RADIO CONTROL HELICOPTERS Editors note September issue reference made JR s new Credit Card Receivers correct model number 236 736 course company name JR Radios Apologies errors THE LAST COUPLE issues have talking about collective pitchhow get straight-line curve September issue use pitch gauge October issue round out series collective pitch some techniques getting initial pitch setup helicopter some mistakes see others make first question ask myself what type flying intend particular helicopter Im setting up helicopter novice would like greatly reduced pitch range something order 00 60This will desensitize collective control help keep descents being too violent also reduce climbing capability can hover six inches can also hover six feetbut six-inch level much safer would also pitch curve needed until flying skills mastered advance forward flight Flying Scale helicopter presents need both greater pitch window pitch curve case pitch curves would need established normal flying limited aeronautics autorotation landings moving advanced flying individual pitch curves will needed normal flight several types acrobatics autos switchiess inverted flying since last example requires planning lets look initial pitch curves can set up What extreme maximum minimum pitch requirements planned maneuvers easily shown following list Normal flight Aerobatics Autorotations Switchless inverted 30 100 50 100 50 140 l00 100 140 autorotations means need window 240 l0o 140 next step put pitch gauge helicopter see 240 window available make measurement disconnect collective-pitch pushrod move pitchchange mechanism hy hand determine max extremes possible available pitch window large enough either collective pitch helicopter must modified some pitch requirements must changed match helicopters capabilities Lets assume helicopter capable needed 240 window next step mechanically setup servo arm linkage give 240 using full servo throw done trial errormoving collective pitch rod out servo arm full window obtained minimum maximum collective stick positions Notice done before think pitch curves individual maneuvers can think overall pitch curve individual pitch curves will developed Now can think about setting individual pitch curves corresponding list requirements will described using Futaba Super Seven computer radio since lesser radios have multipitch curve capabilities Place helicopter flat level surface mount pitch gauge rotorhlade Position helicopter looking side view main shaft straight up down swashplate flybar level parallel other get normal flight pitch curve set pitch gauge 30 collective stick full low position reduce end point radio until desired 30 obtained set pitch gauge 100 collective stick its maximum position adjust high end point What have done reduce mechanical limits radio give us pitch window need normal flying next step depends what radio working hica adjust pitch curve end points blend overall curve Some radios automatically adjust intermediate pitch points obtain desired smoothness others Check yours sure needed use formula presented September column get intermediate points other pitch curves can adjusted similar manner going appropriate pitch curve radio turning transmitter switch function adjusting high low end points desired pitch readings according chart real problem could run midpoints may same pitch fairly close may want try way chances changes will noticeable flight midpoints can adjusted slightly radio same now throws above below midpoint will same choice depends particular flying style techniques Remember initial pitch settings approximations real test fly helicopter make whatever pitch adjustments necessary satisfactory performance just little experimenting can drastically improve performance feel helicopter remember put pitch gauge back helicopter record pitch data use after maintenance repairs another similar helicopter Airtronics 11 Autry Irvine CA 92718 has recently released its new Infinity 660 Series radio Ill give full report its features performance future column However first impressions new entry computer radio field well-thought-out radio system us heli fliers also fixed-wing sailplane fliers Some features hrtmediately impressed overall design transmitter switches transmitter made black plastic compound molded easily gripped has comfortable feel compared thick total extremes pitch requirements would 100 switchless inverted flying November 1993 75 X-Cell 60 Styrofoam floats wet Texas fun-fly Pitch changes Mid-West Helicopter Association flying field between Fort Worth Dallas flat needed compensate floats and wide open 4- LDM Industries Inc THE STRONGBOX II RECEIVER AND BATTERY PACK PROTECTION SYSTEM STRONGBOX F larger veision popular STRONGBO has specificafly designed meet needs giant scale flyers SIRONGBOr STRONGBOX ir both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray included hardware SIRONGBO 24 deep 27 wide 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fitin 40 larger size models STRONGBOX F 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit 120 larger size models receiver battery peck valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Protect valuable STRONGBOXPart #8100 STRONGBOXW $1195 U wiww WithLDM Industries Ball BearingServo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost ball bearing servo can upgrade 4 standard servos following three conversion 1db fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus CS28 C5128 C5238 & C5248 servos Kit #96004 pack ..$2995 KIt #96101 pack ..$795 Airtronics 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..5795 JR 501 & 507 Focus HS300 RCD 05 Tower TS-51 Hobbico CS-Si Ace 330 servos Kit #9800 4 pack 42095 Kit #98101 pack..$595 cEliminate wobble output shaft Reduce control response deadhand oReduce chance flutter clmprove control surface centering AIlow use puli-puil cables NO-HA Tiuii SOLVENTro ceder send check money onler including $300 S&H Talc. Haggle Out Mosokate Trim WorldLDM Industries Inc Bonds Monokote over Monokote heatPO Box 292396 Dept 140 Elinilnates ugly bubbles wrinicies Tampa FL 33687-2396 Completely fuel-proof easy ton. Phone/Fax 813 985-5616 Will cause colois bleedFlorida residents add 61/2% sales tax Allows tIme position trim piecesVISA MASTER CARD Accepted Also works Uitracote Oracover ler Inquiries Welcome Part #95004 oz Bottle$69501993 LOM Industries inc boxy transmitters hard hold Some standard toggle switches have replaced rocker switches again molded finger easy activation what really great switches assignable Now can place idle up throttle hold etc exactly want control direction switch activate function certainly electronic powerhouse Airtronics can described few short paragraphs after flying awhile Ill give whole column its performance Hitec RIC 10729 Wheatlands Ave Suite C Santee CA 92071 has released its HS-605BB Ultra Torque Servo am installing separate helicopter testing servo will work popular radio has specs almost too good true standard 48-volt airborne pack claims output 77 inch-ounces torque speed 016 seconds better numbers six-volt pack also incorporates dual ball bearings servo know uses helical gears helical gears useful managing power also improving precision centering overall servo Together well-known RCD receivers servos should make excellent flight pack new radios allow several models flown radio lectricslKopski Continued page 74 have several chargers installed operational minivan SRSCC rather versatile unit offering operational features including some dont often get use because its installed dedicated motor packs SRSCC also equipped charge receiver transmitter packs accurately discharge packs has adjustable rates LCD readout always knows operating conditions times capacities etc fact has operational features Ijust cant fit em inthe space remaining Ive seen several feature articles SCC As motor-battery peak charger unit very easy use functions very well youre considering top-end charger sure include microprocessor-controlled product among youre reviewing Quite coincidentally happened meet Larry Sribnick SR LVRCS meet took opportunity tell Larry exactly what thought charger think Larry set back bit enthusiasm normally Im bit stickler electronic performance Larry chose alternative words describe same thought Anyway Larry briefly described forthcoming update charger software will expand its operational limits add features optional upgrade relatively small cost current users will notified its availability As understand future SRSCC will available expansion feature same price Thats nice thing about computercontrolled products chip upgrade allows product feature advancement obsolescence Ive seen other modeling products including ACE MicroPro 8000 transmitter BEP MicroPeaker recently installed MicroPeaker-equipped Astro 112 van Ill accumulating experience product upcoming months Incidentally Larry shared quip some fellow club members watched pack never peaks Yes does just seems like will never get Thus ends yet column time see 93 KRC Electric Fly will history Nats issue December will next out next column will January 94 MA right now its June 20 Please forward SASE correspondence youd like reply Happy Quiet Power Landings Everyone odel Aviation ernal Cut-anuy STRONGBOXM IW13133115 servo sonversion Kus wiTh
Edition: Model Aviation - 1993/11
Page Numbers: 75, 76
RADIO CONTROL HELICOPTERS Editors note September issue reference made JR s new Credit Card Receivers correct model number 236 736 course company name JR Radios Apologies errors THE LAST COUPLE issues have talking about collective pitchhow get straight-line curve September issue use pitch gauge October issue round out series collective pitch some techniques getting initial pitch setup helicopter some mistakes see others make first question ask myself what type flying intend particular helicopter Im setting up helicopter novice would like greatly reduced pitch range something order 00 60This will desensitize collective control help keep descents being too violent also reduce climbing capability can hover six inches can also hover six feetbut six-inch level much safer would also pitch curve needed until flying skills mastered advance forward flight Flying Scale helicopter presents need both greater pitch window pitch curve case pitch curves would need established normal flying limited aeronautics autorotation landings moving advanced flying individual pitch curves will needed normal flight several types acrobatics autos switchiess inverted flying since last example requires planning lets look initial pitch curves can set up What extreme maximum minimum pitch requirements planned maneuvers easily shown following list Normal flight Aerobatics Autorotations Switchless inverted 30 100 50 100 50 140 l00 100 140 autorotations means need window 240 l0o 140 next step put pitch gauge helicopter see 240 window available make measurement disconnect collective-pitch pushrod move pitchchange mechanism hy hand determine max extremes possible available pitch window large enough either collective pitch helicopter must modified some pitch requirements must changed match helicopters capabilities Lets assume helicopter capable needed 240 window next step mechanically setup servo arm linkage give 240 using full servo throw done trial errormoving collective pitch rod out servo arm full window obtained minimum maximum collective stick positions Notice done before think pitch curves individual maneuvers can think overall pitch curve individual pitch curves will developed Now can think about setting individual pitch curves corresponding list requirements will described using Futaba Super Seven computer radio since lesser radios have multipitch curve capabilities Place helicopter flat level surface mount pitch gauge rotorhlade Position helicopter looking side view main shaft straight up down swashplate flybar level parallel other get normal flight pitch curve set pitch gauge 30 collective stick full low position reduce end point radio until desired 30 obtained set pitch gauge 100 collective stick its maximum position adjust high end point What have done reduce mechanical limits radio give us pitch window need normal flying next step depends what radio working hica adjust pitch curve end points blend overall curve Some radios automatically adjust intermediate pitch points obtain desired smoothness others Check yours sure needed use formula presented September column get intermediate points other pitch curves can adjusted similar manner going appropriate pitch curve radio turning transmitter switch function adjusting high low end points desired pitch readings according chart real problem could run midpoints may same pitch fairly close may want try way chances changes will noticeable flight midpoints can adjusted slightly radio same now throws above below midpoint will same choice depends particular flying style techniques Remember initial pitch settings approximations real test fly helicopter make whatever pitch adjustments necessary satisfactory performance just little experimenting can drastically improve performance feel helicopter remember put pitch gauge back helicopter record pitch data use after maintenance repairs another similar helicopter Airtronics 11 Autry Irvine CA 92718 has recently released its new Infinity 660 Series radio Ill give full report its features performance future column However first impressions new entry computer radio field well-thought-out radio system us heli fliers also fixed-wing sailplane fliers Some features hrtmediately impressed overall design transmitter switches transmitter made black plastic compound molded easily gripped has comfortable feel compared thick total extremes pitch requirements would 100 switchless inverted flying November 1993 75 X-Cell 60 Styrofoam floats wet Texas fun-fly Pitch changes Mid-West Helicopter Association flying field between Fort Worth Dallas flat needed compensate floats and wide open 4- LDM Industries Inc THE STRONGBOX II RECEIVER AND BATTERY PACK PROTECTION SYSTEM STRONGBOX F larger veision popular STRONGBO has specificafly designed meet needs giant scale flyers SIRONGBOr STRONGBOX ir both molded tough polypropylene plastic lined withavibration absorbing foam designed mount model like servo tray included hardware SIRONGBO 24 deep 27 wide 41 long weighs 19 ounces will hold receiver 50 800 mA flat battery pack will fitin 40 larger size models STRONGBOX F 35 deep 33 wide 61 long weighs 4 ounces will hold receiver 1200 2000 mA flat battery pack will fit 120 larger size models receiver battery peck valuable part R/C control system Give vibration crash protection need deservePart #8000 STRONGBOX $795 Protect valuable STRONGBOXPart #8100 STRONGBOXW $1195 U wiww WithLDM Industries Ball BearingServo ConversionKits can upgrade standard servos ball bearing servos just minutes less cost ball bearing servo can upgrade 4 standard servos following three conversion 1db fit 18 different servos Futaba S28 S38 S48 S128 S138 S148 Cirrus CS28 C5128 C5238 & C5248 servos Kit #96004 pack ..$2995 KIt #96101 pack ..$795 Airtronics 94102 servos Kit #97004 pack ..$2995 Kit #97101 pack..5795 JR 501 & 507 Focus HS300 RCD 05 Tower TS-51 Hobbico CS-Si Ace 330 servos Kit #9800 4 pack 42095 Kit #98101 pack..$595 cEliminate wobble output shaft Reduce control response deadhand oReduce chance flutter clmprove control surface centering AIlow use puli-puil cables NO-HA Tiuii SOLVENTro ceder send check money onler including $300 S&H Talc. Haggle Out Mosokate Trim WorldLDM Industries Inc Bonds Monokote over Monokote heatPO Box 292396 Dept 140 Elinilnates ugly bubbles wrinicies Tampa FL 33687-2396 Completely fuel-proof easy ton. Phone/Fax 813 985-5616 Will cause colois bleedFlorida residents add 61/2% sales tax Allows tIme position trim piecesVISA MASTER CARD Accepted Also works Uitracote Oracover ler Inquiries Welcome Part #95004 oz Bottle$69501993 LOM Industries inc boxy transmitters hard hold Some standard toggle switches have replaced rocker switches again molded finger easy activation what really great switches assignable Now can place idle up throttle hold etc exactly want control direction switch activate function certainly electronic powerhouse Airtronics can described few short paragraphs after flying awhile Ill give whole column its performance Hitec RIC 10729 Wheatlands Ave Suite C Santee CA 92071 has released its HS-605BB Ultra Torque Servo am installing separate helicopter testing servo will work popular radio has specs almost too good true standard 48-volt airborne pack claims output 77 inch-ounces torque speed 016 seconds better numbers six-volt pack also incorporates dual ball bearings servo know uses helical gears helical gears useful managing power also improving precision centering overall servo Together well-known RCD receivers servos should make excellent flight pack new radios allow several models flown radio lectricslKopski Continued page 74 have several chargers installed operational minivan SRSCC rather versatile unit offering operational features including some dont often get use because its installed dedicated motor packs SRSCC also equipped charge receiver transmitter packs accurately discharge packs has adjustable rates LCD readout always knows operating conditions times capacities etc fact has operational features Ijust cant fit em inthe space remaining Ive seen several feature articles SCC As motor-battery peak charger unit very easy use functions very well youre considering top-end charger sure include microprocessor-controlled product among youre reviewing Quite coincidentally happened meet Larry Sribnick SR LVRCS meet took opportunity tell Larry exactly what thought charger think Larry set back bit enthusiasm normally Im bit stickler electronic performance Larry chose alternative words describe same thought Anyway Larry briefly described forthcoming update charger software will expand its operational limits add features optional upgrade relatively small cost current users will notified its availability As understand future SRSCC will available expansion feature same price Thats nice thing about computercontrolled products chip upgrade allows product feature advancement obsolescence Ive seen other modeling products including ACE MicroPro 8000 transmitter BEP MicroPeaker recently installed MicroPeaker-equipped Astro 112 van Ill accumulating experience product upcoming months Incidentally Larry shared quip some fellow club members watched pack never peaks Yes does just seems like will never get Thus ends yet column time see 93 KRC Electric Fly will history Nats issue December will next out next column will January 94 MA right now its June 20 Please forward SASE correspondence youd like reply Happy Quiet Power Landings Everyone odel Aviation ernal Cut-anuy STRONGBOXM IW13133115 servo sonversion Kus wiTh