PYLON RACING Bill Hager WELL read will likely already know 1980 Nats will held Wilmington OhioAugust 10 through August 17 Wilmington located about 35 miles southeast Dayton Ohio Dayton loca tion 1976 Nats best attended Nats ever Pylon over eighty entries both Quarter Midget Formula goes well 1980 should better Dont forget finish top ten Formula Nats automatically qualified National Miniature Pylon Rac ing Association NMPRA Championship Race provided NMPRA member before race years race will held Titusville FL around end October exact date will announced later have receiving lot mail showing what seems quite increase pylon activity around country have also received quite few requests help advertising contest dates Soory gang just room publish dates column can plug contests national importance However order keep people across country informed what going will time time give some contest reports area has race wants reported send write up along some 5 x 7 black white photos will try get seems though zA pylon racing has become very popular us watching snowflakes fall flier still going plane small can just throw car between races warm up Im sure has something type racing going right through winter Some have written asking what types rules being used set rules used Wisconsin area Stock Engines Generally engine must used Out ofthe box replace ment parts must used original manufacturer Any replacement parts other manufacturers must equivalent original factory parts must designed increased power Violations stock engine requirement include limited 1 Increasing venturi bore 2 Increasing size cylinder bypass ports exhaust ports compression ratio 3 Changing shaft port timing General AMA FCC regulations cover ing RC flier aircraft equipment shall applicable event except noted herein shall no limitations type radio equipment fitted aircraft except two control functions shall actuated eg elevator ailerons elevator rudder contestant shall allowed enter two air craft event second aircraft may used alternate does constitute separate entry Parts aircraft may used parts other aircraft Aircraft Requirements following aircraft configurations allowed Flying wing designs pod boom designs aircraft shall meet following measurements perimeter/girth fuselage measured point midway between rear wing front stabilizer shall 3 in. concavity aircraft sides measured laying straightedge along fuselage side shall no Aircraft Specifications Engine Maximum total nominal engine dis placement shall 00519 cu Engines must stock production units assembled stock parts Engine parts whether original replacement must have produced quantities greater 1000 units must available through normal retail outlets USA engine manufacturer No ball bearing engines tuned exhaust systems allowed No throttle muffler required Kim Kraft needle valve assemblies allowed use cylinder heads modified change compression ratio stock engine allowed No fuel pressurization except mospheric pressure allowed No screen required venturi Lapping fitting engine piston cylinder permitted However no grinding machining filing engine parts permitted venturi diameter shall no larger ellers Either wooden plastic type two bladed fixed-pitch propellers allowed Spin ners propeller reworking allowed Weight Weight less fuel including equipment necessary flight shall least 20 oz 32 oz Fuselage fuselage shall have minimum width 2 minimum height 4 Both measurements need occur same cross section both measurements must occur within length fuselage bounded wing chord Fillets profile canopies profile cowlings other profile extensions shall counted toward meeting minimum width minimum height measurements minimum width height requirements waived fuselage has minimum cross sectional area 80 sq challenged contest officials contestant shall provide documentation aircraft fills requirement No landing gear required part wing intersected fuselage shall considered part fuselage determining fuselage height An extension basic fuselage profile extension its base less 1 wide Fuel Fuel shall contain 25% nitromethane shall provided dispensed contest sponsors Fuel tank capacity limited 2 fi oz Fixed fuel pick-up line other positive fuel cut-off required Wing minimum wing area including part intersected fuselage shall 200 sq wing shall constant chord shall have minimum thickness 0875 Any portion wing does conform constant chord planform does meet minimum thickness requirement shall count toward meeting minimum wing area require ment identification purposes right wing shall have affixed two large numeralsreadily visible just example ules just area area may different check local fliers before start building See next month Bill Hager 4622 Bridgeport Dr Garland TX 75043 20 Model Aviation Fliers prepare tor anosner great 1-ormula race Okiafloma City flagman Dave Hailer looks Dave hosts 3 4 races summer Note portable safety barrier background Poetry motion Bill Pries worksthe transmitter Bill Onori caller Note Onoris safety ear protectors used during thetime launches screaming model Pries won Formula 1979 Nationals Seen Okie City