Control Line Combat Charlie Johnson UPON MY return World Cham pionships received pleasant surprise Phil Cartier form almostready-to-fly FAI combat model planes shipped heavy cardboard boxes plywood reinforcement sides avoid having crushed critter Mine arrived perfect condition wing already covered controls installed motor mount monoboom tail painted ready epoxy place dowel motor mount pushrod horn adjustable link furnished Assembly takes about half hour would good idea use slow-dry epoxy maximum strength case model should cure over night Assembly could done flying field have access soldering gun power supply completed plane weighed 15 ounces Fox 15 Tornado 7-4 white prop bladder no fuel No trimming necessary except add couple turns down control linkage No warps flys right off board out box Fox runs best about 50% nitro power makes better flight Handling predictable planes tight turning radius helps get out trouble get over head Consecutive loops U-turns wiggles top speed 100 mph acceptable What plane doesnt last season sport flying competition airplane will last through enough matches get moneys worth fatigue does set after several dozen flights especially break bladder did sample did have bladder tube think would good idea install Phil may put new planes after experience Frosts plane World Championship breaking two bladders match Fox insensitive needle settings Rossi may give trouble highpressure bladder alternative Id suggest would use pacifier tempted install pod test plane left stock Heavy-handed pitmen should steer clear model too trailing edge reinforced can damaged held against body balsa tip ribs handy hanging ad ditional weight think need windy weather pull Youll notice difference handling between beginning flight full load fuel end plane hinges less hard turns pacifier pod would minimize difference Check MACA Newsletter latest information price availability model AMA Combat events have plusor-minus line length could add up foot differences between opposing models much leeway youll find contestants using improper length lines Over years Ive found contestants will use whatever have means being disadvantage short lines Lax processing meets Continued page 101 40 Model Aviation Mike Petri launches Gary Kearns Whittier meet Brasher moves out way Kearns uses Rotation Station good advantage lost Brasher final Johnson pic Pete tnans Herr ano oteve nu wni ships Good performers Fox 36 power Foam becoming popular Johnson pic HG K-powered Samurai byJoHsu Wa Broad-range pipe maybe answerto noise problem Lopez pic SPITFIRE Still best combination ot looks & performance buy Nobody ever designed elegant ship Spitfire model flies superbly has won countless standoff scale contests standard kit builds Mk 9 Plan includes details other Marks like beautiful Mk 22 Kit features Machined diecut balsa formed LG nylon fittings metal parts & mouldings Two full-size plans complete radio & retract gear installation shown Isometric diagram & illustrated instructions make building easy fun Six-color accurate decals Span 65 Area 714 Sq 4 6 channel Engine 40 60 Nats first weekend October 1 back Ft Worth turned 532 pat myself back scene lead-in few words fast Goodyears Right now some real good run ning planes country several con sistently low 15s couple 14s Im fortunate have reg ularly running 145 148 seconds /2 mile does go cotton-pickin fast tell truth dont know have some ideas Ill pass along might look pictures col umn Engine run old small-crank Rossi originally set up George Aldrich switched ABC piston liner two years ago feel best set-up liner/piston completely stock two got last winter Bud Harris also feel small crank Rossi superior engine later large crank versions can keep together So far knock wood have yet blown up engines Second prop have using Kelly fiberglass props several years Initially used Tornado nylon 7-6 cut about 6- quite competitive five years ago first 7-6 props Kelly produced fiberglass copy Tornado nylon found merely switching nylon glass worth about 5 sec day race ticked prop pit found about other nd later measurement showed diameter down about 6 e used Riverside 77 placing fifth Well year built new plane went out early May test last years prop going about 153 1 couple Kellys new props Wil loughby 6/4-5 actually 6-6 measured prop prop Stew Willoughby used Riverside basically thinnedblade version Kelly Tornado equiv alent switched prop stock new plane immediately went 148 Props its Third plane Goodyears have somewhat unique over years have built last six years totally internal controls pushrod control horn everything have consis tently striven make airplane slip pery possible building land ing gear fuselage out air believe new plane best far except quick-fill tube everything could cause serious drag hidden behind engine built inside profile fuselage dont know items terribly important taken individually total combination works planes performance will attest W R Lee 3522 Tamarisk Lane Mis souri City TX 77459 CL Combat/Johnson continued page 40 means fly-aways because greater differences line length Id noticed certain fliers always involved fly aways upon close inspection found invariably stood several feet behind other person zeroed lines Some pilots use outboard wing foam model snag string cuts through foam locks assure kill pictures shows good example Streamers also big problem con tests Light string doesnt cause damage models wrap up engines has other drawbacks shock hitting crepe paper often broke string some times broke just stress 100 mph speeds 140-mph for. Texans Heavy string down center streamer way go rolling up streamers always hassle Bill Allen uses clothes pin arrangement low-speed drill Just insert end streamer apply power very lit tle effort have nicely rolled streamer Taped streamers stand up rainy weather usually require prop cut Note new crepe paper 8 feet dont mix em up old 10-foot variety Also sure leave enough string ahead mark tie securely plane Differential propsfact fiction first heard about MACA Newsletter few months back thought someone pulling leg Aero Challenge cornered Bob Burch found out straight scoop scoop may needed Seems prop-making machine pro ducing props h blade other pylon racers true up hub anyway could have cared less combat lads found prop worked better left differential pitch Top-end speed supposed enhanced higher pitch blade turns better because lower-pitch blade Props funny things air argument theory good anyone elses theory theories has always little possible scientifically youll get hung up experiments forget about what youre doing flying combat bash em-crash em event like lends itself seat-of-thepants research anything very sci entific scientific approach piloting skills would greater value diffe rential pitch props quest free horsepower still since its easier use prop true up blades hope something gained least lost Three props courtesy Bob Burch may help make up mind Write quickly have test results can publish next issue Check out picture tuned pipe FAI combat model may way go noise presents problem future Pipes can designed work over very broad range great boost performance really needed just less noise dependability Charlie Johnson 3716 Ingraham St San Diego CA 92109 SAFE FLYING IS NO ACCIDENT February 1979 101 2657 NE 188th Street Miami Florida 33180 Telephone 935-1436
Edition: Model Aviation - 1979/02
Page Numbers: 40, 101
Edition: Model Aviation - 1979/02
Page Numbers: 40, 101
Control Line Combat Charlie Johnson UPON MY return World Cham pionships received pleasant surprise Phil Cartier form almostready-to-fly FAI combat model planes shipped heavy cardboard boxes plywood reinforcement sides avoid having crushed critter Mine arrived perfect condition wing already covered controls installed motor mount monoboom tail painted ready epoxy place dowel motor mount pushrod horn adjustable link furnished Assembly takes about half hour would good idea use slow-dry epoxy maximum strength case model should cure over night Assembly could done flying field have access soldering gun power supply completed plane weighed 15 ounces Fox 15 Tornado 7-4 white prop bladder no fuel No trimming necessary except add couple turns down control linkage No warps flys right off board out box Fox runs best about 50% nitro power makes better flight Handling predictable planes tight turning radius helps get out trouble get over head Consecutive loops U-turns wiggles top speed 100 mph acceptable What plane doesnt last season sport flying competition airplane will last through enough matches get moneys worth fatigue does set after several dozen flights especially break bladder did sample did have bladder tube think would good idea install Phil may put new planes after experience Frosts plane World Championship breaking two bladders match Fox insensitive needle settings Rossi may give trouble highpressure bladder alternative Id suggest would use pacifier tempted install pod test plane left stock Heavy-handed pitmen should steer clear model too trailing edge reinforced can damaged held against body balsa tip ribs handy hanging ad ditional weight think need windy weather pull Youll notice difference handling between beginning flight full load fuel end plane hinges less hard turns pacifier pod would minimize difference Check MACA Newsletter latest information price availability model AMA Combat events have plusor-minus line length could add up foot differences between opposing models much leeway youll find contestants using improper length lines Over years Ive found contestants will use whatever have means being disadvantage short lines Lax processing meets Continued page 101 40 Model Aviation Mike Petri launches Gary Kearns Whittier meet Brasher moves out way Kearns uses Rotation Station good advantage lost Brasher final Johnson pic Pete tnans Herr ano oteve nu wni ships Good performers Fox 36 power Foam becoming popular Johnson pic HG K-powered Samurai byJoHsu Wa Broad-range pipe maybe answerto noise problem Lopez pic SPITFIRE Still best combination ot looks & performance buy Nobody ever designed elegant ship Spitfire model flies superbly has won countless standoff scale contests standard kit builds Mk 9 Plan includes details other Marks like beautiful Mk 22 Kit features Machined diecut balsa formed LG nylon fittings metal parts & mouldings Two full-size plans complete radio & retract gear installation shown Isometric diagram & illustrated instructions make building easy fun Six-color accurate decals Span 65 Area 714 Sq 4 6 channel Engine 40 60 Nats first weekend October 1 back Ft Worth turned 532 pat myself back scene lead-in few words fast Goodyears Right now some real good run ning planes country several con sistently low 15s couple 14s Im fortunate have reg ularly running 145 148 seconds /2 mile does go cotton-pickin fast tell truth dont know have some ideas Ill pass along might look pictures col umn Engine run old small-crank Rossi originally set up George Aldrich switched ABC piston liner two years ago feel best set-up liner/piston completely stock two got last winter Bud Harris also feel small crank Rossi superior engine later large crank versions can keep together So far knock wood have yet blown up engines Second prop have using Kelly fiberglass props several years Initially used Tornado nylon 7-6 cut about 6- quite competitive five years ago first 7-6 props Kelly produced fiberglass copy Tornado nylon found merely switching nylon glass worth about 5 sec day race ticked prop pit found about other nd later measurement showed diameter down about 6 e used Riverside 77 placing fifth Well year built new plane went out early May test last years prop going about 153 1 couple Kellys new props Wil loughby 6/4-5 actually 6-6 measured prop prop Stew Willoughby used Riverside basically thinnedblade version Kelly Tornado equiv alent switched prop stock new plane immediately went 148 Props its Third plane Goodyears have somewhat unique over years have built last six years totally internal controls pushrod control horn everything have consis tently striven make airplane slip pery possible building land ing gear fuselage out air believe new plane best far except quick-fill tube everything could cause serious drag hidden behind engine built inside profile fuselage dont know items terribly important taken individually total combination works planes performance will attest W R Lee 3522 Tamarisk Lane Mis souri City TX 77459 CL Combat/Johnson continued page 40 means fly-aways because greater differences line length Id noticed certain fliers always involved fly aways upon close inspection found invariably stood several feet behind other person zeroed lines Some pilots use outboard wing foam model snag string cuts through foam locks assure kill pictures shows good example Streamers also big problem con tests Light string doesnt cause damage models wrap up engines has other drawbacks shock hitting crepe paper often broke string some times broke just stress 100 mph speeds 140-mph for. Texans Heavy string down center streamer way go rolling up streamers always hassle Bill Allen uses clothes pin arrangement low-speed drill Just insert end streamer apply power very lit tle effort have nicely rolled streamer Taped streamers stand up rainy weather usually require prop cut Note new crepe paper 8 feet dont mix em up old 10-foot variety Also sure leave enough string ahead mark tie securely plane Differential propsfact fiction first heard about MACA Newsletter few months back thought someone pulling leg Aero Challenge cornered Bob Burch found out straight scoop scoop may needed Seems prop-making machine pro ducing props h blade other pylon racers true up hub anyway could have cared less combat lads found prop worked better left differential pitch Top-end speed supposed enhanced higher pitch blade turns better because lower-pitch blade Props funny things air argument theory good anyone elses theory theories has always little possible scientifically youll get hung up experiments forget about what youre doing flying combat bash em-crash em event like lends itself seat-of-thepants research anything very sci entific scientific approach piloting skills would greater value diffe rential pitch props quest free horsepower still since its easier use prop true up blades hope something gained least lost Three props courtesy Bob Burch may help make up mind Write quickly have test results can publish next issue Check out picture tuned pipe FAI combat model may way go noise presents problem future Pipes can designed work over very broad range great boost performance really needed just less noise dependability Charlie Johnson 3716 Ingraham St San Diego CA 92109 SAFE FLYING IS NO ACCIDENT February 1979 101 2657 NE 188th Street Miami Florida 33180 Telephone 935-1436
