Control Line RA CING John Ballard THIS MONTH want talk about Modified Racingthat standard AMA events local modifications have getting more mail concerning speeds events like Rat Raee Slow Rat have reduced specific rules particular locale received letter WAM Western Associated Modelers enclosed some photos concerning August 8 1982 contest Apparently some time have flying Fast Rat event mufflers mufflers must attached either side-exhaust rear-exhaust engines have made substantial reduction performance well noise have also initiated 29 class called Class B Rat using same type aircraft course reduced airspeed attended another contest conducted Circle Masters Milwaukee WI middle October 1 realized fall starts early month temperatures high Forties actually eliminate use 70% nitro drop approximately 40% nitro increased amount alcohol keep engine lit particular contest Sport Race event run 10% nitro fuel supplied contest management could get 10% fuel either castor oil Klotz oil par ticipant preference approxi mately 20 Sport Race entries largest entry four Racing events National Control Line Coalition appar ently off flying start Dr Laird Jackson has sent following information about organization am sure Doe would like hear Racing enthusiasts National Control Line Coalition de veloping organization intended provide rep resentative body Control Line fliers use word coalition meant convey temporary nature present arrangement presidents Control Line Speed Stunt Com bat Carrier Racing groups constitute ex ecutive board has power direct growth activity coalition including changing name desire intent provide means Control Line have ability speak voice author ity AMA anyone else matters interest Control Line group flier groups represented no interest needs left out Control Line matter can receive benefit increased numbers members behind decision request group newsletter Gozeue carry news technical information reports interest achievement-recognition Control Line groups contribute its content fair distribution coverage interests Much content depends availability con tributions Eventual editorial policy should de termined between editor Executive Board newsletter has international audience needs new subscribers list has yet rec eovered gap publishing oc curred 1981 newsletter will achieve regular monthly schedule late 1982 min imum 8 pages maximum dependent Continued page 170 May 1983 71 Rat Racer lineup pit area Los Setos CA WAM club rats have muffled pipes Photo Norma Diaz Glenn Lee prepares Slow Rat final heat Circle Masters contest Milwaukee WI Note hes using prototype GloBee Fireplug glow batteries white plastic case appears still going strong Larry Dziak holds fuel bulb adjusts needle Slow Rat Bill Hughes restrains Larry uses K & B 65s Slow Rats Bob Boling about launch muffler-equipped Fast Rat Hes wearing hard hat required pit men WAM rules speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation
Edition: Model Aviation - 1983/05
Page Numbers: 71, 170
Control Line RA CING John Ballard THIS MONTH want talk about Modified Racingthat standard AMA events local modifications have getting more mail concerning speeds events like Rat Raee Slow Rat have reduced specific rules particular locale received letter WAM Western Associated Modelers enclosed some photos concerning August 8 1982 contest Apparently some time have flying Fast Rat event mufflers mufflers must attached either side-exhaust rear-exhaust engines have made substantial reduction performance well noise have also initiated 29 class called Class B Rat using same type aircraft course reduced airspeed attended another contest conducted Circle Masters Milwaukee WI middle October 1 realized fall starts early month temperatures high Forties actually eliminate use 70% nitro drop approximately 40% nitro increased amount alcohol keep engine lit particular contest Sport Race event run 10% nitro fuel supplied contest management could get 10% fuel either castor oil Klotz oil par ticipant preference approxi mately 20 Sport Race entries largest entry four Racing events National Control Line Coalition appar ently off flying start Dr Laird Jackson has sent following information about organization am sure Doe would like hear Racing enthusiasts National Control Line Coalition de veloping organization intended provide rep resentative body Control Line fliers use word coalition meant convey temporary nature present arrangement presidents Control Line Speed Stunt Com bat Carrier Racing groups constitute ex ecutive board has power direct growth activity coalition including changing name desire intent provide means Control Line have ability speak voice author ity AMA anyone else matters interest Control Line group flier groups represented no interest needs left out Control Line matter can receive benefit increased numbers members behind decision request group newsletter Gozeue carry news technical information reports interest achievement-recognition Control Line groups contribute its content fair distribution coverage interests Much content depends availability con tributions Eventual editorial policy should de termined between editor Executive Board newsletter has international audience needs new subscribers list has yet rec eovered gap publishing oc curred 1981 newsletter will achieve regular monthly schedule late 1982 min imum 8 pages maximum dependent Continued page 170 May 1983 71 Rat Racer lineup pit area Los Setos CA WAM club rats have muffled pipes Photo Norma Diaz Glenn Lee prepares Slow Rat final heat Circle Masters contest Milwaukee WI Note hes using prototype GloBee Fireplug glow batteries white plastic case appears still going strong Larry Dziak holds fuel bulb adjusts needle Slow Rat Bill Hughes restrains Larry uses K & B 65s Slow Rats Bob Boling about launch muffler-equipped Fast Rat Hes wearing hard hat required pit men WAM rules speed back up again because creased diameter Therefore propulsive efficiency down again resulting need engine power output 239 bhp very doubtful could ever get kind performance out 15 cu engine What really trying show interrelation between number blades prop amount thrust trying get constant values rpm airspeed Note chief enemy high tip speed propthe propulsive ef ficiency gets lots lower tip speeds get up around 1000 ft/sec Also evident fact weve got have clean model have hope getting high speeds power available 15 discussion will continued next column Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 71 subsejiber support contributions Picture qual ity excellent Ads planned limited materials interest Control Line smaller suppliers Computer-filed supplier lists member ship lists like will available Full-sized plans will available models published Copies technical reports etc planned future availability selected hard-to-get spe cialty supplies etc Frankly experiment see Control Line really dead way some people say dont think Write support Coalition concept refuse believe Control Line gone sample copy 37g stamp & envelope subscriptioni $15/yr Laird Jackson 2322 Wil son Ave Bristol PA 19007 Editors note subscription price persons aged 19 years older plus residents foreign countries Persons age 18 younger can subscribe $750/year Both subscription rates include 50 NCLC membership fee RMcM received copy Flying Lines excellent Northwestern newsletter published Mike Hazel 1411 Bryant Ave Cottage Grove OR 97424 particular newsletter virtually full con test results random building tips flea market items soapbox opinionated modelers Mike also periodically has rating system Northwestern Iliers rates contest performance throughout year newsletter certainly gives observation competitors doing Northwest area provides some interesting reading Racing competitors John Ballard 10102 Kimblewick Dr Louis ville KY 40223 Lii Pieces/Randolph Continued page 74 two tissue tubes airplane completed method wing mounting makes possible adjust incidence well remove wing storage Incidentally airplane another just like will fit shoe box ease Cover surfaces tissue glue stick sold stationery stores school supply sections other stores makes good adhesive tissue glue stick easy clean use doesnt wet tissue structure After covering rudder stab glue stab place above rudder boom left tip about /2 higher right seen back helps airplane circle left Cover wing center first glue tips place proper dihedral glue has set cover tips Cut two wing posts balsa dowel front longer back shown plan glue wtng /2 right center Looking front bottom forward post should slanted slightly left centeror towards right wing posts inserted tubes will cause some washin left wing leading edge higher trailing edge Cut propeller blades 1/32 sheet Drill carve piece 3/32 sq balsa shown plans form hub glue blades place should right angles other 450 angle shaft Bend shaft 1/32-in wire glue prop hub Slip small glass bead over shaft insert shaft front bearing rotate little until slips rear bearing Place loop rublr motor stick prop/stab/rudder assemblage find center balance looping thread around motor stick moving fore aft until balance point found Mark spot Cut two tissue tubes /4-in length piece balsa dowel dont crush Glue motor stick front tube should 11/4 ward mark aft 2 behind first sure straight up down flat against motor stick airplane now complete best rubber motor airplane/ prop combination 10- 12-in loop 040 x 043-in FAI Rubber isnt available loop three #16 rubberbands together thats skinny kind comes wrapped around newspaper Lubricate rubber motor little Armor-All stretch out about five times its length hold minute two stretching will break rubber make possible wind few extra turns Slip wing posts tissue tubes way bottom Install rubber motor wind about 100 turns launch model should have sort powered glide rather tight flat circle no sign stall model dives raise front wing post tube stalls raise aft post correct rubber motor can best wound unhooking rear hook attach ing geared winder stretching rubber out about three times its length pack ing turns winder moved back original length motor newspaper rubberbands will take about 800 turns good contest rubber about 1500 Beamed ceilings arent good flat smooth ones let Lil Pieces gather lot cobwebs Thrill/Younger Continued paqe 75 best ways introduce boys girls modeling teach class build fly Delta Dart simple almost fool-proof novice builder can build hour can buy inexpensively large quantities Complete instructions included kit have helped teach about 30 classes can assure piece cake modeler cati classes taught can 170 Model Aviation