RADIO CONTROL AEROBATICS NOW THAT YOUVE some time chew proposed FAA rules its time stir pot bit refresh memories dont have clue what Im talking about let back up FAT rules committee proposed following changes First engine displacement would unlimited Second model would have fit 2 x 2-meter box 78 x 78 inches Third box would increase 600 750 either side center pole weight noise limits would remain same originally thought entire FAT group vote FAT rule change committees proposals January have since informed wont until May after written before read still believe proposed FAT rule changes will pass have trying figure out what makes sense us regarding AMA classes meantime fliers have responding comments about proposed rule changes appeared February column received letter Salvatore Piu Beachwood New Jersey contained some interesting observations different subject mentioned February issue MA FAT model requirements changing again would like remind fellow Pattern competitors intent placing restrictions model size weight engine displacement allow competitors fly approximate equivalent flying model way difference scores should theoretically rely pilots ability benefits pitfalls particular model design benefits/pitfalls mean variations things like overall flight speed vertical performance opinion FAT now adding another set variables competition Maybe FAT level competition model itself really doesnt make difference because expertise pilots have achieve competitive FAT class hope intermediate classes Sportsman Advanced Masters upgraded same model requirements FAT pursuing anything does happen Pattern community may want consider different model requirements class fact actually have already started designating relaxed version model requirements Novice class As stands now will flying three sets model requirements FAT Novice Sportsman Advanced Masters Salvatore right However let emphasize United States have very little control over FAT rule changes have oaly vote FAT rules probably going changed no matter what think about problem have solve accommodate almost-certain changes FAA rules lousing things up everybody else country Hardiy anybody will resist box change because will make easier pilots keep models box since everyone will probably fly closer will make judging easier Its almost non-issue except clubs like have painted box lines runway will have paint unlimited-engine-displacement rule change proposal would probably cause greatest effect among AMA-class events Advanced Masters contestants because performance demands maneuver schedules adopted two-stroke engine fliers will able use 90s 1 20s maybe larger reach performance levels would exceed what four-stroke fliers have now four-stroke fliers probably wouldnt able increase engine size couple reasons First arent good fourstroke options out Second larger displacement four-stroke engines weigh higher weight could easily make models noseheavy exceed weight limit have some tough choices make As read about three months go before August 31 rule change proposal deadiine Lets get just got 1994-95 rule book noted big improvement previous finally got rid conflicting downgrades things like stall turns Now flop 1500 greater will eam zero based point per 150 error rule previous Suggested Downgrades recommended three- four-point downgrade contradicted rule regarding point per 150 error Judges already know rules dont intend read new book will need reminded rule book still error-free example picture Stall Turn still wrong does depict required lines before after stall turn absence lines will result one- two-point downgrade per infraction judges know what doing lost track copies article schematic servo tester Ive mailed people sent SASE probably around 150 am happy send out need send SASE single stamp dont need send money Reproduction costs time required fold article schematic very large consider opportunity share something value fellow RC fliers keep requests coming Maybe next month Ill show picture what looks like Some readers have asked calibrate servo tester can use known good servo oscilloscope should have knob pointer tester want calibrate tester servo put arm servo plug receiver channel Turn transmitter receiver note exactly servo arm oriented transmitter stick trim centered Now plug servo tester 48-volt battery also connected July1994 69 Mickey Walker built A-6 Intruder Classic Air Models kit David Prices two-year-old Phoenix VI Black Baron film RJL 61 Box 784 Fruitland Park FL 34731 Jeff Lee photo Webra Dynamix carbno pipe Airtronics Module 7P radio ACHIEVE MAJOR THRILL TEAR UP THE SKY WITH THE STINGER 40 NOT ARFJ Fuselage Length 35 Rec Engine Size 32 46 Flying Weight 43/4 5 lbs Wing Span 48 Wing Area 528 Sq Radio Channels 4 Channel Catalog No 94218 Designed byu Jerry SmIIh stable consistent flyer will aerobatic maneuver Made USA Send SASE Free Color Catalog LANIER RC PO Box 458 Oakwood GA 30566 Phone 404-532-6401 900 am-530 pm EST Fax 404-532-2163 Note arm servo moves return initial position knob servo tester position neutral corresponds 15-millisecond signal pulse brands radios dont like orientation knob loosen nut potentiometer rotate body until like Tighten nut Mark position pointer knob Plug servo receiver again turn transmitter receiver Notice servo arm oriented transmitter stick trim moved toward limit like full up elevator stick trim servo arm should have moved about 450 fl corresponds either 10- 20millisecond signal pulse radios important know Now plug servo back tester move knob until servo arm moves same position transmitter stick trim limit Mark position knob Plug servo receiver again turn transmitter receiver Note servo arm oriented transmitter stick trim moved toward opposite limit like full down elevator stick trim Once again servo arm should have moved about 450 opposite direction neutral position Now plug servo back tester move knob until servo arm moves same position transmitter stick trim limit Mark position knob have three positions marked servo tester neutral extremes either direction servos should operate reliably knob rotated through range servo jumps jitters otherwise acts funky have bad servo could bad servo gears motor potentiometer Get somebody knows find out before using servo model Gears relatively inexpensive can replaced fairly easily motor potentiometer replacement can costly buying new servo mentioned can calibrate servo tester oscilloscope plug output servo tester oscilloscope using negative black lead signal probably orange yellow lead can move knob servo tester until oscilloscope indicates 10- 15- 20millisecond pulse widths Mark ail three positions Keep SASEs coming odel Aviation Dizons Stinger could RC Scale Aerobatics columns Stinger equipped smoke airshows Florida Ray White relaxes recent 93 Senior Pattern Association contest Note towing handle Rays field box
Edition: Model Aviation - 1994/07
Page Numbers: 69, 70
RADIO CONTROL AEROBATICS NOW THAT YOUVE some time chew proposed FAA rules its time stir pot bit refresh memories dont have clue what Im talking about let back up FAT rules committee proposed following changes First engine displacement would unlimited Second model would have fit 2 x 2-meter box 78 x 78 inches Third box would increase 600 750 either side center pole weight noise limits would remain same originally thought entire FAT group vote FAT rule change committees proposals January have since informed wont until May after written before read still believe proposed FAT rule changes will pass have trying figure out what makes sense us regarding AMA classes meantime fliers have responding comments about proposed rule changes appeared February column received letter Salvatore Piu Beachwood New Jersey contained some interesting observations different subject mentioned February issue MA FAT model requirements changing again would like remind fellow Pattern competitors intent placing restrictions model size weight engine displacement allow competitors fly approximate equivalent flying model way difference scores should theoretically rely pilots ability benefits pitfalls particular model design benefits/pitfalls mean variations things like overall flight speed vertical performance opinion FAT now adding another set variables competition Maybe FAT level competition model itself really doesnt make difference because expertise pilots have achieve competitive FAT class hope intermediate classes Sportsman Advanced Masters upgraded same model requirements FAT pursuing anything does happen Pattern community may want consider different model requirements class fact actually have already started designating relaxed version model requirements Novice class As stands now will flying three sets model requirements FAT Novice Sportsman Advanced Masters Salvatore right However let emphasize United States have very little control over FAT rule changes have oaly vote FAT rules probably going changed no matter what think about problem have solve accommodate almost-certain changes FAA rules lousing things up everybody else country Hardiy anybody will resist box change because will make easier pilots keep models box since everyone will probably fly closer will make judging easier Its almost non-issue except clubs like have painted box lines runway will have paint unlimited-engine-displacement rule change proposal would probably cause greatest effect among AMA-class events Advanced Masters contestants because performance demands maneuver schedules adopted two-stroke engine fliers will able use 90s 1 20s maybe larger reach performance levels would exceed what four-stroke fliers have now four-stroke fliers probably wouldnt able increase engine size couple reasons First arent good fourstroke options out Second larger displacement four-stroke engines weigh higher weight could easily make models noseheavy exceed weight limit have some tough choices make As read about three months go before August 31 rule change proposal deadiine Lets get just got 1994-95 rule book noted big improvement previous finally got rid conflicting downgrades things like stall turns Now flop 1500 greater will eam zero based point per 150 error rule previous Suggested Downgrades recommended three- four-point downgrade contradicted rule regarding point per 150 error Judges already know rules dont intend read new book will need reminded rule book still error-free example picture Stall Turn still wrong does depict required lines before after stall turn absence lines will result one- two-point downgrade per infraction judges know what doing lost track copies article schematic servo tester Ive mailed people sent SASE probably around 150 am happy send out need send SASE single stamp dont need send money Reproduction costs time required fold article schematic very large consider opportunity share something value fellow RC fliers keep requests coming Maybe next month Ill show picture what looks like Some readers have asked calibrate servo tester can use known good servo oscilloscope should have knob pointer tester want calibrate tester servo put arm servo plug receiver channel Turn transmitter receiver note exactly servo arm oriented transmitter stick trim centered Now plug servo tester 48-volt battery also connected July1994 69 Mickey Walker built A-6 Intruder Classic Air Models kit David Prices two-year-old Phoenix VI Black Baron film RJL 61 Box 784 Fruitland Park FL 34731 Jeff Lee photo Webra Dynamix carbno pipe Airtronics Module 7P radio ACHIEVE MAJOR THRILL TEAR UP THE SKY WITH THE STINGER 40 NOT ARFJ Fuselage Length 35 Rec Engine Size 32 46 Flying Weight 43/4 5 lbs Wing Span 48 Wing Area 528 Sq Radio Channels 4 Channel Catalog No 94218 Designed byu Jerry SmIIh stable consistent flyer will aerobatic maneuver Made USA Send SASE Free Color Catalog LANIER RC PO Box 458 Oakwood GA 30566 Phone 404-532-6401 900 am-530 pm EST Fax 404-532-2163 Note arm servo moves return initial position knob servo tester position neutral corresponds 15-millisecond signal pulse brands radios dont like orientation knob loosen nut potentiometer rotate body until like Tighten nut Mark position pointer knob Plug servo receiver again turn transmitter receiver Notice servo arm oriented transmitter stick trim moved toward limit like full up elevator stick trim servo arm should have moved about 450 fl corresponds either 10- 20millisecond signal pulse radios important know Now plug servo back tester move knob until servo arm moves same position transmitter stick trim limit Mark position knob Plug servo receiver again turn transmitter receiver Note servo arm oriented transmitter stick trim moved toward opposite limit like full down elevator stick trim Once again servo arm should have moved about 450 opposite direction neutral position Now plug servo back tester move knob until servo arm moves same position transmitter stick trim limit Mark position knob have three positions marked servo tester neutral extremes either direction servos should operate reliably knob rotated through range servo jumps jitters otherwise acts funky have bad servo could bad servo gears motor potentiometer Get somebody knows find out before using servo model Gears relatively inexpensive can replaced fairly easily motor potentiometer replacement can costly buying new servo mentioned can calibrate servo tester oscilloscope plug output servo tester oscilloscope using negative black lead signal probably orange yellow lead can move knob servo tester until oscilloscope indicates 10- 15- 20millisecond pulse widths Mark ail three positions Keep SASEs coming odel Aviation Dizons Stinger could RC Scale Aerobatics columns Stinger equipped smoke airshows Florida Ray White relaxes recent 93 Senior Pattern Association contest Note towing handle Rays field box