RADIO CONTROL HELICOPTERS MORE ON BLADE BALANCING Several columns ago discussed blade balancing need match blades toy two following blade spanwise center gravity CG total weight overall balance obtaln useful palr statically balanced blades Note match two blade characteristics automatically have matched third also discussed use Koll Rotor Pro balancer designed Laurel Koll manufactured sold Miniature Aircraft 3743 Silver Star Rd Orlando FL 32808 first commercially available product accurately balance match apparent CGs rotor blades means can get set balanced blades just using Rotor Pro balancer However another way solve balance problem substitute benefits accurate gram scale overall balance Although triple-beam balance scales have market several years have widely used because cost delicate nature time required get accurate results really needed obtain workshop accuracy like use write about normal tools us have workshop Combined useful techniques tools will give us adequate results keep helicopters well balanced air article will deviate theoiy operation describe use advantages new Acculab digital gram scale available Champion Model Products 880 Carmen Court LaVerne CA 91750 use Model 600 accurate Ito gram runs internal 9-volt battery external AC adapter very easy use requires 3-5 seconds obtain accurate weight readout stores easily its styrofoam box Although Acculab offers other digital scales varying maximum weights accuracies Model 600 has enabled develop technique balance rotor blades minutes accuracy have able get before Heres goes Although technique can used building set weighted blades its easier describe assuming starting set finished blades would like bring final balance weigh blade Acculab digital gram scale determine overall weight measured 1/10 gram may some blades right off few tenths gram cut piece blade-covering material lay light blade sticky side up does stick blade bring blades same weight will take few weighings get covering material just right size doesnt take long Acculab take original heavy blade use master blade find apparent CG Koll Rotor Pro Balancer say apparent completely accurate because true CU its affected arm holding blade position balancer lighter blade placed balancer bladecovering material placed blade position match apparent CUs Now have set blades accurately matched spanwise CU overall weight believed method accurate balanced several sets fiberglass carbon blades according technique blades advertised factory-matched balanced just bolt fly However proved slightly off weight spanwise CU Only set blades perfectly matched weight still required one-inch square blade-covering material blade about four inches apart match spanwise CGs Thats accurate technique also use Acculab balance tall rotor TR bladesor least make sure overall weight same Since almost tail rotor blades molded some form composite material densities weight distribution pretty well consistent could off slightly weight whatever reason weigh TR blade Acculab add little epoxy light blade match weights like epoxy better other materials because doesnt change weight cures can spread easily finger over wide area too much applied can easily removed uncured state edge playing card During past several years have come long way refining February 1995 117 Hitec Rubber Duck can replace standard long antennas no decrease performance Blade covers Wife Used together Rotor Pro Balancer Acculab digital gram scale produce finest statically balanced blades Acculab accurately weighs rotor blades within 1/10 gram less five seconds Large digital readout balance rotor blades improve performance longevity go What really need dynamic balancerlike ones used balance wheels cars Although could external device would mount blades overall head also others working balance adjuster would mount main- tail-rotor shaft device would sense out-of-balance condition rotors use would automatically distribute weight needed bring system dynamic balance Im sure long will until such device commercially available hope will designed such way indicates blade needs additional weight rather being permanent weighty part rotor system New Heli Items Hitec RCD Inc 10729 Wheatlands Ave Suite C Santee CA 92071 selling Rubber Duck antenna transmitters What makes antenna unique feels like coiled piece wire wrapped black rubber housing can bent complete circle damage Although will have check Hitec see will fit particular transmitter easily replaces stock antenna Airtronics Infinity 660 transmitter leaving less 10 inches antenna exposed no noticeable change effective transmitter range No bent broken antennas adds overall balance transmitter Performance Specialties Box 3146 Gardnerville NV 89410 modifies existing engine increase its power overall performance reducing vibration sent crash-damaged OS 6lFSN went through completely brought back better-than-new life Its hard compare power performance modified engines others am using since dont have necessary measuring equipment required knowledge make measurements good engine have Id like have complete article engines what accomplished companies such Performance Specialties improve engine performance can knowledgeable about care feeding very important expensive part helicopters Blade Covers Wife 555 Garden Heights Dr Winter Garden FL 34787 Tel [407] 656-0083 manufactures quilted blade covers protect main rotor blades hangar rash during transportation storage covers 60-size rotor blades made white quilted cotton yellow trim have tie string around middle keep pair blades together well protected Other colors sizes available Im sure Jean Hiatt will happy hear have special request Model Aviation 4U have new modeling product service Submit inclusion Modelers Mall Send brief description product/services features along photo sample Model Aviation ATTN Modelers Mall 5151 East Memorial Dr Muncie IN 47302 Submissions printed spaceavailable basis
Edition: Model Aviation - 1995/02
Page Numbers: 117, 118
RADIO CONTROL HELICOPTERS MORE ON BLADE BALANCING Several columns ago discussed blade balancing need match blades toy two following blade spanwise center gravity CG total weight overall balance obtaln useful palr statically balanced blades Note match two blade characteristics automatically have matched third also discussed use Koll Rotor Pro balancer designed Laurel Koll manufactured sold Miniature Aircraft 3743 Silver Star Rd Orlando FL 32808 first commercially available product accurately balance match apparent CGs rotor blades means can get set balanced blades just using Rotor Pro balancer However another way solve balance problem substitute benefits accurate gram scale overall balance Although triple-beam balance scales have market several years have widely used because cost delicate nature time required get accurate results really needed obtain workshop accuracy like use write about normal tools us have workshop Combined useful techniques tools will give us adequate results keep helicopters well balanced air article will deviate theoiy operation describe use advantages new Acculab digital gram scale available Champion Model Products 880 Carmen Court LaVerne CA 91750 use Model 600 accurate Ito gram runs internal 9-volt battery external AC adapter very easy use requires 3-5 seconds obtain accurate weight readout stores easily its styrofoam box Although Acculab offers other digital scales varying maximum weights accuracies Model 600 has enabled develop technique balance rotor blades minutes accuracy have able get before Heres goes Although technique can used building set weighted blades its easier describe assuming starting set finished blades would like bring final balance weigh blade Acculab digital gram scale determine overall weight measured 1/10 gram may some blades right off few tenths gram cut piece blade-covering material lay light blade sticky side up does stick blade bring blades same weight will take few weighings get covering material just right size doesnt take long Acculab take original heavy blade use master blade find apparent CG Koll Rotor Pro Balancer say apparent completely accurate because true CU its affected arm holding blade position balancer lighter blade placed balancer bladecovering material placed blade position match apparent CUs Now have set blades accurately matched spanwise CU overall weight believed method accurate balanced several sets fiberglass carbon blades according technique blades advertised factory-matched balanced just bolt fly However proved slightly off weight spanwise CU Only set blades perfectly matched weight still required one-inch square blade-covering material blade about four inches apart match spanwise CGs Thats accurate technique also use Acculab balance tall rotor TR bladesor least make sure overall weight same Since almost tail rotor blades molded some form composite material densities weight distribution pretty well consistent could off slightly weight whatever reason weigh TR blade Acculab add little epoxy light blade match weights like epoxy better other materials because doesnt change weight cures can spread easily finger over wide area too much applied can easily removed uncured state edge playing card During past several years have come long way refining February 1995 117 Hitec Rubber Duck can replace standard long antennas no decrease performance Blade covers Wife Used together Rotor Pro Balancer Acculab digital gram scale produce finest statically balanced blades Acculab accurately weighs rotor blades within 1/10 gram less five seconds Large digital readout balance rotor blades improve performance longevity go What really need dynamic balancerlike ones used balance wheels cars Although could external device would mount blades overall head also others working balance adjuster would mount main- tail-rotor shaft device would sense out-of-balance condition rotors use would automatically distribute weight needed bring system dynamic balance Im sure long will until such device commercially available hope will designed such way indicates blade needs additional weight rather being permanent weighty part rotor system New Heli Items Hitec RCD Inc 10729 Wheatlands Ave Suite C Santee CA 92071 selling Rubber Duck antenna transmitters What makes antenna unique feels like coiled piece wire wrapped black rubber housing can bent complete circle damage Although will have check Hitec see will fit particular transmitter easily replaces stock antenna Airtronics Infinity 660 transmitter leaving less 10 inches antenna exposed no noticeable change effective transmitter range No bent broken antennas adds overall balance transmitter Performance Specialties Box 3146 Gardnerville NV 89410 modifies existing engine increase its power overall performance reducing vibration sent crash-damaged OS 6lFSN went through completely brought back better-than-new life Its hard compare power performance modified engines others am using since dont have necessary measuring equipment required knowledge make measurements good engine have Id like have complete article engines what accomplished companies such Performance Specialties improve engine performance can knowledgeable about care feeding very important expensive part helicopters Blade Covers Wife 555 Garden Heights Dr Winter Garden FL 34787 Tel [407] 656-0083 manufactures quilted blade covers protect main rotor blades hangar rash during transportation storage covers 60-size rotor blades made white quilted cotton yellow trim have tie string around middle keep pair blades together well protected Other colors sizes available Im sure Jean Hiatt will happy hear have special request Model Aviation 4U have new modeling product service Submit inclusion Modelers Mall Send brief description product/services features along photo sample Model Aviation ATTN Modelers Mall 5151 East Memorial Dr Muncie IN 47302 Submissions printed spaceavailable basis