___John Preston___________________________ Safety Comes Fi RESPONSE Reader Questionnaire March 1986 issue 1 included questionnaire might improve safety RC flight operations suggestions made Dave Abbe California modeler letter wrote Bill Northrop publisher Model Builder magazine Bill published Daves letter Workbench column November 1985 issue MB Compared other solici tations readers response questions Ive previous columns has outstanding number letters As write February 28 1986 still trickling Since wrote March column Ive received both letter telephone call Dave Abbe has asked correct im pression may have received reading March column made seem letter being critical AMA opening paragraph stated Dave cited number reasons criticism aimed RC equipment manufacturers news media national organization words coined both Daves letter statement Bill Nor throp set record straight Dave wants known pro rather anti AMA point trying get across let ter MB safety flying field concern since AMA organiza tion seems logical effort improve RC flight safety should spearheaded AMA happen agree After get column mail intend sit down draft letter AMA Safe ty Committee summarizing results questionnaire soliciting views selection Daves suggestions respond ents clearly favored later column Meanwhile back results questionnaire Thirty-seven readers responded ques tionnaire respondent provided answer questions So add up yeas nays question will see cases total number votes cast fewer 37 respondents provided comments support answers Ill pass some first summary yes/no responses questions Analysis reader response questionnaire March 86 issue RC industry should read too 1 More uniform informative operating instructions 25-Yes 5-No 2 Should manufacturers standardize following components interchange ability 2a Servos 24Yes 7No 2b Batteries 24Yes 7No 2c Switch Harness 24Yes 7No 2d RC format 22Yes 7No 2e Other response discussed later 3 Should require mandatory battery checks before flight club flying fields 8Yes 24No 4 Should require mandatory checks of following before flight AMA-sanc tioned contests 4a Radio range 17Yes 6No 4b Tx & Rx batteries 16Yes 6No 4c Control surface flutter check 20Yes 7No 4d Should models over some specified weight state weight have battery redundancy fail-safe throttle Battery Redundancy 11Yes 5No Fail-safe throttle 7Yes 17No 5 Should AMA-chartered clubs specify pilot locations club flying field 13Yes 6No 6 Any other suggestions improve RC flying safety See discussion later Before discussing comments submitted some respondents let thank Fred Van Keuren Greenville MS Fred took initia tive poll 15 club members some thing thought wrote March safety column would have suggested Question No 1 hope some RC equipment manufacturers read column notice respondents 51 favor informa tive instructions comments some respondents provided seems may significant variation brand brand quality completeness operating instructions example reader voted no No 1 stated last radio Kraft accompanied very complete instructions Having owned recent Continued page 16 14 Model Aviation AMA Policy Statement results poll very teresting helpful However because very small number responses 37 out total approximately 80000 AMA members active some aspect RC flying Academy would need greater input act question naire-item reponses points addressed questionnaire tabulated results reply will however carefully considered along other factors appropriate AMA officers boards committees see further pursuit questions warranted C 1 p WE SAFETY CcMMlflE HAVE POUNr ThE FEREC AIRPLANE MATCH YOUR FLYING ABILITY 1 H/D500 Heavy Duty Metered Van Charger Heavy Duty version popular Metered Va Charger capable producing up 500 ma mllliampers current up 144 volts output variable stays constant throught charge period monitored accurately ter means can charge single 11 ma cell upto 12 SOOOma celIsI Perfect large D cell ni-cds 0 large glow plug batteries 12V starter batteries gall cells sealed lead acid bat teries wet cells etc Dependable solid state circuitry housed vinyl clad aluminum case years reliable service 34K60-ACE H/D 500 Charger kit 34K60C-ACE H/D 500 Charger asbld$3495 ORDERING INFO ACE products available dealer ho*ever need order direct send full amo unt plus $200 shipping han dung along catalog num j$ 116W 19 St PO Box 511MA Hlgginavllle MO 64037 call 816 584-7121 Complete catalog $200 I11tO little device sounds steady beep guide right plane Easily mounts smallest planes Use connector plug receiver same servo Also tells someone frequency solid state crystal oscillator Comes ready mount full structions included WT 1 oz DIM 1 x2 3/8 x IN USA CLUB DISCOUNTS AVAILABLE * ASK * SEND CHECK OR MONEY ORDER TO ELECTRONIC DESIGNS INC BOX Z 1925 GREENWOOD LK TPK HEWITT NEW JERSEY 07421 PHONE 201 728-1616 Plus $200 Shipping cont USA NJ Residents add 6% Sales Tax COD add $200 Allow 2 wks Shipping model Kraft radio myself would agree However another respondent voted Heck Yes said quite vividly remembered being beginner hobby haying kinds trouble learning about first radio engine plane radio major problem dont believe Dave Abbes suggestion better instructions aimed modeling products other radios However several respondents voiced displeas ure instructions accompanied engines remember engine pur chased several years ago accom panied operating instructions thing box besides engine itself sheet warnings told what what might happen ignored necessary item no help figuring out best prop what recom mended fuel etc Some respondents also stated some model kits have poor instructions reader John Hough Platte City MO included letter Construction Guide accompanied ARE kit Although guide does say model intended trainer certainly has appearance typical trainer may well appeal beginner construction guide consisted three pages two contained total four drawings showing exploded views portions model few captions last page illustrated suggested control surface throw aileron elevator rudder together picture transmitter showing stick should operate control surfaces Unfortunately illustrations Mode setup rarely used US RC fliers Johns com ment drawings sorely missing real instructions agree construc tion guide contained absolutely nothing con cerning radio installation opinion based reader response question No 1 room improve ment instructions accompanying some radios some engines kits Manu facturers take note Question No 2 As anticipated majority respondents over 31 favor stand ardizing components RC equipment assure interchangeability Several stated standardization related safety thought myself wrote March column However others pointed out lot modelers cannot make decent soldered connection situation could compromise safety flying have changed connectors say servos guess have mixed emotions standard izing components feel would bene ficial average modeler able use brand servo specific receiver having go through chore changing connecting plugs However said March column manufacturers may have sound technical reasons wanting standardize equipment Since respondents identified themselves manufac turers have no way knowing industry people feel about issue reason having unique connectors pointed out recent letter Dave Abbe incompatibility due different pulse polarity operating voltage other hand pulse polarity battery voltage could also standardizedI think Im Continued page 132 16 Model Aviation E II/D500 99 ONLY LEADER IN COMPETITION PROPELLERS NEW THP DESIGN /DIAPRICE 13 J12299 379 14479 15689 16989 NEW PITCH fliP 66 77 8 6778 677 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 6334568169 6I4566/7199 94566/77199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678989 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 54N279 8I 6778299 SERIES 400C 866777289 97289 Safety Preston Continued page 16 electronics expert comments would welcome readers knowledgeable subject Question No 3 Again anticipated respondents would opposed mandating battery checks club field walks life have found people generally op posed mandatory rules regulations Mandatory use automobile seat belts good example Typical comments sub mitted negative voters would nearly impossible enforce would policeman AMA clubs fly ing site anonymous response written notepaper Thai Hut Restaurant Wheaton MD stated No absolutely No Rules respondent submitted comment Question No 6 Any other sugges tions stated rules need rather much knowledge ex perienced RCers can pass newcomers hobby will determine safe operations March column stated belief mandatory battery checks club fields might difficultor impossible enforce other hand think Thai Hut Restau rants suggestion experience ex perts needs conveyed beginners en sure safety good larger RC clubs have formal semi-formal flighttraining programs new members beginners RC hobby Im going sug gest such clubs recommend beginners purchase ESV other battery-condition checking device use least periodically throughout days flying session As respondent opposed Question No 3 stated Anybody cares anything about radio aircraft will faithfully monitor condition bat teries throughout flying day hope can said us Question No 4 another multi-part question first three parts suggesting mandatory checks radio range Tx & Rx bat teries control surface flutter prior fly ing AMA-sanctioned contests Since again suggesting mandatory rules sur prised see majority respondents favor Could Yes answers came modelers generally participate contests would therefore affected adop tion such rules respondent recognized frequent Scale contestant voted No three mandatory checks contests stated seasoned contest flier isn likely arrive scene unsafe lrplane went state fSllow needs have airplane checked safety newcomer local flying field someone hasnt long ex perience would very likely welcome check some extent agree statements although did witness destruc tion Scale Racer Cassutt believe World Championships back 1974 developed severe flutter its control surfaces Whether could have prevented third party doing preflight check dont know believe control surface flutter-check preflight inspection requirements IMAA-sanctioned events big birds would interested learn IMAA inspec tors have ever seen fit ground model because sloppy control surfaces could have caused flutter thing bear mind RC contest rules stipulate models being entered must have previously flown safe say no flutter experienced previous flights unlikely occur given contest Perhapsunless something undetected has worked loose control system over period time Question 4d two parts Most respond ents favor battery redundancy big models opposed fail-safe throttle servos question also asked readers opinions model weight above requirements would apply Responses latter part question say least diverse suggested weights varied low four five pounds high 30 lb respondent suggested low weight addressed fail-safe throttle said should requirement plane over about four five pounds ex pected fly 60 mph greater Several opposed fail-safe throttle concerned about cost such feature might just another thing go wrong orne system respondent opposed redundant bat teries felt automatic throttle cutoff low battery power ipuld useful could built radio having purchased radio bells-and-whistles features dont know cur rently feature built-in fail-safe throttle number years ago some radios did have capability would also neutralize control 132 Model Aviation 77 RO SOARING DIGEST CONTIOLINI ThU PROFILECOMBA 7RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & TIIDD Custom Diuvi Fish Ingredients detailed brochg,e50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29418 803-553-7169 A monthly publication covering International RO Soaring Scene SI 6lyearin USA US $20/yr Canada& Mexico US $24/yr elsewhere via airmail RCSD PO Box 269 Peterborough NH 03458 TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIOUES USED ON OUR PRO SERIES 3 SEE BELOW C S W WIDE BLADE EW EXTRA WIDE N NARROW 0 c$4$ e 0 L oP ~e 1lI 0C NIUM FAIR GROUNDS IMONIUM MARYLAND \ ~YORKROAD FAIRGROUNDS$ TIMONIUM RD lb F2N BALTIMOREw E s TAKE TIMONIUM RD EAST EXIT 16 OFF OF INTERSTATE 83 qE5 TO MD STATE FAIRGROUNDS DAN YARCHIN PO BOX 651 Owings Mills MD 21117 301-356-3170 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Rd. Towson MD 21204 301-825-8138 SPONSORED BY THE RADIO CONTROL MODELERS OF BALTIMORE surface servos As respondent pointed out neutralizing control surfaces trainertype model upon low battery power loss signal might save model However would unlikely prevent crash ad vanced model did possess inherent stability believe previous Safety columns concern ing big models Ive recommended use fail-safe devices close engine throttle recall describing incident giant model airborne battery pack fall Out model shortly after takeoff model inherently stable flew 10 miles before landing someones back yard fail-safe throttle could have prevented fly-away Although respondents opposed such device would recommend fail-safe throttle big model As redundant batteries favor too However batterycondition check performed before flight battery failure should minimized have much control over potential crash due radio interference Thats subject next question Question No 5 Radio Technique col umn January 1986 MA George Myers has discussed some length tests con ducted examine likelihood 31M third order intermodulation interference cer tain combinations frequencies used simultaneously Spacing out pilots along edge runway way minimize problem self-generated interference mean may creating own interference rather its coming outside source such pocket pager trans Available & L PAN AMERICAN INTL GJ HOBBIES SIG MEG R/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-Fl P60 SE-FI P60 RE-Fl P80 SE-Fl P80 R.E-FI P65 DUCTED FAN-R E -R P80 DUCTED FAN-R E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices sublect change notice mitter seems like least some respondents questionnaire must have read Georges columns since affirmative vote about 21 favor Mandatory pilot-spacing seems im portant large clubs Dave Abbe belongs such club Dave flys Pioneer Club Santa Clara CA has over 500 members reduce possibility self-generated 31M interference club field specified pilot locations assigned cer tain frequencies club used computer program determine frequencies likely combine cause 31M inter ference result worst offenders spaced farthest apart hope have future column Continued page 136 MICROMO TORI R/C MARINE ENGINES P21 SE-Fl P21 RE-Fl P45 RE-RI CO P65 RE-RI P80 RE-Rl P90 RE-RI R/C CAR-BUGGY-TETHER CAR P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICES! $8195 $81 95 $9995 $11095 $11795 $14395 ENGINES $7995 $7295 $6995 $11095 June1986 133 EASY TO NDCRAFTED KITS AT LOW PRICES VVII l F.A.JI OL III60 Length 53 inEngine 60Leng its include Pre-built fiberglass fuselage foam cores shaped strip ailerons complete hardware pack SEND CHECK OR MONEY ORDER TO,. VISA & MASTER CARD ACCEPTED ZON MODELS INC T-404 Kelly Ave Manchester NH 03103 603 627-9503 Safety/Preston Continued page 133 respondent opposed man dating pilot location club field nevertheless very concerned about radios interfering another enclosed let ter club sent AMA President John C Grigg expressed clubs con cern about ability radio manufacturers manufacture equipment will operate successfully frequency spacing tween channels reduced not-toodistant future Perhaps mandatory pilot-saving may way operate after 1991 Question No 6 Ten readers submitted other suggestions concerning safety RC flying fields Briefly summarized follow Get rid hotdoggers always edge wrong side flying safely Reduce interference having good clean primary-channel output Tx Good product review boards Everything magazines comes Out good have problems field Radio manufacturers should provide connec tors accommodate ESVs battery checks Increased punishment following already-set rules Get needle valve away spinning FAIRCHILDS MAGNIFICENT TANK KILLING A-b THUNDERBOLT H WARTHOG IN RELIABLE PROP VERSION SB WING SPAN FOR 60 ENGINE Plan No 104 $1400 postage paid wilkin USA N J resideols odd 6% soles tax RFM Design Research PO BOX 2393 VINCENTOWN NJ 08088 prop club have safety officers Experienced RCers pass knowledge newcomers Enforce rule keep spectators Out pits Ground models visual damage poor improper workmanship Maybe some video tapes scare guys couldnt care less about safety Have first aid kit possible telephone field emergencies Classify trainer models Primary Basic Advanced time read column will see May Safety column has addressed subject trainer models really arent trainers situation above respondents covered some length let ter havent already responded re quest May column thoughts classifying trainers Basic Advanced categories Im still interested hearing want thank responded reader questionnaire intend pass results AMA Safety Committee sug gest review Dave Abbes suggestions exception Question No 3 fail-safe throttle part Question No 5 ma jority readers appears agree Dave Have safe month Jo/in Preston 12235 Ti/den wood Dr Rock v/lie MD 20852 Plane Talk/Winter Continued page 26 curved fuselage lines beautify ugliness after cant see meticulously-done decorations mysterious panels lettering like military planes sort thing think Cut extract pilot am sure maybe neat rectangles inked portray locations airborne equipment Love mean-nothing arrows especially merely points jewel-like Saito inspired Chipley craft wonder Ye gods knows what doing flies great everyone can make statement note flight shot landing shows flies step Telemaster bonanza informational value itemjustifies break traditional format column data would make fine article magazine George Hen derson charter member Fallbrook RC Flyers California says has neither time talent lities produce article acceptable magazine wishes make system available other fliers Heres letter verbatim enjoyed very much too wish share Obviously impossible within column include detailed instructions provide full-size drawings authors feeling modelers level will able deduce combination photos drawings system works will able duplicate customize necessary parts Hender sons material normally would comprise fourpage article case would want contact him please write George Henderson 3662 Northcliff Dr Fallbrook CA 92028 Ive got 40-size Telemaster has real delight George tells us Au bralns Id make Telemaster hackers cannot better Ive currently made over 350 glider launcheseverything 2 x 4s Gentle Ladies Oly 650s Oly us overweight Para gon Mark Smiths Sensor 117 numerous unknown designs close full set parts friend can make installation Telemaster similar plane try design improve see fit 136 Model Aviation 4 EngIne 4U sheeted balsa machine cut balsa tail surfaces FREE FLIGHT SUPPLIES FAI Rubber Japanese Tissue Rubber Lube Nitrate Dope Front End Bearings Assemblies Crocket Hooks DT Fuse KSB Timers Cox Engines & Parts Kits Blue Ridge Peck Midway Micro-x others ox 5996 -Lake Worth FL 33461 CATALOG $100
Edition: Model Aviation - 1986/06
Page Numbers: 14, 16, 132, 133, 136
___John Preston___________________________ Safety Comes Fi RESPONSE Reader Questionnaire March 1986 issue 1 included questionnaire might improve safety RC flight operations suggestions made Dave Abbe California modeler letter wrote Bill Northrop publisher Model Builder magazine Bill published Daves letter Workbench column November 1985 issue MB Compared other solici tations readers response questions Ive previous columns has outstanding number letters As write February 28 1986 still trickling Since wrote March column Ive received both letter telephone call Dave Abbe has asked correct im pression may have received reading March column made seem letter being critical AMA opening paragraph stated Dave cited number reasons criticism aimed RC equipment manufacturers news media national organization words coined both Daves letter statement Bill Nor throp set record straight Dave wants known pro rather anti AMA point trying get across let ter MB safety flying field concern since AMA organiza tion seems logical effort improve RC flight safety should spearheaded AMA happen agree After get column mail intend sit down draft letter AMA Safe ty Committee summarizing results questionnaire soliciting views selection Daves suggestions respond ents clearly favored later column Meanwhile back results questionnaire Thirty-seven readers responded ques tionnaire respondent provided answer questions So add up yeas nays question will see cases total number votes cast fewer 37 respondents provided comments support answers Ill pass some first summary yes/no responses questions Analysis reader response questionnaire March 86 issue RC industry should read too 1 More uniform informative operating instructions 25-Yes 5-No 2 Should manufacturers standardize following components interchange ability 2a Servos 24Yes 7No 2b Batteries 24Yes 7No 2c Switch Harness 24Yes 7No 2d RC format 22Yes 7No 2e Other response discussed later 3 Should require mandatory battery checks before flight club flying fields 8Yes 24No 4 Should require mandatory checks of following before flight AMA-sanc tioned contests 4a Radio range 17Yes 6No 4b Tx & Rx batteries 16Yes 6No 4c Control surface flutter check 20Yes 7No 4d Should models over some specified weight state weight have battery redundancy fail-safe throttle Battery Redundancy 11Yes 5No Fail-safe throttle 7Yes 17No 5 Should AMA-chartered clubs specify pilot locations club flying field 13Yes 6No 6 Any other suggestions improve RC flying safety See discussion later Before discussing comments submitted some respondents let thank Fred Van Keuren Greenville MS Fred took initia tive poll 15 club members some thing thought wrote March safety column would have suggested Question No 1 hope some RC equipment manufacturers read column notice respondents 51 favor informa tive instructions comments some respondents provided seems may significant variation brand brand quality completeness operating instructions example reader voted no No 1 stated last radio Kraft accompanied very complete instructions Having owned recent Continued page 16 14 Model Aviation AMA Policy Statement results poll very teresting helpful However because very small number responses 37 out total approximately 80000 AMA members active some aspect RC flying Academy would need greater input act question naire-item reponses points addressed questionnaire tabulated results reply will however carefully considered along other factors appropriate AMA officers boards committees see further pursuit questions warranted C 1 p WE SAFETY CcMMlflE HAVE POUNr ThE FEREC AIRPLANE MATCH YOUR FLYING ABILITY 1 H/D500 Heavy Duty Metered Van Charger Heavy Duty version popular Metered Va Charger capable producing up 500 ma mllliampers current up 144 volts output variable stays constant throught charge period monitored accurately ter means can charge single 11 ma cell upto 12 SOOOma celIsI Perfect large D cell ni-cds 0 large glow plug batteries 12V starter batteries gall cells sealed lead acid bat teries wet cells etc Dependable solid state circuitry housed vinyl clad aluminum case years reliable service 34K60-ACE H/D 500 Charger kit 34K60C-ACE H/D 500 Charger asbld$3495 ORDERING INFO ACE products available dealer ho*ever need order direct send full amo unt plus $200 shipping han dung along catalog num j$ 116W 19 St PO Box 511MA Hlgginavllle MO 64037 call 816 584-7121 Complete catalog $200 I11tO little device sounds steady beep guide right plane Easily mounts smallest planes Use connector plug receiver same servo Also tells someone frequency solid state crystal oscillator Comes ready mount full structions included WT 1 oz DIM 1 x2 3/8 x IN USA CLUB DISCOUNTS AVAILABLE * ASK * SEND CHECK OR MONEY ORDER TO ELECTRONIC DESIGNS INC BOX Z 1925 GREENWOOD LK TPK HEWITT NEW JERSEY 07421 PHONE 201 728-1616 Plus $200 Shipping cont USA NJ Residents add 6% Sales Tax COD add $200 Allow 2 wks Shipping model Kraft radio myself would agree However another respondent voted Heck Yes said quite vividly remembered being beginner hobby haying kinds trouble learning about first radio engine plane radio major problem dont believe Dave Abbes suggestion better instructions aimed modeling products other radios However several respondents voiced displeas ure instructions accompanied engines remember engine pur chased several years ago accom panied operating instructions thing box besides engine itself sheet warnings told what what might happen ignored necessary item no help figuring out best prop what recom mended fuel etc Some respondents also stated some model kits have poor instructions reader John Hough Platte City MO included letter Construction Guide accompanied ARE kit Although guide does say model intended trainer certainly has appearance typical trainer may well appeal beginner construction guide consisted three pages two contained total four drawings showing exploded views portions model few captions last page illustrated suggested control surface throw aileron elevator rudder together picture transmitter showing stick should operate control surfaces Unfortunately illustrations Mode setup rarely used US RC fliers Johns com ment drawings sorely missing real instructions agree construc tion guide contained absolutely nothing con cerning radio installation opinion based reader response question No 1 room improve ment instructions accompanying some radios some engines kits Manu facturers take note Question No 2 As anticipated majority respondents over 31 favor stand ardizing components RC equipment assure interchangeability Several stated standardization related safety thought myself wrote March column However others pointed out lot modelers cannot make decent soldered connection situation could compromise safety flying have changed connectors say servos guess have mixed emotions standard izing components feel would bene ficial average modeler able use brand servo specific receiver having go through chore changing connecting plugs However said March column manufacturers may have sound technical reasons wanting standardize equipment Since respondents identified themselves manufac turers have no way knowing industry people feel about issue reason having unique connectors pointed out recent letter Dave Abbe incompatibility due different pulse polarity operating voltage other hand pulse polarity battery voltage could also standardizedI think Im Continued page 132 16 Model Aviation E II/D500 99 ONLY LEADER IN COMPETITION PROPELLERS NEW THP DESIGN /DIAPRICE 13 J12299 379 14479 15689 16989 NEW PITCH fliP 66 77 8 6778 677 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 6334568169 6I4566/7199 94566/77199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678989 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 54N279 8I 6778299 SERIES 400C 866777289 97289 Safety Preston Continued page 16 electronics expert comments would welcome readers knowledgeable subject Question No 3 Again anticipated respondents would opposed mandating battery checks club field walks life have found people generally op posed mandatory rules regulations Mandatory use automobile seat belts good example Typical comments sub mitted negative voters would nearly impossible enforce would policeman AMA clubs fly ing site anonymous response written notepaper Thai Hut Restaurant Wheaton MD stated No absolutely No Rules respondent submitted comment Question No 6 Any other sugges tions stated rules need rather much knowledge ex perienced RCers can pass newcomers hobby will determine safe operations March column stated belief mandatory battery checks club fields might difficultor impossible enforce other hand think Thai Hut Restau rants suggestion experience ex perts needs conveyed beginners en sure safety good larger RC clubs have formal semi-formal flighttraining programs new members beginners RC hobby Im going sug gest such clubs recommend beginners purchase ESV other battery-condition checking device use least periodically throughout days flying session As respondent opposed Question No 3 stated Anybody cares anything about radio aircraft will faithfully monitor condition bat teries throughout flying day hope can said us Question No 4 another multi-part question first three parts suggesting mandatory checks radio range Tx & Rx bat teries control surface flutter prior fly ing AMA-sanctioned contests Since again suggesting mandatory rules sur prised see majority respondents favor Could Yes answers came modelers generally participate contests would therefore affected adop tion such rules respondent recognized frequent Scale contestant voted No three mandatory checks contests stated seasoned contest flier isn likely arrive scene unsafe lrplane went state fSllow needs have airplane checked safety newcomer local flying field someone hasnt long ex perience would very likely welcome check some extent agree statements although did witness destruc tion Scale Racer Cassutt believe World Championships back 1974 developed severe flutter its control surfaces Whether could have prevented third party doing preflight check dont know believe control surface flutter-check preflight inspection requirements IMAA-sanctioned events big birds would interested learn IMAA inspec tors have ever seen fit ground model because sloppy control surfaces could have caused flutter thing bear mind RC contest rules stipulate models being entered must have previously flown safe say no flutter experienced previous flights unlikely occur given contest Perhapsunless something undetected has worked loose control system over period time Question 4d two parts Most respond ents favor battery redundancy big models opposed fail-safe throttle servos question also asked readers opinions model weight above requirements would apply Responses latter part question say least diverse suggested weights varied low four five pounds high 30 lb respondent suggested low weight addressed fail-safe throttle said should requirement plane over about four five pounds ex pected fly 60 mph greater Several opposed fail-safe throttle concerned about cost such feature might just another thing go wrong orne system respondent opposed redundant bat teries felt automatic throttle cutoff low battery power ipuld useful could built radio having purchased radio bells-and-whistles features dont know cur rently feature built-in fail-safe throttle number years ago some radios did have capability would also neutralize control 132 Model Aviation 77 RO SOARING DIGEST CONTIOLINI ThU PROFILECOMBA 7RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & TIIDD Custom Diuvi Fish Ingredients detailed brochg,e50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29418 803-553-7169 A monthly publication covering International RO Soaring Scene SI 6lyearin USA US $20/yr Canada& Mexico US $24/yr elsewhere via airmail RCSD PO Box 269 Peterborough NH 03458 TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIOUES USED ON OUR PRO SERIES 3 SEE BELOW C S W WIDE BLADE EW EXTRA WIDE N NARROW 0 c$4$ e 0 L oP ~e 1lI 0C NIUM FAIR GROUNDS IMONIUM MARYLAND \ ~YORKROAD FAIRGROUNDS$ TIMONIUM RD lb F2N BALTIMOREw E s TAKE TIMONIUM RD EAST EXIT 16 OFF OF INTERSTATE 83 qE5 TO MD STATE FAIRGROUNDS DAN YARCHIN PO BOX 651 Owings Mills MD 21117 301-356-3170 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Rd. Towson MD 21204 301-825-8138 SPONSORED BY THE RADIO CONTROL MODELERS OF BALTIMORE surface servos As respondent pointed out neutralizing control surfaces trainertype model upon low battery power loss signal might save model However would unlikely prevent crash ad vanced model did possess inherent stability believe previous Safety columns concern ing big models Ive recommended use fail-safe devices close engine throttle recall describing incident giant model airborne battery pack fall Out model shortly after takeoff model inherently stable flew 10 miles before landing someones back yard fail-safe throttle could have prevented fly-away Although respondents opposed such device would recommend fail-safe throttle big model As redundant batteries favor too However batterycondition check performed before flight battery failure should minimized have much control over potential crash due radio interference Thats subject next question Question No 5 Radio Technique col umn January 1986 MA George Myers has discussed some length tests con ducted examine likelihood 31M third order intermodulation interference cer tain combinations frequencies used simultaneously Spacing out pilots along edge runway way minimize problem self-generated interference mean may creating own interference rather its coming outside source such pocket pager trans Available & L PAN AMERICAN INTL GJ HOBBIES SIG MEG R/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-Fl P60 SE-FI P60 RE-Fl P80 SE-Fl P80 R.E-FI P65 DUCTED FAN-R E -R P80 DUCTED FAN-R E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices sublect change notice mitter seems like least some respondents questionnaire must have read Georges columns since affirmative vote about 21 favor Mandatory pilot-spacing seems im portant large clubs Dave Abbe belongs such club Dave flys Pioneer Club Santa Clara CA has over 500 members reduce possibility self-generated 31M interference club field specified pilot locations assigned cer tain frequencies club used computer program determine frequencies likely combine cause 31M inter ference result worst offenders spaced farthest apart hope have future column Continued page 136 MICROMO TORI R/C MARINE ENGINES P21 SE-Fl P21 RE-Fl P45 RE-RI CO P65 RE-RI P80 RE-Rl P90 RE-RI R/C CAR-BUGGY-TETHER CAR P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICES! $8195 $81 95 $9995 $11095 $11795 $14395 ENGINES $7995 $7295 $6995 $11095 June1986 133 EASY TO NDCRAFTED KITS AT LOW PRICES VVII l F.A.JI OL III60 Length 53 inEngine 60Leng its include Pre-built fiberglass fuselage foam cores shaped strip ailerons complete hardware pack SEND CHECK OR MONEY ORDER TO,. VISA & MASTER CARD ACCEPTED ZON MODELS INC T-404 Kelly Ave Manchester NH 03103 603 627-9503 Safety/Preston Continued page 133 respondent opposed man dating pilot location club field nevertheless very concerned about radios interfering another enclosed let ter club sent AMA President John C Grigg expressed clubs con cern about ability radio manufacturers manufacture equipment will operate successfully frequency spacing tween channels reduced not-toodistant future Perhaps mandatory pilot-saving may way operate after 1991 Question No 6 Ten readers submitted other suggestions concerning safety RC flying fields Briefly summarized follow Get rid hotdoggers always edge wrong side flying safely Reduce interference having good clean primary-channel output Tx Good product review boards Everything magazines comes Out good have problems field Radio manufacturers should provide connec tors accommodate ESVs battery checks Increased punishment following already-set rules Get needle valve away spinning FAIRCHILDS MAGNIFICENT TANK KILLING A-b THUNDERBOLT H WARTHOG IN RELIABLE PROP VERSION SB WING SPAN FOR 60 ENGINE Plan No 104 $1400 postage paid wilkin USA N J resideols odd 6% soles tax RFM Design Research PO BOX 2393 VINCENTOWN NJ 08088 prop club have safety officers Experienced RCers pass knowledge newcomers Enforce rule keep spectators Out pits Ground models visual damage poor improper workmanship Maybe some video tapes scare guys couldnt care less about safety Have first aid kit possible telephone field emergencies Classify trainer models Primary Basic Advanced time read column will see May Safety column has addressed subject trainer models really arent trainers situation above respondents covered some length let ter havent already responded re quest May column thoughts classifying trainers Basic Advanced categories Im still interested hearing want thank responded reader questionnaire intend pass results AMA Safety Committee sug gest review Dave Abbes suggestions exception Question No 3 fail-safe throttle part Question No 5 ma jority readers appears agree Dave Have safe month Jo/in Preston 12235 Ti/den wood Dr Rock v/lie MD 20852 Plane Talk/Winter Continued page 26 curved fuselage lines beautify ugliness after cant see meticulously-done decorations mysterious panels lettering like military planes sort thing think Cut extract pilot am sure maybe neat rectangles inked portray locations airborne equipment Love mean-nothing arrows especially merely points jewel-like Saito inspired Chipley craft wonder Ye gods knows what doing flies great everyone can make statement note flight shot landing shows flies step Telemaster bonanza informational value itemjustifies break traditional format column data would make fine article magazine George Hen derson charter member Fallbrook RC Flyers California says has neither time talent lities produce article acceptable magazine wishes make system available other fliers Heres letter verbatim enjoyed very much too wish share Obviously impossible within column include detailed instructions provide full-size drawings authors feeling modelers level will able deduce combination photos drawings system works will able duplicate customize necessary parts Hender sons material normally would comprise fourpage article case would want contact him please write George Henderson 3662 Northcliff Dr Fallbrook CA 92028 Ive got 40-size Telemaster has real delight George tells us Au bralns Id make Telemaster hackers cannot better Ive currently made over 350 glider launcheseverything 2 x 4s Gentle Ladies Oly 650s Oly us overweight Para gon Mark Smiths Sensor 117 numerous unknown designs close full set parts friend can make installation Telemaster similar plane try design improve see fit 136 Model Aviation 4 EngIne 4U sheeted balsa machine cut balsa tail surfaces FREE FLIGHT SUPPLIES FAI Rubber Japanese Tissue Rubber Lube Nitrate Dope Front End Bearings Assemblies Crocket Hooks DT Fuse KSB Timers Cox Engines & Parts Kits Blue Ridge Peck Midway Micro-x others ox 5996 -Lake Worth FL 33461 CATALOG $100
Edition: Model Aviation - 1986/06
Page Numbers: 14, 16, 132, 133, 136
___John Preston___________________________ Safety Comes Fi RESPONSE Reader Questionnaire March 1986 issue 1 included questionnaire might improve safety RC flight operations suggestions made Dave Abbe California modeler letter wrote Bill Northrop publisher Model Builder magazine Bill published Daves letter Workbench column November 1985 issue MB Compared other solici tations readers response questions Ive previous columns has outstanding number letters As write February 28 1986 still trickling Since wrote March column Ive received both letter telephone call Dave Abbe has asked correct im pression may have received reading March column made seem letter being critical AMA opening paragraph stated Dave cited number reasons criticism aimed RC equipment manufacturers news media national organization words coined both Daves letter statement Bill Nor throp set record straight Dave wants known pro rather anti AMA point trying get across let ter MB safety flying field concern since AMA organiza tion seems logical effort improve RC flight safety should spearheaded AMA happen agree After get column mail intend sit down draft letter AMA Safe ty Committee summarizing results questionnaire soliciting views selection Daves suggestions respond ents clearly favored later column Meanwhile back results questionnaire Thirty-seven readers responded ques tionnaire respondent provided answer questions So add up yeas nays question will see cases total number votes cast fewer 37 respondents provided comments support answers Ill pass some first summary yes/no responses questions Analysis reader response questionnaire March 86 issue RC industry should read too 1 More uniform informative operating instructions 25-Yes 5-No 2 Should manufacturers standardize following components interchange ability 2a Servos 24Yes 7No 2b Batteries 24Yes 7No 2c Switch Harness 24Yes 7No 2d RC format 22Yes 7No 2e Other response discussed later 3 Should require mandatory battery checks before flight club flying fields 8Yes 24No 4 Should require mandatory checks of following before flight AMA-sanc tioned contests 4a Radio range 17Yes 6No 4b Tx & Rx batteries 16Yes 6No 4c Control surface flutter check 20Yes 7No 4d Should models over some specified weight state weight have battery redundancy fail-safe throttle Battery Redundancy 11Yes 5No Fail-safe throttle 7Yes 17No 5 Should AMA-chartered clubs specify pilot locations club flying field 13Yes 6No 6 Any other suggestions improve RC flying safety See discussion later Before discussing comments submitted some respondents let thank Fred Van Keuren Greenville MS Fred took initia tive poll 15 club members some thing thought wrote March safety column would have suggested Question No 1 hope some RC equipment manufacturers read column notice respondents 51 favor informa tive instructions comments some respondents provided seems may significant variation brand brand quality completeness operating instructions example reader voted no No 1 stated last radio Kraft accompanied very complete instructions Having owned recent Continued page 16 14 Model Aviation AMA Policy Statement results poll very teresting helpful However because very small number responses 37 out total approximately 80000 AMA members active some aspect RC flying Academy would need greater input act question naire-item reponses points addressed questionnaire tabulated results reply will however carefully considered along other factors appropriate AMA officers boards committees see further pursuit questions warranted C 1 p WE SAFETY CcMMlflE HAVE POUNr ThE FEREC AIRPLANE MATCH YOUR FLYING ABILITY 1 H/D500 Heavy Duty Metered Van Charger Heavy Duty version popular Metered Va Charger capable producing up 500 ma mllliampers current up 144 volts output variable stays constant throught charge period monitored accurately ter means can charge single 11 ma cell upto 12 SOOOma celIsI Perfect large D cell ni-cds 0 large glow plug batteries 12V starter batteries gall cells sealed lead acid bat teries wet cells etc Dependable solid state circuitry housed vinyl clad aluminum case years reliable service 34K60-ACE H/D 500 Charger kit 34K60C-ACE H/D 500 Charger asbld$3495 ORDERING INFO ACE products available dealer ho*ever need order direct send full amo unt plus $200 shipping han dung along catalog num j$ 116W 19 St PO Box 511MA Hlgginavllle MO 64037 call 816 584-7121 Complete catalog $200 I11tO little device sounds steady beep guide right plane Easily mounts smallest planes Use connector plug receiver same servo Also tells someone frequency solid state crystal oscillator Comes ready mount full structions included WT 1 oz DIM 1 x2 3/8 x IN USA CLUB DISCOUNTS AVAILABLE * ASK * SEND CHECK OR MONEY ORDER TO ELECTRONIC DESIGNS INC BOX Z 1925 GREENWOOD LK TPK HEWITT NEW JERSEY 07421 PHONE 201 728-1616 Plus $200 Shipping cont USA NJ Residents add 6% Sales Tax COD add $200 Allow 2 wks Shipping model Kraft radio myself would agree However another respondent voted Heck Yes said quite vividly remembered being beginner hobby haying kinds trouble learning about first radio engine plane radio major problem dont believe Dave Abbes suggestion better instructions aimed modeling products other radios However several respondents voiced displeas ure instructions accompanied engines remember engine pur chased several years ago accom panied operating instructions thing box besides engine itself sheet warnings told what what might happen ignored necessary item no help figuring out best prop what recom mended fuel etc Some respondents also stated some model kits have poor instructions reader John Hough Platte City MO included letter Construction Guide accompanied ARE kit Although guide does say model intended trainer certainly has appearance typical trainer may well appeal beginner construction guide consisted three pages two contained total four drawings showing exploded views portions model few captions last page illustrated suggested control surface throw aileron elevator rudder together picture transmitter showing stick should operate control surfaces Unfortunately illustrations Mode setup rarely used US RC fliers Johns com ment drawings sorely missing real instructions agree construc tion guide contained absolutely nothing con cerning radio installation opinion based reader response question No 1 room improve ment instructions accompanying some radios some engines kits Manu facturers take note Question No 2 As anticipated majority respondents over 31 favor stand ardizing components RC equipment assure interchangeability Several stated standardization related safety thought myself wrote March column However others pointed out lot modelers cannot make decent soldered connection situation could compromise safety flying have changed connectors say servos guess have mixed emotions standard izing components feel would bene ficial average modeler able use brand servo specific receiver having go through chore changing connecting plugs However said March column manufacturers may have sound technical reasons wanting standardize equipment Since respondents identified themselves manufac turers have no way knowing industry people feel about issue reason having unique connectors pointed out recent letter Dave Abbe incompatibility due different pulse polarity operating voltage other hand pulse polarity battery voltage could also standardizedI think Im Continued page 132 16 Model Aviation E II/D500 99 ONLY LEADER IN COMPETITION PROPELLERS NEW THP DESIGN /DIAPRICE 13 J12299 379 14479 15689 16989 NEW PITCH fliP 66 77 8 6778 677 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 6334568169 6I4566/7199 94566/77199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678989 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 54N279 8I 6778299 SERIES 400C 866777289 97289 Safety Preston Continued page 16 electronics expert comments would welcome readers knowledgeable subject Question No 3 Again anticipated respondents would opposed mandating battery checks club field walks life have found people generally op posed mandatory rules regulations Mandatory use automobile seat belts good example Typical comments sub mitted negative voters would nearly impossible enforce would policeman AMA clubs fly ing site anonymous response written notepaper Thai Hut Restaurant Wheaton MD stated No absolutely No Rules respondent submitted comment Question No 6 Any other sugges tions stated rules need rather much knowledge ex perienced RCers can pass newcomers hobby will determine safe operations March column stated belief mandatory battery checks club fields might difficultor impossible enforce other hand think Thai Hut Restau rants suggestion experience ex perts needs conveyed beginners en sure safety good larger RC clubs have formal semi-formal flighttraining programs new members beginners RC hobby Im going sug gest such clubs recommend beginners purchase ESV other battery-condition checking device use least periodically throughout days flying session As respondent opposed Question No 3 stated Anybody cares anything about radio aircraft will faithfully monitor condition bat teries throughout flying day hope can said us Question No 4 another multi-part question first three parts suggesting mandatory checks radio range Tx & Rx bat teries control surface flutter prior fly ing AMA-sanctioned contests Since again suggesting mandatory rules sur prised see majority respondents favor Could Yes answers came modelers generally participate contests would therefore affected adop tion such rules respondent recognized frequent Scale contestant voted No three mandatory checks contests stated seasoned contest flier isn likely arrive scene unsafe lrplane went state fSllow needs have airplane checked safety newcomer local flying field someone hasnt long ex perience would very likely welcome check some extent agree statements although did witness destruc tion Scale Racer Cassutt believe World Championships back 1974 developed severe flutter its control surfaces Whether could have prevented third party doing preflight check dont know believe control surface flutter-check preflight inspection requirements IMAA-sanctioned events big birds would interested learn IMAA inspec tors have ever seen fit ground model because sloppy control surfaces could have caused flutter thing bear mind RC contest rules stipulate models being entered must have previously flown safe say no flutter experienced previous flights unlikely occur given contest Perhapsunless something undetected has worked loose control system over period time Question 4d two parts Most respond ents favor battery redundancy big models opposed fail-safe throttle servos question also asked readers opinions model weight above requirements would apply Responses latter part question say least diverse suggested weights varied low four five pounds high 30 lb respondent suggested low weight addressed fail-safe throttle said should requirement plane over about four five pounds ex pected fly 60 mph greater Several opposed fail-safe throttle concerned about cost such feature might just another thing go wrong orne system respondent opposed redundant bat teries felt automatic throttle cutoff low battery power ipuld useful could built radio having purchased radio bells-and-whistles features dont know cur rently feature built-in fail-safe throttle number years ago some radios did have capability would also neutralize control 132 Model Aviation 77 RO SOARING DIGEST CONTIOLINI ThU PROFILECOMBA 7RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & TIIDD Custom Diuvi Fish Ingredients detailed brochg,e50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29418 803-553-7169 A monthly publication covering International RO Soaring Scene SI 6lyearin USA US $20/yr Canada& Mexico US $24/yr elsewhere via airmail RCSD PO Box 269 Peterborough NH 03458 TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIOUES USED ON OUR PRO SERIES 3 SEE BELOW C S W WIDE BLADE EW EXTRA WIDE N NARROW 0 c$4$ e 0 L oP ~e 1lI 0C NIUM FAIR GROUNDS IMONIUM MARYLAND \ ~YORKROAD FAIRGROUNDS$ TIMONIUM RD lb F2N BALTIMOREw E s TAKE TIMONIUM RD EAST EXIT 16 OFF OF INTERSTATE 83 qE5 TO MD STATE FAIRGROUNDS DAN YARCHIN PO BOX 651 Owings Mills MD 21117 301-356-3170 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Rd. Towson MD 21204 301-825-8138 SPONSORED BY THE RADIO CONTROL MODELERS OF BALTIMORE surface servos As respondent pointed out neutralizing control surfaces trainertype model upon low battery power loss signal might save model However would unlikely prevent crash ad vanced model did possess inherent stability believe previous Safety columns concern ing big models Ive recommended use fail-safe devices close engine throttle recall describing incident giant model airborne battery pack fall Out model shortly after takeoff model inherently stable flew 10 miles before landing someones back yard fail-safe throttle could have prevented fly-away Although respondents opposed such device would recommend fail-safe throttle big model As redundant batteries favor too However batterycondition check performed before flight battery failure should minimized have much control over potential crash due radio interference Thats subject next question Question No 5 Radio Technique col umn January 1986 MA George Myers has discussed some length tests con ducted examine likelihood 31M third order intermodulation interference cer tain combinations frequencies used simultaneously Spacing out pilots along edge runway way minimize problem self-generated interference mean may creating own interference rather its coming outside source such pocket pager trans Available & L PAN AMERICAN INTL GJ HOBBIES SIG MEG R/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-Fl P60 SE-FI P60 RE-Fl P80 SE-Fl P80 R.E-FI P65 DUCTED FAN-R E -R P80 DUCTED FAN-R E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices sublect change notice mitter seems like least some respondents questionnaire must have read Georges columns since affirmative vote about 21 favor Mandatory pilot-spacing seems im portant large clubs Dave Abbe belongs such club Dave flys Pioneer Club Santa Clara CA has over 500 members reduce possibility self-generated 31M interference club field specified pilot locations assigned cer tain frequencies club used computer program determine frequencies likely combine cause 31M inter ference result worst offenders spaced farthest apart hope have future column Continued page 136 MICROMO TORI R/C MARINE ENGINES P21 SE-Fl P21 RE-Fl P45 RE-RI CO P65 RE-RI P80 RE-Rl P90 RE-RI R/C CAR-BUGGY-TETHER CAR P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICES! $8195 $81 95 $9995 $11095 $11795 $14395 ENGINES $7995 $7295 $6995 $11095 June1986 133 EASY TO NDCRAFTED KITS AT LOW PRICES VVII l F.A.JI OL III60 Length 53 inEngine 60Leng its include Pre-built fiberglass fuselage foam cores shaped strip ailerons complete hardware pack SEND CHECK OR MONEY ORDER TO,. VISA & MASTER CARD ACCEPTED ZON MODELS INC T-404 Kelly Ave Manchester NH 03103 603 627-9503 Safety/Preston Continued page 133 respondent opposed man dating pilot location club field nevertheless very concerned about radios interfering another enclosed let ter club sent AMA President John C Grigg expressed clubs con cern about ability radio manufacturers manufacture equipment will operate successfully frequency spacing tween channels reduced not-toodistant future Perhaps mandatory pilot-saving may way operate after 1991 Question No 6 Ten readers submitted other suggestions concerning safety RC flying fields Briefly summarized follow Get rid hotdoggers always edge wrong side flying safely Reduce interference having good clean primary-channel output Tx Good product review boards Everything magazines comes Out good have problems field Radio manufacturers should provide connec tors accommodate ESVs battery checks Increased punishment following already-set rules Get needle valve away spinning FAIRCHILDS MAGNIFICENT TANK KILLING A-b THUNDERBOLT H WARTHOG IN RELIABLE PROP VERSION SB WING SPAN FOR 60 ENGINE Plan No 104 $1400 postage paid wilkin USA N J resideols odd 6% soles tax RFM Design Research PO BOX 2393 VINCENTOWN NJ 08088 prop club have safety officers Experienced RCers pass knowledge newcomers Enforce rule keep spectators Out pits Ground models visual damage poor improper workmanship Maybe some video tapes scare guys couldnt care less about safety Have first aid kit possible telephone field emergencies Classify trainer models Primary Basic Advanced time read column will see May Safety column has addressed subject trainer models really arent trainers situation above respondents covered some length let ter havent already responded re quest May column thoughts classifying trainers Basic Advanced categories Im still interested hearing want thank responded reader questionnaire intend pass results AMA Safety Committee sug gest review Dave Abbes suggestions exception Question No 3 fail-safe throttle part Question No 5 ma jority readers appears agree Dave Have safe month Jo/in Preston 12235 Ti/den wood Dr Rock v/lie MD 20852 Plane Talk/Winter Continued page 26 curved fuselage lines beautify ugliness after cant see meticulously-done decorations mysterious panels lettering like military planes sort thing think Cut extract pilot am sure maybe neat rectangles inked portray locations airborne equipment Love mean-nothing arrows especially merely points jewel-like Saito inspired Chipley craft wonder Ye gods knows what doing flies great everyone can make statement note flight shot landing shows flies step Telemaster bonanza informational value itemjustifies break traditional format column data would make fine article magazine George Hen derson charter member Fallbrook RC Flyers California says has neither time talent lities produce article acceptable magazine wishes make system available other fliers Heres letter verbatim enjoyed very much too wish share Obviously impossible within column include detailed instructions provide full-size drawings authors feeling modelers level will able deduce combination photos drawings system works will able duplicate customize necessary parts Hender sons material normally would comprise fourpage article case would want contact him please write George Henderson 3662 Northcliff Dr Fallbrook CA 92028 Ive got 40-size Telemaster has real delight George tells us Au bralns Id make Telemaster hackers cannot better Ive currently made over 350 glider launcheseverything 2 x 4s Gentle Ladies Oly 650s Oly us overweight Para gon Mark Smiths Sensor 117 numerous unknown designs close full set parts friend can make installation Telemaster similar plane try design improve see fit 136 Model Aviation 4 EngIne 4U sheeted balsa machine cut balsa tail surfaces FREE FLIGHT SUPPLIES FAI Rubber Japanese Tissue Rubber Lube Nitrate Dope Front End Bearings Assemblies Crocket Hooks DT Fuse KSB Timers Cox Engines & Parts Kits Blue Ridge Peck Midway Micro-x others ox 5996 -Lake Worth FL 33461 CATALOG $100
Edition: Model Aviation - 1986/06
Page Numbers: 14, 16, 132, 133, 136
___John Preston___________________________ Safety Comes Fi RESPONSE Reader Questionnaire March 1986 issue 1 included questionnaire might improve safety RC flight operations suggestions made Dave Abbe California modeler letter wrote Bill Northrop publisher Model Builder magazine Bill published Daves letter Workbench column November 1985 issue MB Compared other solici tations readers response questions Ive previous columns has outstanding number letters As write February 28 1986 still trickling Since wrote March column Ive received both letter telephone call Dave Abbe has asked correct im pression may have received reading March column made seem letter being critical AMA opening paragraph stated Dave cited number reasons criticism aimed RC equipment manufacturers news media national organization words coined both Daves letter statement Bill Nor throp set record straight Dave wants known pro rather anti AMA point trying get across let ter MB safety flying field concern since AMA organiza tion seems logical effort improve RC flight safety should spearheaded AMA happen agree After get column mail intend sit down draft letter AMA Safe ty Committee summarizing results questionnaire soliciting views selection Daves suggestions respond ents clearly favored later column Meanwhile back results questionnaire Thirty-seven readers responded ques tionnaire respondent provided answer questions So add up yeas nays question will see cases total number votes cast fewer 37 respondents provided comments support answers Ill pass some first summary yes/no responses questions Analysis reader response questionnaire March 86 issue RC industry should read too 1 More uniform informative operating instructions 25-Yes 5-No 2 Should manufacturers standardize following components interchange ability 2a Servos 24Yes 7No 2b Batteries 24Yes 7No 2c Switch Harness 24Yes 7No 2d RC format 22Yes 7No 2e Other response discussed later 3 Should require mandatory battery checks before flight club flying fields 8Yes 24No 4 Should require mandatory checks of following before flight AMA-sanc tioned contests 4a Radio range 17Yes 6No 4b Tx & Rx batteries 16Yes 6No 4c Control surface flutter check 20Yes 7No 4d Should models over some specified weight state weight have battery redundancy fail-safe throttle Battery Redundancy 11Yes 5No Fail-safe throttle 7Yes 17No 5 Should AMA-chartered clubs specify pilot locations club flying field 13Yes 6No 6 Any other suggestions improve RC flying safety See discussion later Before discussing comments submitted some respondents let thank Fred Van Keuren Greenville MS Fred took initia tive poll 15 club members some thing thought wrote March safety column would have suggested Question No 1 hope some RC equipment manufacturers read column notice respondents 51 favor informa tive instructions comments some respondents provided seems may significant variation brand brand quality completeness operating instructions example reader voted no No 1 stated last radio Kraft accompanied very complete instructions Having owned recent Continued page 16 14 Model Aviation AMA Policy Statement results poll very teresting helpful However because very small number responses 37 out total approximately 80000 AMA members active some aspect RC flying Academy would need greater input act question naire-item reponses points addressed questionnaire tabulated results reply will however carefully considered along other factors appropriate AMA officers boards committees see further pursuit questions warranted C 1 p WE SAFETY CcMMlflE HAVE POUNr ThE FEREC AIRPLANE MATCH YOUR FLYING ABILITY 1 H/D500 Heavy Duty Metered Van Charger Heavy Duty version popular Metered Va Charger capable producing up 500 ma mllliampers current up 144 volts output variable stays constant throught charge period monitored accurately ter means can charge single 11 ma cell upto 12 SOOOma celIsI Perfect large D cell ni-cds 0 large glow plug batteries 12V starter batteries gall cells sealed lead acid bat teries wet cells etc Dependable solid state circuitry housed vinyl clad aluminum case years reliable service 34K60-ACE H/D 500 Charger kit 34K60C-ACE H/D 500 Charger asbld$3495 ORDERING INFO ACE products available dealer ho*ever need order direct send full amo unt plus $200 shipping han dung along catalog num j$ 116W 19 St PO Box 511MA Hlgginavllle MO 64037 call 816 584-7121 Complete catalog $200 I11tO little device sounds steady beep guide right plane Easily mounts smallest planes Use connector plug receiver same servo Also tells someone frequency solid state crystal oscillator Comes ready mount full structions included WT 1 oz DIM 1 x2 3/8 x IN USA CLUB DISCOUNTS AVAILABLE * ASK * SEND CHECK OR MONEY ORDER TO ELECTRONIC DESIGNS INC BOX Z 1925 GREENWOOD LK TPK HEWITT NEW JERSEY 07421 PHONE 201 728-1616 Plus $200 Shipping cont USA NJ Residents add 6% Sales Tax COD add $200 Allow 2 wks Shipping model Kraft radio myself would agree However another respondent voted Heck Yes said quite vividly remembered being beginner hobby haying kinds trouble learning about first radio engine plane radio major problem dont believe Dave Abbes suggestion better instructions aimed modeling products other radios However several respondents voiced displeas ure instructions accompanied engines remember engine pur chased several years ago accom panied operating instructions thing box besides engine itself sheet warnings told what what might happen ignored necessary item no help figuring out best prop what recom mended fuel etc Some respondents also stated some model kits have poor instructions reader John Hough Platte City MO included letter Construction Guide accompanied ARE kit Although guide does say model intended trainer certainly has appearance typical trainer may well appeal beginner construction guide consisted three pages two contained total four drawings showing exploded views portions model few captions last page illustrated suggested control surface throw aileron elevator rudder together picture transmitter showing stick should operate control surfaces Unfortunately illustrations Mode setup rarely used US RC fliers Johns com ment drawings sorely missing real instructions agree construc tion guide contained absolutely nothing con cerning radio installation opinion based reader response question No 1 room improve ment instructions accompanying some radios some engines kits Manu facturers take note Question No 2 As anticipated majority respondents over 31 favor stand ardizing components RC equipment assure interchangeability Several stated standardization related safety thought myself wrote March column However others pointed out lot modelers cannot make decent soldered connection situation could compromise safety flying have changed connectors say servos guess have mixed emotions standard izing components feel would bene ficial average modeler able use brand servo specific receiver having go through chore changing connecting plugs However said March column manufacturers may have sound technical reasons wanting standardize equipment Since respondents identified themselves manufac turers have no way knowing industry people feel about issue reason having unique connectors pointed out recent letter Dave Abbe incompatibility due different pulse polarity operating voltage other hand pulse polarity battery voltage could also standardizedI think Im Continued page 132 16 Model Aviation E II/D500 99 ONLY LEADER IN COMPETITION PROPELLERS NEW THP DESIGN /DIAPRICE 13 J12299 379 14479 15689 16989 NEW PITCH fliP 66 77 8 6778 677 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 6334568169 6I4566/7199 94566/77199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678989 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 54N279 8I 6778299 SERIES 400C 866777289 97289 Safety Preston Continued page 16 electronics expert comments would welcome readers knowledgeable subject Question No 3 Again anticipated respondents would opposed mandating battery checks club field walks life have found people generally op posed mandatory rules regulations Mandatory use automobile seat belts good example Typical comments sub mitted negative voters would nearly impossible enforce would policeman AMA clubs fly ing site anonymous response written notepaper Thai Hut Restaurant Wheaton MD stated No absolutely No Rules respondent submitted comment Question No 6 Any other sugges tions stated rules need rather much knowledge ex perienced RCers can pass newcomers hobby will determine safe operations March column stated belief mandatory battery checks club fields might difficultor impossible enforce other hand think Thai Hut Restau rants suggestion experience ex perts needs conveyed beginners en sure safety good larger RC clubs have formal semi-formal flighttraining programs new members beginners RC hobby Im going sug gest such clubs recommend beginners purchase ESV other battery-condition checking device use least periodically throughout days flying session As respondent opposed Question No 3 stated Anybody cares anything about radio aircraft will faithfully monitor condition bat teries throughout flying day hope can said us Question No 4 another multi-part question first three parts suggesting mandatory checks radio range Tx & Rx bat teries control surface flutter prior fly ing AMA-sanctioned contests Since again suggesting mandatory rules sur prised see majority respondents favor Could Yes answers came modelers generally participate contests would therefore affected adop tion such rules respondent recognized frequent Scale contestant voted No three mandatory checks contests stated seasoned contest flier isn likely arrive scene unsafe lrplane went state fSllow needs have airplane checked safety newcomer local flying field someone hasnt long ex perience would very likely welcome check some extent agree statements although did witness destruc tion Scale Racer Cassutt believe World Championships back 1974 developed severe flutter its control surfaces Whether could have prevented third party doing preflight check dont know believe control surface flutter-check preflight inspection requirements IMAA-sanctioned events big birds would interested learn IMAA inspec tors have ever seen fit ground model because sloppy control surfaces could have caused flutter thing bear mind RC contest rules stipulate models being entered must have previously flown safe say no flutter experienced previous flights unlikely occur given contest Perhapsunless something undetected has worked loose control system over period time Question 4d two parts Most respond ents favor battery redundancy big models opposed fail-safe throttle servos question also asked readers opinions model weight above requirements would apply Responses latter part question say least diverse suggested weights varied low four five pounds high 30 lb respondent suggested low weight addressed fail-safe throttle said should requirement plane over about four five pounds ex pected fly 60 mph greater Several opposed fail-safe throttle concerned about cost such feature might just another thing go wrong orne system respondent opposed redundant bat teries felt automatic throttle cutoff low battery power ipuld useful could built radio having purchased radio bells-and-whistles features dont know cur rently feature built-in fail-safe throttle number years ago some radios did have capability would also neutralize control 132 Model Aviation 77 RO SOARING DIGEST CONTIOLINI ThU PROFILECOMBA 7RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & TIIDD Custom Diuvi Fish Ingredients detailed brochg,e50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29418 803-553-7169 A monthly publication covering International RO Soaring Scene SI 6lyearin USA US $20/yr Canada& Mexico US $24/yr elsewhere via airmail RCSD PO Box 269 Peterborough NH 03458 TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIOUES USED ON OUR PRO SERIES 3 SEE BELOW C S W WIDE BLADE EW EXTRA WIDE N NARROW 0 c$4$ e 0 L oP ~e 1lI 0C NIUM FAIR GROUNDS IMONIUM MARYLAND \ ~YORKROAD FAIRGROUNDS$ TIMONIUM RD lb F2N BALTIMOREw E s TAKE TIMONIUM RD EAST EXIT 16 OFF OF INTERSTATE 83 qE5 TO MD STATE FAIRGROUNDS DAN YARCHIN PO BOX 651 Owings Mills MD 21117 301-356-3170 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Rd. Towson MD 21204 301-825-8138 SPONSORED BY THE RADIO CONTROL MODELERS OF BALTIMORE surface servos As respondent pointed out neutralizing control surfaces trainertype model upon low battery power loss signal might save model However would unlikely prevent crash ad vanced model did possess inherent stability believe previous Safety columns concern ing big models Ive recommended use fail-safe devices close engine throttle recall describing incident giant model airborne battery pack fall Out model shortly after takeoff model inherently stable flew 10 miles before landing someones back yard fail-safe throttle could have prevented fly-away Although respondents opposed such device would recommend fail-safe throttle big model As redundant batteries favor too However batterycondition check performed before flight battery failure should minimized have much control over potential crash due radio interference Thats subject next question Question No 5 Radio Technique col umn January 1986 MA George Myers has discussed some length tests con ducted examine likelihood 31M third order intermodulation interference cer tain combinations frequencies used simultaneously Spacing out pilots along edge runway way minimize problem self-generated interference mean may creating own interference rather its coming outside source such pocket pager trans Available & L PAN AMERICAN INTL GJ HOBBIES SIG MEG R/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-Fl P60 SE-FI P60 RE-Fl P80 SE-Fl P80 R.E-FI P65 DUCTED FAN-R E -R P80 DUCTED FAN-R E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices sublect change notice mitter seems like least some respondents questionnaire must have read Georges columns since affirmative vote about 21 favor Mandatory pilot-spacing seems im portant large clubs Dave Abbe belongs such club Dave flys Pioneer Club Santa Clara CA has over 500 members reduce possibility self-generated 31M interference club field specified pilot locations assigned cer tain frequencies club used computer program determine frequencies likely combine cause 31M inter ference result worst offenders spaced farthest apart hope have future column Continued page 136 MICROMO TORI R/C MARINE ENGINES P21 SE-Fl P21 RE-Fl P45 RE-RI CO P65 RE-RI P80 RE-Rl P90 RE-RI R/C CAR-BUGGY-TETHER CAR P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICES! $8195 $81 95 $9995 $11095 $11795 $14395 ENGINES $7995 $7295 $6995 $11095 June1986 133 EASY TO NDCRAFTED KITS AT LOW PRICES VVII l F.A.JI OL III60 Length 53 inEngine 60Leng its include Pre-built fiberglass fuselage foam cores shaped strip ailerons complete hardware pack SEND CHECK OR MONEY ORDER TO,. VISA & MASTER CARD ACCEPTED ZON MODELS INC T-404 Kelly Ave Manchester NH 03103 603 627-9503 Safety/Preston Continued page 133 respondent opposed man dating pilot location club field nevertheless very concerned about radios interfering another enclosed let ter club sent AMA President John C Grigg expressed clubs con cern about ability radio manufacturers manufacture equipment will operate successfully frequency spacing tween channels reduced not-toodistant future Perhaps mandatory pilot-saving may way operate after 1991 Question No 6 Ten readers submitted other suggestions concerning safety RC flying fields Briefly summarized follow Get rid hotdoggers always edge wrong side flying safely Reduce interference having good clean primary-channel output Tx Good product review boards Everything magazines comes Out good have problems field Radio manufacturers should provide connec tors accommodate ESVs battery checks Increased punishment following already-set rules Get needle valve away spinning FAIRCHILDS MAGNIFICENT TANK KILLING A-b THUNDERBOLT H WARTHOG IN RELIABLE PROP VERSION SB WING SPAN FOR 60 ENGINE Plan No 104 $1400 postage paid wilkin USA N J resideols odd 6% soles tax RFM Design Research PO BOX 2393 VINCENTOWN NJ 08088 prop club have safety officers Experienced RCers pass knowledge newcomers Enforce rule keep spectators Out pits Ground models visual damage poor improper workmanship Maybe some video tapes scare guys couldnt care less about safety Have first aid kit possible telephone field emergencies Classify trainer models Primary Basic Advanced time read column will see May Safety column has addressed subject trainer models really arent trainers situation above respondents covered some length let ter havent already responded re quest May column thoughts classifying trainers Basic Advanced categories Im still interested hearing want thank responded reader questionnaire intend pass results AMA Safety Committee sug gest review Dave Abbes suggestions exception Question No 3 fail-safe throttle part Question No 5 ma jority readers appears agree Dave Have safe month Jo/in Preston 12235 Ti/den wood Dr Rock v/lie MD 20852 Plane Talk/Winter Continued page 26 curved fuselage lines beautify ugliness after cant see meticulously-done decorations mysterious panels lettering like military planes sort thing think Cut extract pilot am sure maybe neat rectangles inked portray locations airborne equipment Love mean-nothing arrows especially merely points jewel-like Saito inspired Chipley craft wonder Ye gods knows what doing flies great everyone can make statement note flight shot landing shows flies step Telemaster bonanza informational value itemjustifies break traditional format column data would make fine article magazine George Hen derson charter member Fallbrook RC Flyers California says has neither time talent lities produce article acceptable magazine wishes make system available other fliers Heres letter verbatim enjoyed very much too wish share Obviously impossible within column include detailed instructions provide full-size drawings authors feeling modelers level will able deduce combination photos drawings system works will able duplicate customize necessary parts Hender sons material normally would comprise fourpage article case would want contact him please write George Henderson 3662 Northcliff Dr Fallbrook CA 92028 Ive got 40-size Telemaster has real delight George tells us Au bralns Id make Telemaster hackers cannot better Ive currently made over 350 glider launcheseverything 2 x 4s Gentle Ladies Oly 650s Oly us overweight Para gon Mark Smiths Sensor 117 numerous unknown designs close full set parts friend can make installation Telemaster similar plane try design improve see fit 136 Model Aviation 4 EngIne 4U sheeted balsa machine cut balsa tail surfaces FREE FLIGHT SUPPLIES FAI Rubber Japanese Tissue Rubber Lube Nitrate Dope Front End Bearings Assemblies Crocket Hooks DT Fuse KSB Timers Cox Engines & Parts Kits Blue Ridge Peck Midway Micro-x others ox 5996 -Lake Worth FL 33461 CATALOG $100
Edition: Model Aviation - 1986/06
Page Numbers: 14, 16, 132, 133, 136
___John Preston___________________________ Safety Comes Fi RESPONSE Reader Questionnaire March 1986 issue 1 included questionnaire might improve safety RC flight operations suggestions made Dave Abbe California modeler letter wrote Bill Northrop publisher Model Builder magazine Bill published Daves letter Workbench column November 1985 issue MB Compared other solici tations readers response questions Ive previous columns has outstanding number letters As write February 28 1986 still trickling Since wrote March column Ive received both letter telephone call Dave Abbe has asked correct im pression may have received reading March column made seem letter being critical AMA opening paragraph stated Dave cited number reasons criticism aimed RC equipment manufacturers news media national organization words coined both Daves letter statement Bill Nor throp set record straight Dave wants known pro rather anti AMA point trying get across let ter MB safety flying field concern since AMA organiza tion seems logical effort improve RC flight safety should spearheaded AMA happen agree After get column mail intend sit down draft letter AMA Safe ty Committee summarizing results questionnaire soliciting views selection Daves suggestions respond ents clearly favored later column Meanwhile back results questionnaire Thirty-seven readers responded ques tionnaire respondent provided answer questions So add up yeas nays question will see cases total number votes cast fewer 37 respondents provided comments support answers Ill pass some first summary yes/no responses questions Analysis reader response questionnaire March 86 issue RC industry should read too 1 More uniform informative operating instructions 25-Yes 5-No 2 Should manufacturers standardize following components interchange ability 2a Servos 24Yes 7No 2b Batteries 24Yes 7No 2c Switch Harness 24Yes 7No 2d RC format 22Yes 7No 2e Other response discussed later 3 Should require mandatory battery checks before flight club flying fields 8Yes 24No 4 Should require mandatory checks of following before flight AMA-sanc tioned contests 4a Radio range 17Yes 6No 4b Tx & Rx batteries 16Yes 6No 4c Control surface flutter check 20Yes 7No 4d Should models over some specified weight state weight have battery redundancy fail-safe throttle Battery Redundancy 11Yes 5No Fail-safe throttle 7Yes 17No 5 Should AMA-chartered clubs specify pilot locations club flying field 13Yes 6No 6 Any other suggestions improve RC flying safety See discussion later Before discussing comments submitted some respondents let thank Fred Van Keuren Greenville MS Fred took initia tive poll 15 club members some thing thought wrote March safety column would have suggested Question No 1 hope some RC equipment manufacturers read column notice respondents 51 favor informa tive instructions comments some respondents provided seems may significant variation brand brand quality completeness operating instructions example reader voted no No 1 stated last radio Kraft accompanied very complete instructions Having owned recent Continued page 16 14 Model Aviation AMA Policy Statement results poll very teresting helpful However because very small number responses 37 out total approximately 80000 AMA members active some aspect RC flying Academy would need greater input act question naire-item reponses points addressed questionnaire tabulated results reply will however carefully considered along other factors appropriate AMA officers boards committees see further pursuit questions warranted C 1 p WE SAFETY CcMMlflE HAVE POUNr ThE FEREC AIRPLANE MATCH YOUR FLYING ABILITY 1 H/D500 Heavy Duty Metered Van Charger Heavy Duty version popular Metered Va Charger capable producing up 500 ma mllliampers current up 144 volts output variable stays constant throught charge period monitored accurately ter means can charge single 11 ma cell upto 12 SOOOma celIsI Perfect large D cell ni-cds 0 large glow plug batteries 12V starter batteries gall cells sealed lead acid bat teries wet cells etc Dependable solid state circuitry housed vinyl clad aluminum case years reliable service 34K60-ACE H/D 500 Charger kit 34K60C-ACE H/D 500 Charger asbld$3495 ORDERING INFO ACE products available dealer ho*ever need order direct send full amo unt plus $200 shipping han dung along catalog num j$ 116W 19 St PO Box 511MA Hlgginavllle MO 64037 call 816 584-7121 Complete catalog $200 I11tO little device sounds steady beep guide right plane Easily mounts smallest planes Use connector plug receiver same servo Also tells someone frequency solid state crystal oscillator Comes ready mount full structions included WT 1 oz DIM 1 x2 3/8 x IN USA CLUB DISCOUNTS AVAILABLE * ASK * SEND CHECK OR MONEY ORDER TO ELECTRONIC DESIGNS INC BOX Z 1925 GREENWOOD LK TPK HEWITT NEW JERSEY 07421 PHONE 201 728-1616 Plus $200 Shipping cont USA NJ Residents add 6% Sales Tax COD add $200 Allow 2 wks Shipping model Kraft radio myself would agree However another respondent voted Heck Yes said quite vividly remembered being beginner hobby haying kinds trouble learning about first radio engine plane radio major problem dont believe Dave Abbes suggestion better instructions aimed modeling products other radios However several respondents voiced displeas ure instructions accompanied engines remember engine pur chased several years ago accom panied operating instructions thing box besides engine itself sheet warnings told what what might happen ignored necessary item no help figuring out best prop what recom mended fuel etc Some respondents also stated some model kits have poor instructions reader John Hough Platte City MO included letter Construction Guide accompanied ARE kit Although guide does say model intended trainer certainly has appearance typical trainer may well appeal beginner construction guide consisted three pages two contained total four drawings showing exploded views portions model few captions last page illustrated suggested control surface throw aileron elevator rudder together picture transmitter showing stick should operate control surfaces Unfortunately illustrations Mode setup rarely used US RC fliers Johns com ment drawings sorely missing real instructions agree construc tion guide contained absolutely nothing con cerning radio installation opinion based reader response question No 1 room improve ment instructions accompanying some radios some engines kits Manu facturers take note Question No 2 As anticipated majority respondents over 31 favor stand ardizing components RC equipment assure interchangeability Several stated standardization related safety thought myself wrote March column However others pointed out lot modelers cannot make decent soldered connection situation could compromise safety flying have changed connectors say servos guess have mixed emotions standard izing components feel would bene ficial average modeler able use brand servo specific receiver having go through chore changing connecting plugs However said March column manufacturers may have sound technical reasons wanting standardize equipment Since respondents identified themselves manufac turers have no way knowing industry people feel about issue reason having unique connectors pointed out recent letter Dave Abbe incompatibility due different pulse polarity operating voltage other hand pulse polarity battery voltage could also standardizedI think Im Continued page 132 16 Model Aviation E II/D500 99 ONLY LEADER IN COMPETITION PROPELLERS NEW THP DESIGN /DIAPRICE 13 J12299 379 14479 15689 16989 NEW PITCH fliP 66 77 8 6778 677 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 6334568169 6I4566/7199 94566/77199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678989 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 54N279 8I 6778299 SERIES 400C 866777289 97289 Safety Preston Continued page 16 electronics expert comments would welcome readers knowledgeable subject Question No 3 Again anticipated respondents would opposed mandating battery checks club field walks life have found people generally op posed mandatory rules regulations Mandatory use automobile seat belts good example Typical comments sub mitted negative voters would nearly impossible enforce would policeman AMA clubs fly ing site anonymous response written notepaper Thai Hut Restaurant Wheaton MD stated No absolutely No Rules respondent submitted comment Question No 6 Any other sugges tions stated rules need rather much knowledge ex perienced RCers can pass newcomers hobby will determine safe operations March column stated belief mandatory battery checks club fields might difficultor impossible enforce other hand think Thai Hut Restau rants suggestion experience ex perts needs conveyed beginners en sure safety good larger RC clubs have formal semi-formal flighttraining programs new members beginners RC hobby Im going sug gest such clubs recommend beginners purchase ESV other battery-condition checking device use least periodically throughout days flying session As respondent opposed Question No 3 stated Anybody cares anything about radio aircraft will faithfully monitor condition bat teries throughout flying day hope can said us Question No 4 another multi-part question first three parts suggesting mandatory checks radio range Tx & Rx bat teries control surface flutter prior fly ing AMA-sanctioned contests Since again suggesting mandatory rules sur prised see majority respondents favor Could Yes answers came modelers generally participate contests would therefore affected adop tion such rules respondent recognized frequent Scale contestant voted No three mandatory checks contests stated seasoned contest flier isn likely arrive scene unsafe lrplane went state fSllow needs have airplane checked safety newcomer local flying field someone hasnt long ex perience would very likely welcome check some extent agree statements although did witness destruc tion Scale Racer Cassutt believe World Championships back 1974 developed severe flutter its control surfaces Whether could have prevented third party doing preflight check dont know believe control surface flutter-check preflight inspection requirements IMAA-sanctioned events big birds would interested learn IMAA inspec tors have ever seen fit ground model because sloppy control surfaces could have caused flutter thing bear mind RC contest rules stipulate models being entered must have previously flown safe say no flutter experienced previous flights unlikely occur given contest Perhapsunless something undetected has worked loose control system over period time Question 4d two parts Most respond ents favor battery redundancy big models opposed fail-safe throttle servos question also asked readers opinions model weight above requirements would apply Responses latter part question say least diverse suggested weights varied low four five pounds high 30 lb respondent suggested low weight addressed fail-safe throttle said should requirement plane over about four five pounds ex pected fly 60 mph greater Several opposed fail-safe throttle concerned about cost such feature might just another thing go wrong orne system respondent opposed redundant bat teries felt automatic throttle cutoff low battery power ipuld useful could built radio having purchased radio bells-and-whistles features dont know cur rently feature built-in fail-safe throttle number years ago some radios did have capability would also neutralize control 132 Model Aviation 77 RO SOARING DIGEST CONTIOLINI ThU PROFILECOMBA 7RA T WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & TIIDD Custom Diuvi Fish Ingredients detailed brochg,e50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road Charleston Hgts. SC 29418 803-553-7169 A monthly publication covering International RO Soaring Scene SI 6lyearin USA US $20/yr Canada& Mexico US $24/yr elsewhere via airmail RCSD PO Box 269 Peterborough NH 03458 TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIOUES USED ON OUR PRO SERIES 3 SEE BELOW C S W WIDE BLADE EW EXTRA WIDE N NARROW 0 c$4$ e 0 L oP ~e 1lI 0C NIUM FAIR GROUNDS IMONIUM MARYLAND \ ~YORKROAD FAIRGROUNDS$ TIMONIUM RD lb F2N BALTIMOREw E s TAKE TIMONIUM RD EAST EXIT 16 OFF OF INTERSTATE 83 qE5 TO MD STATE FAIRGROUNDS DAN YARCHIN PO BOX 651 Owings Mills MD 21117 301-356-3170 FOR INFORMATION CONTACT MARC DIRECTORS JOHN KIRK 912 Cromwell Bridge Rd. Towson MD 21204 301-825-8138 SPONSORED BY THE RADIO CONTROL MODELERS OF BALTIMORE surface servos As respondent pointed out neutralizing control surfaces trainertype model upon low battery power loss signal might save model However would unlikely prevent crash ad vanced model did possess inherent stability believe previous Safety columns concern ing big models Ive recommended use fail-safe devices close engine throttle recall describing incident giant model airborne battery pack fall Out model shortly after takeoff model inherently stable flew 10 miles before landing someones back yard fail-safe throttle could have prevented fly-away Although respondents opposed such device would recommend fail-safe throttle big model As redundant batteries favor too However batterycondition check performed before flight battery failure should minimized have much control over potential crash due radio interference Thats subject next question Question No 5 Radio Technique col umn January 1986 MA George Myers has discussed some length tests con ducted examine likelihood 31M third order intermodulation interference cer tain combinations frequencies used simultaneously Spacing out pilots along edge runway way minimize problem self-generated interference mean may creating own interference rather its coming outside source such pocket pager trans Available & L PAN AMERICAN INTL GJ HOBBIES SIG MEG R/C AEREO ENGINES P21 SE-FI P21 RE-FI P40 SE-FI P40 PYLON RE-RI P45 SE-Fl P60 SE-FI P60 RE-Fl P80 SE-Fl P80 R.E-FI P65 DUCTED FAN-R E -R P80 DUCTED FAN-R E -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 Imported CONDOR TRADING PO Box 3479 Mission Viejo CA 92690-1479 Dealer & Distributor Inquiries invited 714-582-3087 Prices sublect change notice mitter seems like least some respondents questionnaire must have read Georges columns since affirmative vote about 21 favor Mandatory pilot-spacing seems im portant large clubs Dave Abbe belongs such club Dave flys Pioneer Club Santa Clara CA has over 500 members reduce possibility self-generated 31M interference club field specified pilot locations assigned cer tain frequencies club used computer program determine frequencies likely combine cause 31M inter ference result worst offenders spaced farthest apart hope have future column Continued page 136 MICROMO TORI R/C MARINE ENGINES P21 SE-Fl P21 RE-Fl P45 RE-RI CO P65 RE-RI P80 RE-Rl P90 RE-RI R/C CAR-BUGGY-TETHER CAR P21 CAR-DELTA REFI P21 CAR REAR OR SE-FI P21 BUGGY REAR OR SE-FI P60 TETHER CAR-RERI NEW PRICES! $8195 $81 95 $9995 $11095 $11795 $14395 ENGINES $7995 $7295 $6995 $11095 June1986 133 EASY TO NDCRAFTED KITS AT LOW PRICES VVII l F.A.JI OL III60 Length 53 inEngine 60Leng its include Pre-built fiberglass fuselage foam cores shaped strip ailerons complete hardware pack SEND CHECK OR MONEY ORDER TO,. VISA & MASTER CARD ACCEPTED ZON MODELS INC T-404 Kelly Ave Manchester NH 03103 603 627-9503 Safety/Preston Continued page 133 respondent opposed man dating pilot location club field nevertheless very concerned about radios interfering another enclosed let ter club sent AMA President John C Grigg expressed clubs con cern about ability radio manufacturers manufacture equipment will operate successfully frequency spacing tween channels reduced not-toodistant future Perhaps mandatory pilot-saving may way operate after 1991 Question No 6 Ten readers submitted other suggestions concerning safety RC flying fields Briefly summarized follow Get rid hotdoggers always edge wrong side flying safely Reduce interference having good clean primary-channel output Tx Good product review boards Everything magazines comes Out good have problems field Radio manufacturers should provide connec tors accommodate ESVs battery checks Increased punishment following already-set rules Get needle valve away spinning FAIRCHILDS MAGNIFICENT TANK KILLING A-b THUNDERBOLT H WARTHOG IN RELIABLE PROP VERSION SB WING SPAN FOR 60 ENGINE Plan No 104 $1400 postage paid wilkin USA N J resideols odd 6% soles tax RFM Design Research PO BOX 2393 VINCENTOWN NJ 08088 prop club have safety officers Experienced RCers pass knowledge newcomers Enforce rule keep spectators Out pits Ground models visual damage poor improper workmanship Maybe some video tapes scare guys couldnt care less about safety Have first aid kit possible telephone field emergencies Classify trainer models Primary Basic Advanced time read column will see May Safety column has addressed subject trainer models really arent trainers situation above respondents covered some length let ter havent already responded re quest May column thoughts classifying trainers Basic Advanced categories Im still interested hearing want thank responded reader questionnaire intend pass results AMA Safety Committee sug gest review Dave Abbes suggestions exception Question No 3 fail-safe throttle part Question No 5 ma jority readers appears agree Dave Have safe month Jo/in Preston 12235 Ti/den wood Dr Rock v/lie MD 20852 Plane Talk/Winter Continued page 26 curved fuselage lines beautify ugliness after cant see meticulously-done decorations mysterious panels lettering like military planes sort thing think Cut extract pilot am sure maybe neat rectangles inked portray locations airborne equipment Love mean-nothing arrows especially merely points jewel-like Saito inspired Chipley craft wonder Ye gods knows what doing flies great everyone can make statement note flight shot landing shows flies step Telemaster bonanza informational value itemjustifies break traditional format column data would make fine article magazine George Hen derson charter member Fallbrook RC Flyers California says has neither time talent lities produce article acceptable magazine wishes make system available other fliers Heres letter verbatim enjoyed very much too wish share Obviously impossible within column include detailed instructions provide full-size drawings authors feeling modelers level will able deduce combination photos drawings system works will able duplicate customize necessary parts Hender sons material normally would comprise fourpage article case would want contact him please write George Henderson 3662 Northcliff Dr Fallbrook CA 92028 Ive got 40-size Telemaster has real delight George tells us Au bralns Id make Telemaster hackers cannot better Ive currently made over 350 glider launcheseverything 2 x 4s Gentle Ladies Oly 650s Oly us overweight Para gon Mark Smiths Sensor 117 numerous unknown designs close full set parts friend can make installation Telemaster similar plane try design improve see fit 136 Model Aviation 4 EngIne 4U sheeted balsa machine cut balsa tail surfaces FREE FLIGHT SUPPLIES FAI Rubber Japanese Tissue Rubber Lube Nitrate Dope Front End Bearings Assemblies Crocket Hooks DT Fuse KSB Timers Cox Engines & Parts Kits Blue Ridge Peck Midway Micro-x others ox 5996 -Lake Worth FL 33461 CATALOG $100