themselves extent NFFS goes insure hest have chosen Its study depth really made three commit tees consisting about IS members 12 consultants selections reviewed AMA Gas Events Half-A B C FAI Power Wakefield Coupe DHiver Indoor Duration Hand Launch Glider Unlimited Ruhher Rocket Jetex Bill Bob Hunter Raymond Red Johnson International Classes FAI Bill Gieskieng Satellite 226 Tartar 800 Development Flapper Concept exemplified Siren-Dippity John GardMonarch Roger Jean Louis GarrigouGarricoupe Indoor Hand Launch Glider Erv RodemskyMonster Steve GeraghtyDriftwould Special Classes George Perryman Don Chancey Hans Seelig executive committee Bob Stalick Hardy Brodersen Hewitt Phillips models designs judged according success competition long term impact sport aesthetic qualities popularity among other criteria awards associated Eighth NFFS Symposium held Nats August cooperation AMA will covered story form NFFS Symposium Report Construction drawings will available sale NFFSs Plans Service winners noted above Variation theme Ian Dowsetts Hawk ginner model used promotion British TV program Model World closely patterned after Delta Dart designed Frank Ehling 10 scheduled programs two dealt Little Daddy Canned Heat Seelig Multi-Function Timers model aircraft Thanks Ron Moulton information photo August 1975 73 GREATEST R/C Design & Kit ALL TIME AAmco Inc humbly say no more
