p Helicopters Wall Schoonard SINCE MY LAST column have doing lot testing tail-rotor mix Super-Baby Along efforts have help some interested parties testing has done several points view several types helicopters mix properly set up will work way idle full col lective totally linear first thing to determine value tail-rotor servo pot can asking manufacturer measuring ohm meter servo open solder wire termi nal potred black outer ones white center Run female plug take male side plug make wire ends match other plug ends should about 5 inches long Purchase potentiometer same value tail-rotor servo Preferably pot should like ones trans mitter however shaft-type pot will three remaining wires should soldered potwhite center red black outer pin three wires servo can exit through grommet servo wires coming out may have enlarge hole servo case permit grom met expand Reinstall servo hook up pushrod Note pitch arm tail-rotor pitch plate mark have set center hover should lift off next step mount mix pot helicopter frame made plate 1/16 phenolic end shaped like pot base other end about inch long /8 inch wide Using Zap Hot Stuff glue pot base phenolic bracket locate pot center 2/s inches cockpit-back board horizontal center pot lower opening side frame left side helicopter shaft pot need about long should have screwdriver slot control arm mix pot used long end Top Flite 120-degree bellcrank drilled couple extra 1/16 holes adjustment large hole arm pressed over pot shaft pot bracket clamped place drill hole through bracket other helicopter side plate tap 4-40 secure 4-40 Allen cap screw Cut small hole cockpit-back board feed male plug wires through hole should located interfere collective pushrod Set collective full low mark rod collective about back board Clean spot rod solder tin Cut piece 1/16 ID brass tubing / inch long clean out end solder crosswise horizontal collective pushrod Wrap soft copper wire resolder Set collective half stick pot arm vertical make pushrod drive pot pushrod should / 16 wire threaded coupler soldered end end should have nylon snap clevis screwed onto attached center hole pot arm other end rod should bent 90 degrees go 1/16 brass tubing point pot arm should vertical col lective half stick Now turn radio transmitter trim rudder neutral transmitter plug mix pot Observe rudder servo holding pot-control arm rotate pot shaft screwdriver bring servo neutral Now bring collective low rudder servo should go end end should bring tail-rotor pitch arm forward goes rear low collective two outer pot wires will have reversed centering process redone servo travel proper amount can varied changing pushrod location pot arm moving lower travel can Collective pitch now available owners Shark 60 No modifications required be had less travel moving higher ideal setup should follows collective lift off tail-rotor pitch rod should center pitch plate rudder control should equal right left flying tailrotor pitch should set will face wind hands off collective added tail-rotor pitch added mix pot as- collective reduced tailrotor pitch landing totally remov ing collective tail-rotor pitch should negative will have adjust throws particular machine conditions Super-Baby will sit firmly ground rotating will leap off tail coming around Continued page 82 April 1977 21 new collective pitch head converts Heli-Baby Super-Baby Perfection RC helicopters days great its difficult tell model real thing isolated against sky Bill Youmans Schlutar Gazelle 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st RC Sport Scale 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 AND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL ClassCSpeedSr&Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeedOpSrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BIADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAPITCHPRICE 5%3499 e3499 733%4tie a3%45e129 94599A 77%139 10497149 10eW eW149 106EW159 114e77% 7I7%9159 11eEW199 11%E7i99 129179 125W179 1356219 14se249 1556309 194/9399 W WIDE BLADE 9W EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO1 IN PYLON RACING LEADING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING CIA PITCH PRICE 5%3%4119 7 55/,9 129 7 SN 5AN eN 129 8% 9%9%7 7%7%199 9 9%7 747%199 CONTROL LINE SPEED & RACING DIA PITCH PRICE 4/947119 4%55119 9799%129 77% 10411139 999149 99N 9%N149 9%77%149 91213199 N NARROW ing farther out wedge trying slide farther point wedge Neil goes Finally dork landing now pays off long dont shed parts break something off dork point wedge isnt very likely produce score since dork usually result too much approach speed tends produce cartwheels ground loops should cases put some part fuselage outside boundary radii Taking Noltes figures 25-foot 30 degrees landing zone would about 164 square feet translates over five sheets -in plywood Cutting small enough sections ease transporting assembling joints wouldnt disrupt smooth landing might cause club field director some concern its worth try Get lead February issue column described proven method permanent nose ballast made B-B shot Since scribe has used B-B shot rather simple yet effec tive way make ballast modules improved L/D better penetrating capabilities wing loadings rela tively light adding ballast center gravity used method ballasting varies modelers Most common slug lead cut fit fuse lage compartment sophisticated methods include custom fit bars various weights desired overall ballast can made up smaller modules Leadfilled brass tubes slide wings parallel close main sparswork well also However simple ballast solution acquire some small plastic bags Bags 5 inches 11/2 inches work very well added insurance against punctures take three bags put inside other Eight ounces shot produces soft lead packet approximately 3A inches rolling top bag over several times stapling fold have secure packet course packets can made up weight three four different sizes recommended allows combinations selecting over ballast weight soft packs have advantage being able absorb shock should hard landing occur pillowlike shape wont localize sudden load such bolted down lead bars overall effect much gentle treat ment sailplanes structure youre making ballast might want have wing-loading figures handy Make up chart three columns ballast weight wing loading Under ballast column put numbers ounces ballast might using varying conditions Under weight column list planes up weights respective ballast weights Next figures under wing loading list various respective figures Wing loading per square foot can easily computed dividing overall weight wing area square feet Tape chart under canopy floor ballast compartment ready reference As right combinations practice under varying wind condi tionscan determine Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Helicopters/Schoonard Continued page 21 will make rapid descents quick stops tail moving inch Some may want mount pot collective servo am sure can done very neatly very simple method has permitted great deal experimenting re moving canopy seat will notice adding mix pot tail-rotor servo will increase servo travel Because will have move tail-rotor pushrod get travel accustomed creased travel tends make tail rotor touchy mix travel will have adjusted style flying may also have recenter tail-rotor servo pot bring mix tail rotor proper relationship Next months column will deal mod tail-rotor drive eliminates gear shaft wear clutch greatly increases power head Good luck tail-rotor mix youre flying youre trying Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Smith Miniplane Tailored 35 45 engine range Sigs kit famous homebuilt flown Maxey Hester firsts RC Sport Scale 76 Canadian Nats Multiwing Championships Span 44 area 650 sq Features too numerous mention include molded ABS plastic cowling wheel pants formed cabane struts formed aileron torque rods colorful decals pre-bent landing gear wires illustrated step-by-step structions Most complete hardware package includes aluminum motor mounts molded control hinges nylon bolts tailwheel bracket etc Design Mike Gretz Price $4995Sig Manufacturing Co Montezuma IA 50171 p roduct,viewprod uctreviewp rod u otroviwprodu Otroview 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS productrevieworoductreviworoduCtrevieWprOdoCtreVieW
Edition: Model Aviation - 1977/04
Page Numbers: 21, 82
p Helicopters Wall Schoonard SINCE MY LAST column have doing lot testing tail-rotor mix Super-Baby Along efforts have help some interested parties testing has done several points view several types helicopters mix properly set up will work way idle full col lective totally linear first thing to determine value tail-rotor servo pot can asking manufacturer measuring ohm meter servo open solder wire termi nal potred black outer ones white center Run female plug take male side plug make wire ends match other plug ends should about 5 inches long Purchase potentiometer same value tail-rotor servo Preferably pot should like ones trans mitter however shaft-type pot will three remaining wires should soldered potwhite center red black outer pin three wires servo can exit through grommet servo wires coming out may have enlarge hole servo case permit grom met expand Reinstall servo hook up pushrod Note pitch arm tail-rotor pitch plate mark have set center hover should lift off next step mount mix pot helicopter frame made plate 1/16 phenolic end shaped like pot base other end about inch long /8 inch wide Using Zap Hot Stuff glue pot base phenolic bracket locate pot center 2/s inches cockpit-back board horizontal center pot lower opening side frame left side helicopter shaft pot need about long should have screwdriver slot control arm mix pot used long end Top Flite 120-degree bellcrank drilled couple extra 1/16 holes adjustment large hole arm pressed over pot shaft pot bracket clamped place drill hole through bracket other helicopter side plate tap 4-40 secure 4-40 Allen cap screw Cut small hole cockpit-back board feed male plug wires through hole should located interfere collective pushrod Set collective full low mark rod collective about back board Clean spot rod solder tin Cut piece 1/16 ID brass tubing / inch long clean out end solder crosswise horizontal collective pushrod Wrap soft copper wire resolder Set collective half stick pot arm vertical make pushrod drive pot pushrod should / 16 wire threaded coupler soldered end end should have nylon snap clevis screwed onto attached center hole pot arm other end rod should bent 90 degrees go 1/16 brass tubing point pot arm should vertical col lective half stick Now turn radio transmitter trim rudder neutral transmitter plug mix pot Observe rudder servo holding pot-control arm rotate pot shaft screwdriver bring servo neutral Now bring collective low rudder servo should go end end should bring tail-rotor pitch arm forward goes rear low collective two outer pot wires will have reversed centering process redone servo travel proper amount can varied changing pushrod location pot arm moving lower travel can Collective pitch now available owners Shark 60 No modifications required be had less travel moving higher ideal setup should follows collective lift off tail-rotor pitch rod should center pitch plate rudder control should equal right left flying tailrotor pitch should set will face wind hands off collective added tail-rotor pitch added mix pot as- collective reduced tailrotor pitch landing totally remov ing collective tail-rotor pitch should negative will have adjust throws particular machine conditions Super-Baby will sit firmly ground rotating will leap off tail coming around Continued page 82 April 1977 21 new collective pitch head converts Heli-Baby Super-Baby Perfection RC helicopters days great its difficult tell model real thing isolated against sky Bill Youmans Schlutar Gazelle 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st RC Sport Scale 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 AND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL ClassCSpeedSr&Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeedOpSrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BIADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAPITCHPRICE 5%3499 e3499 733%4tie a3%45e129 94599A 77%139 10497149 10eW eW149 106EW159 114e77% 7I7%9159 11eEW199 11%E7i99 129179 125W179 1356219 14se249 1556309 194/9399 W WIDE BLADE 9W EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO1 IN PYLON RACING LEADING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING CIA PITCH PRICE 5%3%4119 7 55/,9 129 7 SN 5AN eN 129 8% 9%9%7 7%7%199 9 9%7 747%199 CONTROL LINE SPEED & RACING DIA PITCH PRICE 4/947119 4%55119 9799%129 77% 10411139 999149 99N 9%N149 9%77%149 91213199 N NARROW ing farther out wedge trying slide farther point wedge Neil goes Finally dork landing now pays off long dont shed parts break something off dork point wedge isnt very likely produce score since dork usually result too much approach speed tends produce cartwheels ground loops should cases put some part fuselage outside boundary radii Taking Noltes figures 25-foot 30 degrees landing zone would about 164 square feet translates over five sheets -in plywood Cutting small enough sections ease transporting assembling joints wouldnt disrupt smooth landing might cause club field director some concern its worth try Get lead February issue column described proven method permanent nose ballast made B-B shot Since scribe has used B-B shot rather simple yet effec tive way make ballast modules improved L/D better penetrating capabilities wing loadings rela tively light adding ballast center gravity used method ballasting varies modelers Most common slug lead cut fit fuse lage compartment sophisticated methods include custom fit bars various weights desired overall ballast can made up smaller modules Leadfilled brass tubes slide wings parallel close main sparswork well also However simple ballast solution acquire some small plastic bags Bags 5 inches 11/2 inches work very well added insurance against punctures take three bags put inside other Eight ounces shot produces soft lead packet approximately 3A inches rolling top bag over several times stapling fold have secure packet course packets can made up weight three four different sizes recommended allows combinations selecting over ballast weight soft packs have advantage being able absorb shock should hard landing occur pillowlike shape wont localize sudden load such bolted down lead bars overall effect much gentle treat ment sailplanes structure youre making ballast might want have wing-loading figures handy Make up chart three columns ballast weight wing loading Under ballast column put numbers ounces ballast might using varying conditions Under weight column list planes up weights respective ballast weights Next figures under wing loading list various respective figures Wing loading per square foot can easily computed dividing overall weight wing area square feet Tape chart under canopy floor ballast compartment ready reference As right combinations practice under varying wind condi tionscan determine Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Helicopters/Schoonard Continued page 21 will make rapid descents quick stops tail moving inch Some may want mount pot collective servo am sure can done very neatly very simple method has permitted great deal experimenting re moving canopy seat will notice adding mix pot tail-rotor servo will increase servo travel Because will have move tail-rotor pushrod get travel accustomed creased travel tends make tail rotor touchy mix travel will have adjusted style flying may also have recenter tail-rotor servo pot bring mix tail rotor proper relationship Next months column will deal mod tail-rotor drive eliminates gear shaft wear clutch greatly increases power head Good luck tail-rotor mix youre flying youre trying Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Smith Miniplane Tailored 35 45 engine range Sigs kit famous homebuilt flown Maxey Hester firsts RC Sport Scale 76 Canadian Nats Multiwing Championships Span 44 area 650 sq Features too numerous mention include molded ABS plastic cowling wheel pants formed cabane struts formed aileron torque rods colorful decals pre-bent landing gear wires illustrated step-by-step structions Most complete hardware package includes aluminum motor mounts molded control hinges nylon bolts tailwheel bracket etc Design Mike Gretz Price $4995Sig Manufacturing Co Montezuma IA 50171 p roduct,viewprod uctreviewp rod u otroviwprodu Otroview 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS productrevieworoductreviworoduCtrevieWprOdoCtreVieW