COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation
Edition: Model Aviation - 1983/07
Page Numbers: 117, 118, 120, 121, 122, 123, 124
COM PETITIjA~ NE WSLETTE ACADEMY OF MODEL AERONAUTICS ClAM Meeting Report Several significant decisions made April 11 1983 ClAM meeting Some items general interest others have specific effects three upcoming World Championships 1983 General Interest new edition FAI Sporting Code rule book will published effectivity January 1 1984 will four-year freeze effectivity subsequent rules changes Except rules changes related safety matters rules changes made December 1983 ClAM meeting will go new Code World Championship competition sub stitution team members will allow ed up time team registered FAI licenses checked time models processedwhichever occurs first Japan will host 1984 Indoor World Championships 1985 RC Aerobatics World Champion ships will probably hosted Nether lands World Championship Procedures 1983 RCSoaring World Champion ship% weak link towline will used organizer will test towlines breaking strength Winches meet organizers rule defined December ClAM minutes Competition Newsletter March 1983 single electric mo tor 140mm max diameter 215mm body length driving winch drum having minimum width between flanges 75mm powered single lead-acid battery having combined length width height di mensions totaling 750mminternal combus tion engines prohibited may used No other organizer definitions restrictions will applied noise tests RC Aerobatics World Championships will administered such flight score model fails flight-circle before-takeoff noise check will count model subsequent ly fails platform noise check time taken perform flight-circle noise check will count against fliers flight time Free Flight World Championships no motorized retrieval vehicles will permit ted Also models using fuse-type dethermal izers must have use snuffer tubein fact because several recent severe range fires Australia fuse-type devices may banned government Competitors advised might good idea switch clockwork electronic/digital-type timer before getting World Champs Use 27 MHz walkie-talkies will permit ted general news items appear page 120 1810 SAMUEL MORSE DRIVE * ** * * ** * ****** ** ** ******* ** 83 Nats News Nuts Week July 21i-3 1 ** ** * *** * * ***** ****** Attention Club Otticersi Dont duplicate Nats entry form Club officers others cautioned copy entry blank Nats entry form give club members friends years past has cause much grief Nats contestants have used such copies reason caution request fact Nats entry form simply loaded information pertaining times/places processing various events other vital information contestants about events pilots meetings procedures etc material same page entry blankwhich typically part form duplicated handed other modelers Get Nats Entry Form Nats entry forms now available mailed automatically entrants 1982 Nats 1982 Nats entrant have yet received 1983 en try formtell us about Post Office has known lose things mail course AMA HQ perfect never forgets mail out District AMA officers have supply entry forms hobby shops cant get easily through sources write AMA HQ request Please en close stamped self-addressed envelope letter-sizewith request deadline advance entry Wednes day July 1 1983 postmark Nats entries received after date will subject late entry fee Open age contestants $15 plus $5 per event Late entries can processed AMA Nats HQ 83 Nuts Booster Kit Get em theyre hot Knowing modelers will want some collectable memorabilia first-ever East Coast Nats AMA HQ has prepared very nice Nats Booster Kit contains Nats pin First Annual AMA Convention pin 83 Nats patch First Convention patch Nats program book Springfield Nats bumper sticker reduced-size replica ofRESTON VA 22090 ficial 83 Nats publicity poster Its $13 value $10 postpaid US items kit available separately following prices $3 pins $2 patches $1 program book bumper sticker poster Order items AMA Supply Service Section AMA HQ 1983 Hats Sponsors Nats sponsors make possible have ex cellent trophies winning contestants contributions hard-earned cash remind us appreciate businessand whole heartedly support great hobby Some money sponsors also goes wards defraying expense operating worlds largest model airplane contest sponsors thanks following list sponsors represents have signed up April 20 1983 Ace RC Inc Airtronics Phase Art Bavarian Precision Products IHB Enginesl Byron Originals Carolina-Taffinder Coverite Custom Model Products Bob Dively Du-Bro Products Electronic Model Systems Enys Model Engines Addis Elmore Fox Manufacturing Co Carl Goldberg Models Gorham Model Products Grish Brothers Paul K Guillow K&B Manufacturing Kraft Systems Dick McCoy McDaniel RC Service Mid-Am Distributors Mid-Am X-Cell Team Model Aeronautic Publications Northeast Aerodynamics Pacer Technology & Resources Pactra Peck-Polymers Progress/Rev-Up Manufacturing Co Ramco Rocket City RC Specialties Sig Manufacturing Co Top Flite Models Westport International Williams Brothers World Engines Another Nats item appears page 120 July 1983 117 Solving Model Engine Noise Problem Ed Izzo besides being AMA District VP chairman AMA Noise Committee recent letter qualifiers RC Aero batics team selection program passed some information reduce noise level propulsion system World-class RC Pattern model Since formation will also value AMA Pat tern contestantsand Power-modelers generalwed like give some publicity information has gathered AMA Noise Committee Background Information Problem model-engine noise problem par ticular interest RC fliers compet ing FAI RC Aerobatics program since FAI has set down some rigid guidelines amount noise Pattern model may generate being disqualified rule going enforced World Championships year FAI rule states maximum permissible noise level Oass F3A model 105dB measured ground model engine running full power measuring-device microphone oriented 90 de grees models flight path distance meter engine cylinder head What Problem Ed stated conversations some team-program finalists has become evident lack knowledge about what to model order com ply noise rule points out really three areas noisecontrol efforts can carried out engine engine exhaust propeller Some Suggestions some suggestions what can done three problem areas 1 Engine small add-on intake muffler helps decrease engine noise Enclosing engine cowl will also keep purely mechan ical noises such intake noise ra diating directions will reduce noise level directions 2 Exhaust Use tuned pipe has tegral muffler after-chamber add-on resonator notes common flatended pipe having pigtail outlet very noisy 3 Propeller prop responsible large portion propulsion system noise appreciate fact listen variety commuter-airline-size turbo-prop airplanes fly over Some incredibly noisyand noise coming almost 100% prop since turbine engine ex haust very quiet biggest culprit con tributing noise high tip speed prop bladesand directly related prop diameter engine rpm chart publish ed item copy prepar ed Noise Committee shows relationship between prop diameter rpm associated tip speed noise level Izzo notes chart approximation states good place start 100 90 Co w w 0 -J uJ w -J 0 z 0 Co 80 70 50 4030 20 Must LEFT line 101021O5dBA 0 Tip Speed in/sec x RPM 60 20-2r4 18 16 14 0 0 0 x 0 12 10 8 6 4 2 0 / / /1 / / /1 7 / / U 11 / / 13 15 17 19 7 I#4II 21 II -4 Izzo recommends prop tip speed kept below 6500 in/sec order keep overall noise level below 102-105 dBA fliers have thought using smaller-diameter 10-in three-bladed pro p would trick Ed notes such prop run 13000 rpm tip speed will 7000 in/sec very marginal General Comments Japanese fliers attacking prob lem using long-stroke lower-revving en/ z gines higher-pitch props 9 13 pitch Looking photos top Pat tern fliers appearing Japanese Radio Technique magazine indicates fliers turning new 05 75 Enya 90 four-strokes Pattern mod els Since direct route keeping prop tip speed down go lower engine rpms modelers apprehensive about Continued page 120 -7 118 Model Aviation 0 1 2 3 4 5 6 7 8 9 10 TIP SPEED inches/sec x 1000 SOUND LEVELS FOR 2-BLADED MODEL AIRPLANE PROPELLERS Noise Continued inevitable result approachless thrust corresponding decrease model performance noted techincal problem can alleviated using props blade area fly ing lighter models AMA Noise Committee would wel come information modelers may experimenting areas Hats Symposia Workshops So far six companies have signed up present either symposium workshop 1983 Nats Ace RC InC Coverite North east Aerodynamics Pacer Technology mak ers ZAP products Ramco Top Flite Models others have yet made de cisions may find presenta tions interest you check bulletin boards AMA Nats HQ Quality Inn Hotel Chicopee MA US CL Combat Team Finals 1984 Combat Team Selection Com mittee has just announced team trials Finals will held Nashville TN September 16-18 Monday September 19 emergency rain date pre-contest meeting will held Fri day September 16 first three four rounds will flown Saturday re maining rounds will flown Sunday Deadline advance entry July 30 198a Entry fee $50 Late entry fee deadline September 10 1983 $75 contestants must have current AMA li censes $10 FAt stamp attached entries must mailed AMA HO Attention Micheline Madison No entries will accepted contest no entry form simply give name address AMA number say want enter Combat team trials include check money order entry free contest organizer Mack Henry Competition Directory CONTESY COORDINATORSFP Pa Enghsh 822 Broadway Vrncenne, IN 47591 Bererce WlIarrrs 347 Sourhwick Rd Wesrfreld MA 01085 VII aeentsentrC district except Michaan Ii R Sobrrflo 8726 88r1r St Woodhaven Queens NY 11421 Oregg Seyoe 3625 East dna Terrace Cudahy WI 53110 RC Ernest Nosodem 407 SAdlow Sr Lockoort NY 14094 Mchigan RC el Fuor 28 cernosood Dr Cornmack NY 11725 RC Wayne Yeager 38235 Castie Ronralus Ml 48174 Ill Ken Reber 427 BIn Dr Nacareth PA 18064 lEastI CL & FF Paul Smdh 11112 D Dr Stenlng Hats Ml 48077 M Weisenbach 4568 W 146th Cleveland OH 44135 West VIII Randy Randolph P0 Bc 271048 Dallas TX 75227 IV Warren Sanders J 9735 52nd Avenue College Park MD IX Bill Breda UNIVAC Bldg. 7100 W Center Rd Nc 420 20741Omaha NE 68106 RC Ed Bycrlec 200 Commander Cove Stafford VA22554RC George Hanter 6962 5 Lamar St Littleton CD 80123 V RC HR Norckauer 12016 Queens P1 Huntsville AL35803 X James Cavebran 27818 Ormond Ave Hayvearo CA 94544 FF Wallace Johnson 4112 White Acres Rd Montgomery ALNorth 36106Harry Aporan 27704 Saddle Rd Rollint Hill CA 90274 CL Marilyn Duane 862 Colonral Cs West Jacksonville PL Southl 32211Frank Games 2241 Noah Street Honolulu HI 96816 HI VI RC les Dray 201 Hulman Salem Rd Terre Haute meetti IN 47803Xl Tom Cope 23262 SE 57th Sc R 3 Issaquah WA 98027 RC Soarng Helen Olsen 820 Old Bonhamme unIversity City RC James McCarty 18958 Marine Veve Dr Seattle WA MO 63132 98166 CL WR Bodzroctr Jr 235 W Glade PalatIne IL 60067 RC Pylon & Soaring RC Pattern other RC 'RC excernt Soaningl eald Face Below Indicates Chairman contest Board FREE FLIGHT CONTEST BOARDVI Chris Magauno 8576 Ginger St John MO 63114 Henry Struck RFD2 Hambart Old Lyme CT 06371VII Bill Shailor 13596 Montrose DetroIt MI 48227 IIBradley Bane 60 Lake Ave Lyndonville NY 14098VIII Mark Valenius 1627 Overland Pass Sugarland TX 77478 IllRudy Kluiber 2021 Lakeland Ave Lakemooc OH 44107IX Jerald Marehy 2432 AstrOn Colorado Springs CO 80906 IVJoe Boyle Jr 219 Shenandoah Rd. Hampton \IA 23361X Joe Norcross P0 Boa 65 Hanford CA 93232 VBonny Jenkins 3112 E Ralnes Rd Memphrs TN 38118Xl KevIn Collins 2320 Sahalee Dr B Redmond WA98052 RADIO CONTROL CONTEST BOARDV J Davis Jr 1813 5 Lakeshore eirmingham AL 35216 Lance Murphy 29 Hightop Cit. B Hamden CT 06514VI Paul Proefrock 3989 Weher Way Lexington KY 40514 II Joe Friend 41 Carriege Hill Dr Colts Neck NJ 07722 VII Peter Waters 7420 7Mire Rd Northville Ml 48167 Ill Ron Hesselbroers 6320 Blueberry Hill Cs Cincinneti OH VIII Win Thomas 331 SE Rstckwood Bartlesaille OK 74003 45211IX Lore Tregelas 3003 5 Everett WIchIta KS 87217 IV W Abernethh 9205 Carendon 3 upper Marlboro MDX Bill Norrhinp Jr. 621 W 19th St Costa Mesa CA 92627 20870Xl Charles Davenport 14415 SE 266th Sr. Kent WA 98031 CONTROL LINE CONTEST BOARDVI Bob Burcf7O32NSiOaaChicegO 1L60646 George HIggIns P08ov482 North Pembroke MA 02358VII James Srnson 4941 WIsconsIn N New Hope MN 5542t II 81ll Boss 7706 269tI Sr Nev Hyde Park NY 11040 VIII Win Lee 3522 Tamarisk Lane Missouri City TX 77459 III Luird JacksOn 1025 tnlnut Sr Philadelphia PA 19107 IX Mrchae Tallman 3014 Bechange Wichita KS 67217 IV Ron McNally 6118 Barda Ace Springfield VA 22152 X ViC Darner P0 Box 573 LIvermore CA 94550 V Dave Hemstraught P0 Boy 171 Monces Corner SC 29461 Xl John Tnomoson 1411 Bryant Ave. Cottage Grove OR 97424 SCALE CONTEST BOARD VI John Guenther RR 1Box 715 Borden IN 47106 freSmeef 52 Lanihalm Dr. Neshue NH03060 VII Claude McCuilaaghRR 1 8ox487 Mantazisma IA 50171 II Rohert Clameets 95 Shareway Dr Rochester NY 14612 VIII Buddy Irwin 922 SundOwn Ln. Dm010 TX 75115 III Edward Wisuar 1521 Summit St McKaesport PA 15130 IX Dean Copefand 7817 Seward St Omaha NB 66114 IV Bob Karlgaon 2643 Marsh Rd Wilmington 08 19810 X Bill Stroman 12218 Dane St. Norwalk CA 90650 V David Piart 6940 NW 15th Pt Lauderdale FL 33313 XI Earle Moorhead 275 5 View Place 5 Salem OR 97302 INDOOR CONTEST BOARD I Ray Harlan 15 Happy Hollow Rd itayland MA 01778 VI Chris Matnuna 6576 Ginger St John MO 63114 II Merrick Andrewa 100 River Rd A-il Bogota NJ 07603 VII Richard Daig 6 Canary Hill Dr Pontiac Ml 48055 Ill Walter P Van Gorder 5669 Victory View Ln Cincinnati VIII Ralph 6udI Tenny Box 548 Richardeon TX 75080 OH 45238IX Stan Chilton 300S Main Wichita KS 67202 IV Don Srull 941 Kimbermicke Rd McLean VA 22102X Clarence Masher 3860 Ecocrsee Ave San Diego CA 92117 V JoCn Martin 3227 Darmrrt St Coconut Grove Mami FL XI Dave Hagen 19957 S Red Lana Rd Oregon City OR 97045 33133 CONTEST BOARD COORDINATOR Don Lindley 420 Tupelo Neperville IL 60540 615/833-0000 persons willing volunteer officials should call Paul Hartlaub 51 3/922-0554 Submitting FAI Rules Proposals Modelers wishing submit proposals FAI international competition rules re minded current AMA procedures handling proposals require sent AMA HO first address ed attention Micheline Madin must received August 2 1983 AMAs internal procedure hand ling FAt rules proposals given July 1982 edition Competition Newslet ter no official AMA FAt form submitting such proposals however pro posal submission must refer appropri ate sections paragraphs FAI Sport ing Code rule book using numbering code found Code must also state briefly reason proposed change sample typical imaginary rules proposals given below Future World Champs Looking forward 1984 1985 status six aeromodeling World Cham pionships due held years follows 1984 World Championships Control Line USA Scale France Indoor Japan 1985 World Championships Free Flight No offers host RC Aerobatics Netherlands pending final approval RC Soaring Australia New World Championships FAt presently taking first steps toward sanctioning World Championships RC Helicopters RC Pylon Racing will report later developments areas occur general news items page 124 120 Model Aviation uce ewe nfl acesnreAL xc rca isIlS ewuai leer laeflfl Iainacn wncaa II Sentixe Eeeetine lane tricca delete ne flel lapel aird cab atitate thce Ilevel lapel ax 3udgae clarke en ceexndecu ace employed tve laps betneen maneauveen dxee sxt give nba jadga eisa xx eanaidme tie macking mark bin Clight care aexeedlegly macnicer 4 pace 4gli Lcd cC mae Cab pace Delete 1e0 elretita ed 10 kilx meteeer mabatltata 200 eieeulta cad 2e kile metaee macace lange eat greatar 8IITIIislty isv rite cacceet mad Chin slll enanra larsen difCrasee time henseen leading nampetitern abc ic ahxrser ran aCtee UnSet itbis Ceactixca necond pee anathee Inactine n,a pacleree ern eeae ta cxi artire dn cc tien wA usia bl RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Cross-Proposals biennial competition rules-changing process full swing important requirements process fulfilled proposals subsequent cross-proposals published Competition News letter complete Contest Board Procedures dealing rule-making process published June 1982 edition Competition Newsletterwhich two editions 1982 bound mailed separately Model vi at/on original rules proposals submit ted current cycle published October December 1982 January 1983 editions Competition Newslet ter results Contest Boards Initial Vote published March 1983 Competition Newsletter What Happens Next Procedure next step rule-making proce dure Contest Boards take terim Vote cross-proposals deadline June 6 1983 results Interim Vote will published hereprobably August 1983 issue Note Because cross-proposals being published very late date normal deadline membership input Contest Board members has extended May 1 June 6 postmark deadline want input useful Contest Board prompt response necessary make June 6 deadline no time waste because Final Vote ballot scheduled mailed Contest Board members July 15 1983 final step process Contest Boards Final Votewhich will determine new rules implemented 1984 deadline vote September 1 1983 results Final Vote will also pub lished hereprobably December issue Modelers have followed whole pro cess will know substantially what new rules will almost always some minor revisions wording worked out Contest Board chairmen last minute new rule books will published mailed AMA members early 1984 goes well final editing publishing tasks rule books scheduled go out January however seems inevitable delays process rate new rule book will distributed early 1984 Modeler Participation Desired rule-making process keyed voting various Contest Boardsand supposed respond opinions de sires modelers various AMA dis tricts district Contest Board members can fulfill requirement get inputs modelers districts Therefore modelers have interest rules proposals cross-propo sals urged make thoughts known district Contest Board members helpful CB members get modeler inputs writing however contact person phone would also useful order have good rules vital get opinions individual modelers Cross-Proposals cross-proposals received AMA HQ voted Before being sent dividual Contest Board members crossproposals first screened Contest Board Chairmen Theyve got assure cross-proposal cross basic proposal defeated Initial Vote cross actually new proposal trying sneak through crossproposal addition requirement cross-proposal being properly submitted sig natures three current Open-class AMA members least must Contest Director must verified valid cross-pro posals submitted current rulemaking cycle Free Flight Cross Proposal FF-84-4AChange Rocket Power event Supplemental status proposes change current Rocket Power event Supple mental status rather eliminate en tirely would retained rule book Chris Matsuno St John MO feels elimination Rocket Power seems justified due lack availability fuel en gines retention rules jn rule book Supplemental event would allow CDs include some con tests retention rules would provide suggested standard possible futu redevelopment alternate engines and/or fuel Should latter occur existing models could still flown event could upgraded official status again future date p 12 par 13 General Cross-Proposals Gen-84-2ACarrier/Racing Specify stop watch accuracy proposes modify Gen-84-2 information pertaining stopwatch accuracy relates CL events will proper sections rule book CL rules area Specifically would add sections 25 CL Racing Uni fied Rules 30 CL Navy Carrier statement now found par 112 Con trol Line speed events stopwatches shall have graduations less one-tenth sec ond Ron McNally Springfield VA Chairman CL Contest Board states CL events have traditionally relied par 112 CL events except Car rier Racing have rules stopwatch requirements can obtained di recti y Gen-84-4AAlternate CD must present primary CD compete contest proposes amend basic proposal another Contest Director must available charge contest case primary CD competes event would accomplished replacing pre sent wording 1982-83 AMA rule book following 11 Competition Di rectors director contest may com pete classes contests record trials except AAA AAAA AMA-sponsored National International Contest provided another Contest Director avail able charge primary Con test Director competing also must responsible decisions regarding related such competition during after such competition cases primary duty Contest Director con test officials proper execution contest no activity shall permitted interfere duty Ronald L McNally Springfield VA states Contest Director should cannot charge contest competing contest should have make decisions allowed make decisions related performance competing p 5 par 111 Gen-84-4BAlIow CD compete AAA contests second CD available pro poses modify par 111 1982-83 AMA rules book adding following prohibited com peting own AAAA AMA Nationals International contests Gary Frost Ballwin MO states basic purpose cross-proposal restrict CDs provide contest coverage alternate CD available requirement fulfilled notes astute Event Directors keep problems first level provide conti nuity events pattern interrupted change Contest Direc tor p5 par 11 1 Scale Cross-Proposal SC-84-1AMore points finish color markings Sport Sailplane pro poses change Static Scoring section par 53C 198283 AMA rule book Finish Color Markings section has maximum point value 15 points also proposes delete language dealing Original Design Model its entirety Kenneth E Ruhf Petersburg VA believes current rules basically penalize Sport Sailplane contestants score ing designer model give enough credit color scheme markings finish p 84 par 53C6 Control Line Cross-Proposals CL-84-2AAerobatics Redefine Stat-ti End-points Inside Square Loop Tri angular Loop proposes redefine starting points Inside Square Loop Triangular Loop traditional first inside corner rather rule book now showsat entry portion draw ing addition written description Triangular Loop would changed read Correct triangular arting base turn Arlie Preszler Lodi CA speaking Precision Aerobatic Advisory Com mittee states notes Start/End points present rule book drawings probably mistake cross-proRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 121 Attention Contest Board members Any Contest Board member may have al ready submitted Interim Vote ballot receives modeler input asa result deadline-extension causes him de sire change vote may Phone change vote AMA HQ Competi tion Dept Attention Micheline Madison RULES PROPOSALS posal deletes necessity redraw ma neuver diagrams proposed CL-84-2 p 32 items 311 37 311 39 CL-84-2BAerobatics Add additional Training Guide maneuver diagrams existing maneuver drawings AMA rule book James Renkar Justice IL pro poses add series maneuver diagrams drawn pilots viewpoint AMA rule book would addition present maneuver diagrams notes existing maneuver drawings very confus ing beginning Precision Aerobatics flier pp 3 1-34 maneuver diagrams CL-84--6ACarrier Remove Builder Model rule contests below AAAA-leveL proposes change par 3014 1982-83 AMA rule book read follows 14 Builder model builder model rule does apply CL Navy Carrier events AAA lesser-rated MA-sanctioned contest David Rolley Bennett CO states crossproposal adopted will allow newcomers try event easily will allow present competitors dispose older competition equipment p 29 par 301 4 CL-84-7ACarrierDeletemaximum wingspan requirements Profile pro poses delete restrictions model wingspan par 3033 AMA rule book David Rolley states present rules restrict use currently-available kits fraction available safety would affected because 4lb maximum weight limit models present pull-test requirement p 28 par 3033 CL84-7BCarrier Change maximum-al lowable wingspan Profile 96 pro poses change wingspan restriction par 303 maximum 96 Profile models David Rolley makes same state ments CL-84-7A CL-848ACarrier Delete 60-deg nosehigh rule substitute max low-speed time 210 sec proposes delete pre sent 60-degree-nose-high rule applies low speed its place substitute maximum low-speed time 210 sec David G Copeman Brown Bear WI states restricting low speed will have effect turning Carrier Speed event will encourage use expensive special en gines will discourage new contestants Restricting low speed 150 sec basic proposal slow enough speed encourage real attempts low-speed flying hence proposal 210 sec p 29 par 301 12 301 1223 CL-84-8BCarrier Remove 60-degree rule proposes delete present 60degree-nose-high rule relating low speed AMA rule book David Rolley states 60-degree rule impossible judge uniformly across country calls subjective judgement p 29 par 301 1223 CL-84-22BSlow Rat 10%-nitro fuel sup plied contest organizer proposes modify existing Slow Rat rules adding new paragraph 2728 AMA rule book new paragraph would read 28 fuel event shall supplied contest organizers shall contain no 10% nitromethane Victor Garner Livermore CA states basic pro posal CL-84-22 would obsolete 90% entries contests has attended 1982 RULES PROPOSALS RULES PROPOSALSRULES PROPOSALS cause proposed changes airplanes engines p 26 par 272 CL-84-22CSlow Rat qualifications original proposal proposes basically same changes restrictions CL-8422 following changes Only singlebypass-port engines allowedno Schnuerles PDP also no engines ABC AAC type allowed no variable-area carburetors shall allowedeach engine shall equipped venturi spraybar meeting fol lowing restrictions spraybar assembly will located precisely through center line venturi bore shall have circular cross section diameter less 0155 portion throat venturi venturi shall have inside bore diameter 028 above spraybar center line order allow diameter checks insertion drill rod Frank E Williams Houston TX proposed CL-84-22 still wants de-tune Slow Rat fliers will physically capable flying imposes few addi tional restrictions engine carb original proposal goal encour age slower speeds through keeping engine horsepower down p 26 sec 27 CL-84-22DSlow Rat Allow engines single bypass ports proposes modify basic proposal CL-84-22 dis allow use engines having Schnuerle Perry Directional Porting PDP Terry Rimert Baldwin FL states PDP could mis taken Schnuerle porting upon inspection PDP design carried too far Since original proposal allowed PDP feels judgement calls part contest officials could eliminated also outlaw ing PDP too notes could also re sult fliers being able use less expensive engine parts p 26 sec 27 CL-84-22ESlow Rat Separate CL-84-22 seven separate parts Final Vote proposes separate proposal CL-84-22 following seven parts 1 profile model exposed controls 2 outboard fuel tank 3 no variable-area carbs 4 10%-nitro fuel sup plied contest officials 5 engine restric tions 6 three-flier races 7 018 multi-strand lines 35-lb pull-test Ron McNally Springfield VA CLCB chairman states basic proposal unit too ex treme dealing part separately best chance obtaining acceptable set changes will possible CL-84-22FSlow Rat Modify tank loca tion 10%-nitro fuel engine restrictions proposes modify basic proposal CL-84-22 areas mentioned response comments received members CLCB various competitors Ron McNally CLCB chairman has collected following proposed changes basic pro posal 1 entire fuel tank shall out board center line engine crank shaft forward wing completely exposed 2 fuel shall supplied contest organizers shall contain 10% nitromethane less 20% lubricant 3 engines shall limited front-intake configura tion addition present Slow Rat engine restrictions replace other engine restrictions CL-84-22 cluding no variable carb restriction p 26 sec 27 RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS CL-84-22GSlow Rat Delete CL84-22 except tank location variable carb 10%-nitro fuel front-intake-only engine restrictions proposes leave Slow Rat rules alone except areas men tioned Ron McNally CLCB chairman states no seems want build completely-exposed control systems ad dition engine restrictions included original proposal would create another legalengine nightmare also use stranded lines reduced pull-test seems unwise least until determined what totalpassing Slow Rat rules-change package con tains p 26 sec 27 CL-84--22HSlow Rat Allow 0 iBstranded control lines Slow Rat Jerry Meyer North Aurora IL states stranded lines sensitive abuse bending solid wire plenty strong event p 26 sec 27 CL-84-22i--Slow Rat Use 10%-nitro fuel proposes require fuel supplied contest organizers contain 70% methanol 10% nitromethane 20% castor oil synthetic oil combination Jerry Meyer states models too fast now racing fuel too expensive p 26 sec 27 CL-84-22JSlow Rat Allow fuel tanks extend behind wing LE proposes eliminate par 2726 AMA rule book Jerry Meyer states models cannot balanced properly unless build chickenhopper tank swing-weight carburetor tank p 26 par 2726 C L-84-32ACarrier Change landing defi nition proposes change par 3012 15 read follows 1215 An arrested landing landing model comes rest deck Judges guide model comes rest normal atti tude ie same attitude just priorto takeoff will receive full points Hook engagement arresting cables required time during landing David Rolley states change would simplify landing judg ing clear up problems current rule requires some type hook cable contactif someone can land 44-ft deck stop using arresting cables should penalized p 29 par 301 215 CL-84-32BCarrier Hook must stay en gaged cable proposes revise par 301215 AMA rule book read follows 1215 Hook remain engaged arresting cable model coming rest hook disengages cable zero landing points will given Marcus P Warwashana Canton Ml states should Navy Carrier eventnot spotlanding event appears object some recent proposals have received adopted believes passage crossproposal would eliminate reason argument pertaining landing points p 29 par 301 215 CL-84-33ACarrierSevennose-high warnings before DO proposes amend basic proposal CL-84-33 relative number warnings about flying too nose-high during low speed three seven before flier disqualified David G Copeman states Carrier flown windy con ditions seem occur frequently nose model tends rise coming wind increasing warnings RULES PROPOSALS 122 Model Aviation RULES PROPOSALS three seven would allow correction warning per lap p 29 par 301 1223 CL-84-338Carrier Clarify judging 60degree nose-high flying proposes add italicized addendum revision par 3011223 follows encouraged flight official stationed center circle assess 60-degree limit im mediately notify contestant Alternatively flight officials may station themselves around circle ie two officials standing quarter circle apart assess 60degree limit Herbert Patrick MD Phil adelphia PA states flight officials stand ing together carrier deck cannot accur ately judge models attitude throughout flight circleadditionally verbal commun ication contestant officials out side circle difficult especially other events progress adjacent circles p 29 par 301 1223 Radio Control Cross-Proposals RC-B4-5ASailplane Combine classes B proposes delete par 47311 312 313 314 AMA rule book insert new paragraphs renumber existing paragraphs follows 311 TwoMeter class projected span limited 2 meters 7875 312 Standard class Pro jected span limited 254 meters 100 313 Unlimited class Projected span over 254 meters 100 32 No limits shall imposed control functions 33 Sailplanes smaller projected span may com pete larger classes contestant desires unless contest advertisement spec ifies otherwise 34 would exist ing 32 renumbered Paul R Proefrock Lexington KY RCCB member District VI states basic proposal RC-845 would ban 100-in Sailplanesa size has become norm pop ular due todays automobile sizes al ternative combine classes eliminating class very seldom flown states cross-proposal compro mise between existing rules RC-84-5 also line way current con tests held p 66 par 47311 312 313 314 RC-84-5BSailplane Eliminate Class proposes delete wording 47311 after Class AA rename existing classes B C D read classes B C respectively Keith R Scid Black Earth WI states contests having Class event rare participation event low notes fliers Class frequently use Sailplanes equipped Class B control function disconnected states further elimination Class B unjustified view its extreme popularity national level localities p 66 par 4731 1 RC-84-5CSailplane Eliminate Class proposes delete par 47311 AMA rule book Terry D Edmonds Iowa City IA notes Class B Sailplane has popular classes contests throughout country contrast Class seldom flown except Nats p 66 par 47311 RC-84-5DSailplane Combine Classes B retain Classes C D pro poses delete par 47311 AMA rule RULES PROPOSALSRULES PROPOSALS book Dennis E Carter Iowa City IA states classes merged class will less competition con test believes merging classes will limit beginners because will know have fly against pros notes merging classes may also hurt clubs hold ing contest since would have raise entry fees make up differences having separate classes p 66 par 47311 RC-84-5ESailplane Eliminate Class rename Class B Class A/B proposes make following changes sec 47 AMA rule book change 47311 read Class A/BStandard Class Sailplane Pro jected span limited 100 less Unlim ited control functions Change 47312 read Class CUnlimited Class Sailplane No limit wing span control function Change 47313 read Class CTwoMeter Class Sailplane Projected span rest limited 2 meters 78A less No other limits 47314 would eliminated Gary Rocklitz Burnsville MN cites several reasons proposed change Among following 1 basic proposal RC-84-5 says competition statistics show classes B C have much same per formance however Rocklitz club experience fliers enter Standard Class classes B models Class C competi tionif widespread practice com petition statistics Class C may biased should used reason elimi nate Classes B 2 Elimination classes would obsolete 100-in Sailplanepast ex perience has shown model design has some sort limit imposed rules eventually everyone winds up building model limit rule case everyone would build Sailplanes big ger 100 competitive reasons 3 Since everyone will building large airplanes challenges optimizing design different-size models will disappear since everyone will building/optimizing craft about same size 4 Eliminating classes will tend discourage newcomers since cannot start relatively small simple inexpensive Class model graduate Class B Class C gain experience 5 The net effect eliminating separate classesthere would Two-Meter Otherwould discourage competition Other class since models would expensive build would TwoMeter onesin fact notes cost factor may reason modelers now flying Standard-class models Unlimit ed final argument against combining classes high probability eliminating Standard class would result horse power race Sailplaning like currently appearing Giant Scale bigger planes cost harder transport re quire bigger winches require support equipment etc p 66 par 47311 312 313 314 RC-84-5F--Sailplane Combine Classes B proposes two classes combined eliminated John C Grigg Lockport NY believes elimination classes B will have gross adverse im pact competition will obsolete hun dreds existing Sailplanes believes Unlimited-class Sailplane can out-thermal Standard Modified Standard craft ex RULES PROPOSALS isting today believes what needed improve increase competition research capabilities events now have eliminating events notes eliminating Classes B will have very detrimental effect commercial pects hobby p66 par 47311312 RC-84-5GSailplane Eliminate Classes B Add new Three-Meter class pro poses delete par 47311 47312 renumber 47314 47311 change class D Add new par 47312 Class BThree-Meter class Sailplane pro jected span limited 1181 less un limited control functions Clay Howe Sturgis Ml states agrees present Classes B should eliminated basic proposal RC-84-5 would bring about too much difference size remaining two classes7875 span versus over 150 Hence creation new class intermediate wingspan actually much larger present Standard Class size feels although few experi enced major competition fliers could com pete Two-Meter plane class majority AMA memberspotential compe tition fliersshould considered p 66 par 47311 312 314 RC-84-5HSailplane Let contestants en ter class multi-class meets pro poses add following statement sec 47 AMA rule book presumably par 475 combined class events contestant may enter ship however multiclass events awards made class contestant may enter fly class James L Davis Jr Birmingham AL states some sociates analyzed two big 1982 Soaring meets NSS Soar-In AMA Nats determine what level entry class see performed relative another also polled Standard Class fliers found would have liked fly Modified Standard also given opportunity also notes new RC chan nels opening up should possible en trants enter class fu ture p 66 par 475 RC-84-17APylon Specify pylon heights proposes define heights py Ions revising par 411 27 follows 1 27 Aircraft shall fly lower tops pylons pylons number 2 3 shall have minimum height 14 feet maximum height 20 feet Pylon 1 shall have minimum height 16 feet maxi mum height 25 feet Flying below tops pylons will permitted will warned once second warning will re sult zero heat contestant breaks rule three times will disqual ified remainder contest Ronald Schorr North Hollywood CA states change should adopted increase safety event p 57 par 41127 RC-84-17CPylon All pylons 15 20 ft high proposes change par 41 127 of AMA rule book read follows 1 27 Pylon height shall maximum 20 ft minimum 15 ft pylons being same height within desired limits Aircraft shall fly lower tops pylons time except takeoff landing flier flying below RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS RULES PROPOSALS July 1983 123 RULES PROPOSALS pylons will warned once low flying further instance low flying shall cause result black-flagging heat Determination low flying will made Starter decision shall final Nelson R Eddy Puyallup WA states will reduce low flying help make event safer p 57 par 411 27 RC-84-18AQM Pylon Allow use ven turi proposes change par 4245 read 45 An RC carburetor venturi shall used Carbs venturis must have con stant-radius intake openings maxi mum diameter shall exceed 024 Car buretors venturis may modified subject availability rules Wayne W Yeager Romulus Ml states pro posal seeks limit intake geometry round-only competitors will take advantage language proposed basic proposal RC-84-18 use square venturi opening would meet crossdiameter restriction would gain corners resulting additional power boost gain additional area p 59 par 4245 RC-84-19AQM Pylon Allow use cer tain plastic-type propellers proposes change par 426 read follows 6 Pro pellers Only fixed-pitch two-bladed wood compression molded continuous-fiberglassstrand plastic propellers shall permitted Injection-molded propellers allowed Wayne W Yeager makes cross-proposal add requirement plastic propellers use continuous fibers since such types can made compression molding tech niques whereas basic proposal RC-84-1 9 could interpreted allow injection-molded props merely glass fiber-filled unsafe notes compres sion-molded props have harder break wood props p 59 par 426 RC-84-24ASailplanes Retain some FAI specifications proposes amend AMA rule book apparently par 4732 adding following Exceptions FAI nose radius restriction shall apply view however knife-edge frontal area pro hibited James L Davis Jr states FAI restrictions AMA Sailplanes re moved would lose safety restrictions such wing loadings internal ballast change geometric area RC etc notes however certain state-of-the-art thin designs need cited exception able fly legally would still protected needle-nosed ships p 66 par 4732 RULES PROPOSALSRULES PROPOSALS RC-84-28BQM Pylon Mufflers determined local conditions proposes revise par 425 read follows 5 Ex haust extraction No tuned pipe tuned-pipe muffler Magic Mufflers tuned exhaust allowed Local conditions shall determine muffler usage Douglas Brueshaber Min neapolis MN has following observations about basic proposal RC-84-28 Tuned exhaust raises speedthey too fast now Cost availability prohibitive also cost replacement event mid-air crash Too much complexity stock engine entry-level event Dont want unnecessary weight added very small planesa critical factor already factors will affect begin ners outlook event p 59 par 425 RC-84-28CQM Pylon Mufflers re quired based local conditions pro poses change par 425 AMA rule book read follows 5 Mufflers re quired CD effective expansionchamber muffler tuned muffler must used engines Roger E Wilson Circle Pines MN states certain parts country have noise requirement thus should obligated enforce muffler rule p 59 par 425 RC-84-29APylon Establish new muf fled-engine class Formula proposes create new class Formula Pylon Rac ing adding existing rules creat ing four new paragraphs follows items would added existing para graphs RC Pylon RacingFormula 1-40 lA Objective run multiple-plane Formula races lower speeds lower costs lower noise levels existing Formula event existing Formula rules regula tions shall apply except noted 41A En gines Engines shall stock side-exhaust front rotary valve induction units throttleable-carburetor equipped No engine modifications shall allowed No Schnuerle PDP Perry Directional Porting ported en gines shall allowed Engines parts must have produced quantities greater 1000 must available through normal retail outlets USA 411 engine defined complete unit ready run needing prop fuel starting voltage except glow plug front washer prop nut need considered part production unit 412A stock unaltered expansion-chamber-type muffler shall used must have produced quantities greater 1000 must available through normal retail outlets USA No muffled tuned pipes tuned muf flers shall allowed 43A Engine Control RULES PROPOSALSRULES PROPOSALS RULES PROPOSALS RULES PROPOSALS Engines shall equipped stock un altered throttleable carburetor pro vided engine engine manu facturer Throttle control shall such engine speed can reduced rpm level allows aircraft landed normal fashion Throttle control shall via individual throttle servo 44A Propeller Only wooden fixed-pitch two-bladed pro pellers readily available through normal outlets USA shall allowed Material may removed propeller blade order balance propeller other blade must remain unaltered 51A Weight aircraft ready fly less fuel shall weigh minimum four lb five-and-three-quarter lb 52 Fuel Fuel shall commercially-available contain over 15% nitro additives shall sup plied dispensed race hosting group 10 Handicap system Order takeoff may determined existing Formula judg ing system follows 103 draw-type chance lottery either flight line heat ready area may used system contestant simply draws starting position race heat 104 predetermined matrix-type starting position may used contestant signed varying starting positions during heat racing racehorse start may used flyoffs Co-proposers John G Smith Brock ton MA Robert E Wallace Avon CT state present Formula rules fine however basic proposal RC-84-29 would detrimental Formula event time cite several objections basic proposal among 1 Closed-front-type mufflers available rear-exhaust engines presently used Formula 2 no official AMAapproved set rules dealing acceptable noise limits clearly-defined enforcement methods hence merely saying use muffler very useful 3 commer cial mufflers muffled tuned pipes effective pp 56 57 par 411 414 4111 4112 413 4144 4151 4152 4110 RC-84-29CPylon Require use mufflers Formula local conditions require proposes revise par 41412 AMA rule book follows 412 Muf flers required CD effective expansion-chamber muffler tuned muffler must used engines Roger E Wilson states certain parts country have noise requirement thus should obligated enforce muffler rule p 56 par 41412 RULES PROPOSALS Canadian FF Contests Announced schedule Toronto-area FF contests summer has provided us Peter Allnutt Brampton Ontario behalf Toronto FAI Group Peter notes US FFers areas near Toronto often door would knew dates attend Canadian meets May 14 15CFB Borden Ontario Open contest Saturday FAI O-T Sunday June 18 19CFB Mountainview Ontario Great Grape Gathering events July 2 3CFB Borden Toronto District Championships Saturday Spring International FAI events Sunday July 14-1 7Centralia Airfield Ontario Canadian Nats events August 6 7CFB Borden Ontario Championships Open Saturday FAI Sunday August 27 28CFB Mountainview Eastern Canada Open events September 17 18CFB Borden Open contest Saturday 35th Annual Inter-Cities FAI contest Sunday further information contact Peter Allnutt RR 9 Brampton Ontario Canada L6T 3Z8 tel 41 61794-0544 New F3BTeani Manager Dick Odle has resigned manager US F3B team person chosen replace him team manger Rick Schrameck 7053 Deerhurst Ct San Diego CA 92139 remainder team unchanged Brian Chan assistant team manager 124 Model Aviation