WE favor safety John Preston has like bulldog pursuit safety problems column Model Aviation Apparently rigorous safety program has borne some fruit hadnt intended John Krekelberg president Twin City Radio Controllers wrote letter containing following Just finished reading column Au gust issue MA first couple para graphs struck right between eyes struggled going word letter because happen agree Ed Hunter ideas sharing past editions MA other periodicals witb local schools dentist wait ing rooms etc However want share experience club may make good idea certain areas club located Minneapolis area just completed two-year search new field During time faced township boards plan ning commissions county commissioners yes neighbors opposed us wanting locate turf could relate many stories about efforts matter just want relate think might interest others planning commission meetings forced attend obtain conditional use permit activity confronted over 100 people opposed plan de velop site rural area point dur ing hour half lambasted pillar post man stood up waving two maga zines names visible recited articles safety dangerous model air planes damage can cause fly aways fires injuries etc think get point would like suggest two things 1 issue statement column distribution old copies MA magazine withheld area field search being made what could considered hostile terri tory should done least until site obtainedand after its located public property subject changing reg ulations based citizens complaints 2 second suggestion somewhat harder make because its about column think Maybe Hons Eclipse seen under construction win last ionger Atlanta lits fiber glass fuselage beautiful says author Van Putte Note typical modelers messy workbench very necessary publish column refer John Prestons Safety Comes First ap pears month MA copy letter John via Geoffrey Styles ask con sider idea may possible practical otherwise good idea idea similar what Aircraft Own ers Pilots Association uses disseminate safety information its members sep arate publication prepared mailed sepa rately its regular magazine its mem bers see way keeping information could detrimental effort secure fly ing sites guess Im little paranoid about subject having just gone through two years searching flying site think would helpful some way could found keep informa tion within model plane fraternity Thanks suggestions John Im sure John Preston will have some comments make couple years ago Bryan Henderson District 6 vice president National Society Radio Controlled Aerobatics NSRCA now NSRCA president Back undertook task trying find out NSRCA members felt about possi ble changes competition rules mailed surveys NSRCA members received large percentage back Based way majority NSRCA members felt assem bled group tentative rules change proposals brought 1988 Nats Virginia Beach group representatives NSRCA districts hammered out set rules change proposals submitted AMA name NSRCA Lets set stage set rules change proposals submitted special interest group already received backing least majority its members read results RC Aerobatics Final Vote 44 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32549 Van Puttes short-lived Atlanta Pattern airplane receiver battery pack broke loose inside fuselage disconnected leading utter destruction Rons two-day-old airplane Author Ron Van Putte models Satbilizoran alternative choice pilots like Van Putte dont like neckstrap transmitter tray Device allows complete access transmit ter controls can buy Kevin DeShazer 10426 SE 206 P1 Kent WA 98031 know suggested NSRCA suggested rule changes passed except noise rule RCA 90-25 failed vote majority RC Aerobatics Contest Board members favor failed receive required percentage vote Some very hard questions asked particularly board members voted against noise proposal sub mitted special interest group mem bers favored turned out board members voted against noise proposal said personally favor received num ber letters against very few favor voted against sounds though doing job rep resenting constituents doesnt However didn t know got letters turned Out negative let ters Pylon Racers Pylon Racers let ter looks just like Pattern fliers letter doesnt identify himself would Pylon Racers against noise rule Pattern fliers want noise rule event way help situation make sure other events has either Its simple worked too Stand back look situation cant anything about new AMA rule change two s though majority NSRCA members wants AMA publicly rec ord favor limiting noise Can anything solution turns out very simple years National Miniature Pylon Racing Association NMPRA other special interest groups have making own rules addition AMA rules ba sically say want fly events youve got fly accordance rules So NSRCA could have noise rule though AMA wont Contest Directors would have support action announce con test promotion material NSRCA noise rule would effect Lets Maybe AMA will catch up two years make noise rule AMA rule too Recently Ive getting lots letters telephone calls contestants am very im pressed people write phone about subject because have feel strongly enough about invest time money subject Ive hearing lot about use two-cycle versus four-cycle engines Pat tern competition Everybody wants know way go dont know Until few years ago answer very clear flew Rossi Webra other premier two-cycle engine werent serious Pat tern competitor FAIs F3A Turnaround event started Before anyone figured out could run two-cycle engines other 105 x 75 splinters like propellers decreed four-cycle engines big propellers way go Suddenly serious Pattern competitors flying four-cycle engines Turnaround few diehards insisted flying two-cycle engines rewarded low scores because flew too fast couldnt stay box people began experiment new propellers engines lighter airplanes dis covered two-cycle engines still viable option Turnaround lot four-cycle con verts reverted two-cycle pretty soon Continued page iSO ORDERS SHIPPED DAY RECEIVED WARBIRD VIDEOS VHS OR BETA OUR 23RD YEAR SPE6IAL ITRODLJ6TDRY OFFER WARBIRD CHECKOUT VOL Flying P-40 Warhawk Corsair FGF Hellcat SB2-A Buccanneer Avenger NF 1325 Programs2 Hr Only $3995 ANY TWO VIDEOS ONLY $7595 ANY 3 VIDEOS ONLY 1O795 ALL S VIDEOS ONLY $19995 January 1990 45 Leader small Airfoil Technology Spinners New Master Airscrew series spinners four sizes Featuring aluminum backplate true running cones made red black engineering grade nylon strength resist starter burn spinners have excellent balance custom fit See Hobby Dealer MASTER AIRSCREW propellers accessories WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 Master Airscrew propellers Available black red sizes 1..$325 2375 21/4..425 21/2..475 WARBIRD CHECKOUT VOL II Flying P-38 Mitchell Bomber P-61 Black Widow Invader NF 1454 Programs100 Mm Only $3995 WARBIRD CHECKOUT VOL III Flying P-51 Mustang Bomber P-39 Introduction P-39 Advanced NF 1514 Programslb MIn Only $3995 CALL TOLL FREE CREDIT CARDS L J Day Night Money Order Check credit Card Mastercard Visa American Express Shipping Paid Continental US-Foreign add $500 fornia residents add 6 1/2% tax NFVIDEO LIBRARY 2554 LINCOLN BLVD #568 MARINA DEL REY CA 90291 VINYLWRITE CUSTOM LETFERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY ering comes prespaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M PEEl PROTScTlVE BACKINGPremium cast vinyl l thin olors pe styles includinq Military B[ock high NOW AAILE Stencil Mask & 1 Color Outlining Priced right no minimum charge PSEL OFF THE CARRIER TAPE example AMA numbers i/i high 1 hi h high $125P&H Call write cornplete info U ordm procisied upon rectpack & sample ITS FREE nldpped vii kit cliii m VINYLWEITE CUSTOM LEFIERING 16043 Tulsa Street Granada Hills CA 91344 818363-7131 Nooo 6PM Pacihce Mail order CA res add taz Custom Letter Today VINVLWRITE Way Rather measured noise varies torque loads very good news modelers since main noise mecha nism fact caused torque loading use efficient propellers will lead better performance less noise Its ideal solution next article series will con tinue discussion thrust thickness noise will demonstrated strictly high tip speeds thickness noise makes small contribution total propeller sound output Finally flight test data will shown strongly support inferences drawn laboratory RC Giant Scale/de Vries Continued page 43 electric screwdrivers available reasonable pric es makes logical choices use re chargeable battery-powered electric motors big birds Theyre useful manner aux iliary applications An example F-14 Tomcat being built Chuck Bailey Fremont CA Chuck enlarged set Jim Gupton F-14 drawings 24% aims power ducted-fan model twin Picco 80s Dynamax fans disassembled electric screwdriver provide strong geared source power swing Tomcats wings initial reaction wonder mo tor affected radio reception motor has com mutator brushes could possibly source unacceptable radio noise ac cording Chuck ran exhaustive series radio range checks concluded simple diode across motor leads renders electroni cally silent design rack-and-pinion gear system sweep wings well re duction drive mechanism includes ball bear ing pivots aluminum mounts model thats expected weigh 27 30 lb wet talking true Giant herethe fully extended wingspan healthy 96/2 Applying electric screwdriver motors land ing gear retracts flaps seems gaining fa vor mechanisms complex take bit metalworking expertise Powerful RC race car electric motors being considered prime movers Giants well caution go electric motor route no matter what its original source make darn sure doesnt goof up radio reception dont know somebody didnt think before people Ace RIC Inc did Theyve come up southpaw single-stick RC transmitter Using Olympic V electron ics simply reversed everything came up transmitter specifically designed 15% RC community left-handed youre interested drop em line PO Box 511 Higginsville MO 64037 Sets include Aces 91 receiver standard receiver Ni-Cdsbut no servos allows use positive-pulse high-powered servos sincerely hope readers have Merry Happy RC Aerobatics/Van Putte Continued page 45 serious Pattern competitors flying twocycle engines again end story doubt Both engines have advantages disad vantages four-cycle engines can easily turn larger propellers vertical performance bet ter However also have problems caused higher torque finesse rudder necessary vertical maneuvers two-cycle engine uses fuel costs less fourcycle fuel Propeller cost really factor cause exotic two-cycle propellers cost just much big clubs four-cycle engines turn four-cycle engines bigger heavier difficult shoehorn fuse lage airplane balance changed Cost reli ability maintainability about same early maintenance problems four-cycle engines generally thing past think four-cycle engine will win world championships F3A competition unless Prettner decides curious thing happened t989 RC Aer obatics World Championships report prob ably issue wont go great lengths about it appears international read European judges let Prettner get away new personal style flying Apparently flew very fast airplane about 200 meters out judges rules say 150-175 ters USA s Steve Helms Tony Frack owiak flew fast way out two years ago Continued page 152 150 Model Aviation W ndihoetIa5 1/4 Scale Kits $12995 Epoxy/Glass/Foam Construction Drawings Date Formula 120 Pylon Sport Standoff ScaleKit Price ping Credit cards WelcomedOhio Residents Add 7% STEP BACK & ADMIRE YOUR WORK YOURE DONE responding advertisers mention read about ModelAviation dcL THIRTY-SIXTH ANNUAL RADIO CONTROL EXPOSITION APRIL 6 7 8 1990 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO TICKETS can purchased door ADVANCE sending self-addressed stamped business size 41/ex91/2 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 10 tickets must include double postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will providethe necessary postage NOTE Registered Express Type Mail Orders Will Acceptedll Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 30 1990 sales arefinal non-refundable Hotel info map area may obtained sending stamped self-addressed envelope ticket address above Any other Exposition information avail able contacting Wayne Yeager co director ticket address phone 313941-6661 Will Nave TraditionalSwap Shop Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE No Jets SPORT MONO-PLANE non-scale models SPORT Al-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED presented Weak Signals R/C Club Toledo Ohio ma MOONEY 201 2 SCALE70 SPAN 7/ 8 LBS ENG 40 60 2 CYCLE 9O4CYCLE $13995 Ping Machine Cut Parts Balsa Kit Full Size Plans Factory Approved 3 Views Jig Built Flying Surfaces Complete Hardware Ply Capped Cowl Wing Saddle & Surfaces Complete Construction Manual Complete Decals AY4 order call write 7~ GM Plastics Inc 7252 Industrial Park Blvd Mentor Ohio 44060 1216 953-1188 got hammered international judges ever arent Hanno Prettner reigning World Champion So four-cycle engine ever win World Championships Hanno Prettner will prob ably have wrote TruTurns Bob Obenberger find out three- four-blade spinners cause Graupner has three-blade propellers Bolly has three- four-blade propellers wanted some comparisons two-blade propellers reasonable way would airplane always spinner mounted two-blade spinners Bob responded available though distributors dont have also asked anyone has special require ments give him call Romco Mfg Inc 1713/943-1867 way also asked him twoblade spinners fit Graupner propellers responded can cut spinner prop recommended fliers let him cut spin ner because its simple task make sure slots identical 1800 apart said least /32 clearance around blade nec essary safety since prop rubbing aluminum can work-harden material start cracks form point Give Bob call TruTurn because Service almost thing past intend carry commodity TruTurn long time come way Bob offered TruTurn spinner try Tiporare Lake Charles Nats several years ago little did know Id first Nats competitor run TruTurn spin ner Bob says its true Cash VISA Certified Check R/C EXTRAS 712-943-4102 1404 Vandenburg Ch W Sergeant Bluff IA 51054 RC Old-Timers/Mathews Continued page 47 equivalent AMA has less 2000 members have newsletter doctor writes called Old-Timer Gazette thts ts tn cluded free charge monthly magazine Modellistica publication its kind aly magazine has monthly printing 10000 copies cutoff date eligible designs Italy 1950 order best reflect development model building country big problem Old-Timer builders Italy availability genuine old-time engines Imported replicas incredibly expensive difficult get Rules pretty much up air time get-togethers contests rather social gatherings similar IMAA jumbo fly-ins US Scale Old-Timer events Several years ago used several columns mention some interest flying Scale designs format Texaco Since very little correspondence received relating subject sort dropped idea figuring no inter est Apparently wrong since two separate clubs sponsoring trial events nature 1989 Niagara Frontier Chapter New York has tried special event called /2A Texaco Scale RC rules 1 Model shall replica reciprocatingengine-powered man-carrying aircraft pre Continued page 154 NEW FAI TAN RUBBER Sizes 1/4 3/16 1/8 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs *175 Postpaid US via UPS Cal add 6% tax 10 lb box UPS delivered Mades USA Slow cure consistent quality Ask FAI-TAN Congratulations toE Cofallk Poland winning 1989 Wake field Cup Argentina using FAI-TAN Send *160 1988-90 Catalog SENO *150FAN MedeR Supply FOR CATALOGP0 mox 3967 Torrance CA 30610 152 Model Aviation Stand Ott Extra 230 Kits Scale Now Available Three Sizes 1/3 Scale Kt 35pIusslsshpping 30% Scale Kit $21955pusslsshppns 114 Scale Kit Splus510shipprng Also Available Weeks Special ~ plusfl5ship
Edition: Model Aviation - 1990/01
Page Numbers: 44, 45, 150, 152
WE favor safety John Preston has like bulldog pursuit safety problems column Model Aviation Apparently rigorous safety program has borne some fruit hadnt intended John Krekelberg president Twin City Radio Controllers wrote letter containing following Just finished reading column Au gust issue MA first couple para graphs struck right between eyes struggled going word letter because happen agree Ed Hunter ideas sharing past editions MA other periodicals witb local schools dentist wait ing rooms etc However want share experience club may make good idea certain areas club located Minneapolis area just completed two-year search new field During time faced township boards plan ning commissions county commissioners yes neighbors opposed us wanting locate turf could relate many stories about efforts matter just want relate think might interest others planning commission meetings forced attend obtain conditional use permit activity confronted over 100 people opposed plan de velop site rural area point dur ing hour half lambasted pillar post man stood up waving two maga zines names visible recited articles safety dangerous model air planes damage can cause fly aways fires injuries etc think get point would like suggest two things 1 issue statement column distribution old copies MA magazine withheld area field search being made what could considered hostile terri tory should done least until site obtainedand after its located public property subject changing reg ulations based citizens complaints 2 second suggestion somewhat harder make because its about column think Maybe Hons Eclipse seen under construction win last ionger Atlanta lits fiber glass fuselage beautiful says author Van Putte Note typical modelers messy workbench very necessary publish column refer John Prestons Safety Comes First ap pears month MA copy letter John via Geoffrey Styles ask con sider idea may possible practical otherwise good idea idea similar what Aircraft Own ers Pilots Association uses disseminate safety information its members sep arate publication prepared mailed sepa rately its regular magazine its mem bers see way keeping information could detrimental effort secure fly ing sites guess Im little paranoid about subject having just gone through two years searching flying site think would helpful some way could found keep informa tion within model plane fraternity Thanks suggestions John Im sure John Preston will have some comments make couple years ago Bryan Henderson District 6 vice president National Society Radio Controlled Aerobatics NSRCA now NSRCA president Back undertook task trying find out NSRCA members felt about possi ble changes competition rules mailed surveys NSRCA members received large percentage back Based way majority NSRCA members felt assem bled group tentative rules change proposals brought 1988 Nats Virginia Beach group representatives NSRCA districts hammered out set rules change proposals submitted AMA name NSRCA Lets set stage set rules change proposals submitted special interest group already received backing least majority its members read results RC Aerobatics Final Vote 44 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32549 Van Puttes short-lived Atlanta Pattern airplane receiver battery pack broke loose inside fuselage disconnected leading utter destruction Rons two-day-old airplane Author Ron Van Putte models Satbilizoran alternative choice pilots like Van Putte dont like neckstrap transmitter tray Device allows complete access transmit ter controls can buy Kevin DeShazer 10426 SE 206 P1 Kent WA 98031 know suggested NSRCA suggested rule changes passed except noise rule RCA 90-25 failed vote majority RC Aerobatics Contest Board members favor failed receive required percentage vote Some very hard questions asked particularly board members voted against noise proposal sub mitted special interest group mem bers favored turned out board members voted against noise proposal said personally favor received num ber letters against very few favor voted against sounds though doing job rep resenting constituents doesnt However didn t know got letters turned Out negative let ters Pylon Racers Pylon Racers let ter looks just like Pattern fliers letter doesnt identify himself would Pylon Racers against noise rule Pattern fliers want noise rule event way help situation make sure other events has either Its simple worked too Stand back look situation cant anything about new AMA rule change two s though majority NSRCA members wants AMA publicly rec ord favor limiting noise Can anything solution turns out very simple years National Miniature Pylon Racing Association NMPRA other special interest groups have making own rules addition AMA rules ba sically say want fly events youve got fly accordance rules So NSRCA could have noise rule though AMA wont Contest Directors would have support action announce con test promotion material NSRCA noise rule would effect Lets Maybe AMA will catch up two years make noise rule AMA rule too Recently Ive getting lots letters telephone calls contestants am very im pressed people write phone about subject because have feel strongly enough about invest time money subject Ive hearing lot about use two-cycle versus four-cycle engines Pat tern competition Everybody wants know way go dont know Until few years ago answer very clear flew Rossi Webra other premier two-cycle engine werent serious Pat tern competitor FAIs F3A Turnaround event started Before anyone figured out could run two-cycle engines other 105 x 75 splinters like propellers decreed four-cycle engines big propellers way go Suddenly serious Pattern competitors flying four-cycle engines Turnaround few diehards insisted flying two-cycle engines rewarded low scores because flew too fast couldnt stay box people began experiment new propellers engines lighter airplanes dis covered two-cycle engines still viable option Turnaround lot four-cycle con verts reverted two-cycle pretty soon Continued page iSO ORDERS SHIPPED DAY RECEIVED WARBIRD VIDEOS VHS OR BETA OUR 23RD YEAR SPE6IAL ITRODLJ6TDRY OFFER WARBIRD CHECKOUT VOL Flying P-40 Warhawk Corsair FGF Hellcat SB2-A Buccanneer Avenger NF 1325 Programs2 Hr Only $3995 ANY TWO VIDEOS ONLY $7595 ANY 3 VIDEOS ONLY 1O795 ALL S VIDEOS ONLY $19995 January 1990 45 Leader small Airfoil Technology Spinners New Master Airscrew series spinners four sizes Featuring aluminum backplate true running cones made red black engineering grade nylon strength resist starter burn spinners have excellent balance custom fit See Hobby Dealer MASTER AIRSCREW propellers accessories WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 Master Airscrew propellers Available black red sizes 1..$325 2375 21/4..425 21/2..475 WARBIRD CHECKOUT VOL II Flying P-38 Mitchell Bomber P-61 Black Widow Invader NF 1454 Programs100 Mm Only $3995 WARBIRD CHECKOUT VOL III Flying P-51 Mustang Bomber P-39 Introduction P-39 Advanced NF 1514 Programslb MIn Only $3995 CALL TOLL FREE CREDIT CARDS L J Day Night Money Order Check credit Card Mastercard Visa American Express Shipping Paid Continental US-Foreign add $500 fornia residents add 6 1/2% tax NFVIDEO LIBRARY 2554 LINCOLN BLVD #568 MARINA DEL REY CA 90291 VINYLWRITE CUSTOM LETFERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY ering comes prespaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M PEEl PROTScTlVE BACKINGPremium cast vinyl l thin olors pe styles includinq Military B[ock high NOW AAILE Stencil Mask & 1 Color Outlining Priced right no minimum charge PSEL OFF THE CARRIER TAPE example AMA numbers i/i high 1 hi h high $125P&H Call write cornplete info U ordm procisied upon rectpack & sample ITS FREE nldpped vii kit cliii m VINYLWEITE CUSTOM LEFIERING 16043 Tulsa Street Granada Hills CA 91344 818363-7131 Nooo 6PM Pacihce Mail order CA res add taz Custom Letter Today VINVLWRITE Way Rather measured noise varies torque loads very good news modelers since main noise mecha nism fact caused torque loading use efficient propellers will lead better performance less noise Its ideal solution next article series will con tinue discussion thrust thickness noise will demonstrated strictly high tip speeds thickness noise makes small contribution total propeller sound output Finally flight test data will shown strongly support inferences drawn laboratory RC Giant Scale/de Vries Continued page 43 electric screwdrivers available reasonable pric es makes logical choices use re chargeable battery-powered electric motors big birds Theyre useful manner aux iliary applications An example F-14 Tomcat being built Chuck Bailey Fremont CA Chuck enlarged set Jim Gupton F-14 drawings 24% aims power ducted-fan model twin Picco 80s Dynamax fans disassembled electric screwdriver provide strong geared source power swing Tomcats wings initial reaction wonder mo tor affected radio reception motor has com mutator brushes could possibly source unacceptable radio noise ac cording Chuck ran exhaustive series radio range checks concluded simple diode across motor leads renders electroni cally silent design rack-and-pinion gear system sweep wings well re duction drive mechanism includes ball bear ing pivots aluminum mounts model thats expected weigh 27 30 lb wet talking true Giant herethe fully extended wingspan healthy 96/2 Applying electric screwdriver motors land ing gear retracts flaps seems gaining fa vor mechanisms complex take bit metalworking expertise Powerful RC race car electric motors being considered prime movers Giants well caution go electric motor route no matter what its original source make darn sure doesnt goof up radio reception dont know somebody didnt think before people Ace RIC Inc did Theyve come up southpaw single-stick RC transmitter Using Olympic V electron ics simply reversed everything came up transmitter specifically designed 15% RC community left-handed youre interested drop em line PO Box 511 Higginsville MO 64037 Sets include Aces 91 receiver standard receiver Ni-Cdsbut no servos allows use positive-pulse high-powered servos sincerely hope readers have Merry Happy RC Aerobatics/Van Putte Continued page 45 serious Pattern competitors flying twocycle engines again end story doubt Both engines have advantages disad vantages four-cycle engines can easily turn larger propellers vertical performance bet ter However also have problems caused higher torque finesse rudder necessary vertical maneuvers two-cycle engine uses fuel costs less fourcycle fuel Propeller cost really factor cause exotic two-cycle propellers cost just much big clubs four-cycle engines turn four-cycle engines bigger heavier difficult shoehorn fuse lage airplane balance changed Cost reli ability maintainability about same early maintenance problems four-cycle engines generally thing past think four-cycle engine will win world championships F3A competition unless Prettner decides curious thing happened t989 RC Aer obatics World Championships report prob ably issue wont go great lengths about it appears international read European judges let Prettner get away new personal style flying Apparently flew very fast airplane about 200 meters out judges rules say 150-175 ters USA s Steve Helms Tony Frack owiak flew fast way out two years ago Continued page 152 150 Model Aviation W ndihoetIa5 1/4 Scale Kits $12995 Epoxy/Glass/Foam Construction Drawings Date Formula 120 Pylon Sport Standoff ScaleKit Price ping Credit cards WelcomedOhio Residents Add 7% STEP BACK & ADMIRE YOUR WORK YOURE DONE responding advertisers mention read about ModelAviation dcL THIRTY-SIXTH ANNUAL RADIO CONTROL EXPOSITION APRIL 6 7 8 1990 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO TICKETS can purchased door ADVANCE sending self-addressed stamped business size 41/ex91/2 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 10 tickets must include double postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will providethe necessary postage NOTE Registered Express Type Mail Orders Will Acceptedll Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 30 1990 sales arefinal non-refundable Hotel info map area may obtained sending stamped self-addressed envelope ticket address above Any other Exposition information avail able contacting Wayne Yeager co director ticket address phone 313941-6661 Will Nave TraditionalSwap Shop Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE No Jets SPORT MONO-PLANE non-scale models SPORT Al-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED presented Weak Signals R/C Club Toledo Ohio ma MOONEY 201 2 SCALE70 SPAN 7/ 8 LBS ENG 40 60 2 CYCLE 9O4CYCLE $13995 Ping Machine Cut Parts Balsa Kit Full Size Plans Factory Approved 3 Views Jig Built Flying Surfaces Complete Hardware Ply Capped Cowl Wing Saddle & Surfaces Complete Construction Manual Complete Decals AY4 order call write 7~ GM Plastics Inc 7252 Industrial Park Blvd Mentor Ohio 44060 1216 953-1188 got hammered international judges ever arent Hanno Prettner reigning World Champion So four-cycle engine ever win World Championships Hanno Prettner will prob ably have wrote TruTurns Bob Obenberger find out three- four-blade spinners cause Graupner has three-blade propellers Bolly has three- four-blade propellers wanted some comparisons two-blade propellers reasonable way would airplane always spinner mounted two-blade spinners Bob responded available though distributors dont have also asked anyone has special require ments give him call Romco Mfg Inc 1713/943-1867 way also asked him twoblade spinners fit Graupner propellers responded can cut spinner prop recommended fliers let him cut spin ner because its simple task make sure slots identical 1800 apart said least /32 clearance around blade nec essary safety since prop rubbing aluminum can work-harden material start cracks form point Give Bob call TruTurn because Service almost thing past intend carry commodity TruTurn long time come way Bob offered TruTurn spinner try Tiporare Lake Charles Nats several years ago little did know Id first Nats competitor run TruTurn spin ner Bob says its true Cash VISA Certified Check R/C EXTRAS 712-943-4102 1404 Vandenburg Ch W Sergeant Bluff IA 51054 RC Old-Timers/Mathews Continued page 47 equivalent AMA has less 2000 members have newsletter doctor writes called Old-Timer Gazette thts ts tn cluded free charge monthly magazine Modellistica publication its kind aly magazine has monthly printing 10000 copies cutoff date eligible designs Italy 1950 order best reflect development model building country big problem Old-Timer builders Italy availability genuine old-time engines Imported replicas incredibly expensive difficult get Rules pretty much up air time get-togethers contests rather social gatherings similar IMAA jumbo fly-ins US Scale Old-Timer events Several years ago used several columns mention some interest flying Scale designs format Texaco Since very little correspondence received relating subject sort dropped idea figuring no inter est Apparently wrong since two separate clubs sponsoring trial events nature 1989 Niagara Frontier Chapter New York has tried special event called /2A Texaco Scale RC rules 1 Model shall replica reciprocatingengine-powered man-carrying aircraft pre Continued page 154 NEW FAI TAN RUBBER Sizes 1/4 3/16 1/8 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs *175 Postpaid US via UPS Cal add 6% tax 10 lb box UPS delivered Mades USA Slow cure consistent quality Ask FAI-TAN Congratulations toE Cofallk Poland winning 1989 Wake field Cup Argentina using FAI-TAN Send *160 1988-90 Catalog SENO *150FAN MedeR Supply FOR CATALOGP0 mox 3967 Torrance CA 30610 152 Model Aviation Stand Ott Extra 230 Kits Scale Now Available Three Sizes 1/3 Scale Kt 35pIusslsshpping 30% Scale Kit $21955pusslsshppns 114 Scale Kit Splus510shipprng Also Available Weeks Special ~ plusfl5ship
Edition: Model Aviation - 1990/01
Page Numbers: 44, 45, 150, 152
WE favor safety John Preston has like bulldog pursuit safety problems column Model Aviation Apparently rigorous safety program has borne some fruit hadnt intended John Krekelberg president Twin City Radio Controllers wrote letter containing following Just finished reading column Au gust issue MA first couple para graphs struck right between eyes struggled going word letter because happen agree Ed Hunter ideas sharing past editions MA other periodicals witb local schools dentist wait ing rooms etc However want share experience club may make good idea certain areas club located Minneapolis area just completed two-year search new field During time faced township boards plan ning commissions county commissioners yes neighbors opposed us wanting locate turf could relate many stories about efforts matter just want relate think might interest others planning commission meetings forced attend obtain conditional use permit activity confronted over 100 people opposed plan de velop site rural area point dur ing hour half lambasted pillar post man stood up waving two maga zines names visible recited articles safety dangerous model air planes damage can cause fly aways fires injuries etc think get point would like suggest two things 1 issue statement column distribution old copies MA magazine withheld area field search being made what could considered hostile terri tory should done least until site obtainedand after its located public property subject changing reg ulations based citizens complaints 2 second suggestion somewhat harder make because its about column think Maybe Hons Eclipse seen under construction win last ionger Atlanta lits fiber glass fuselage beautiful says author Van Putte Note typical modelers messy workbench very necessary publish column refer John Prestons Safety Comes First ap pears month MA copy letter John via Geoffrey Styles ask con sider idea may possible practical otherwise good idea idea similar what Aircraft Own ers Pilots Association uses disseminate safety information its members sep arate publication prepared mailed sepa rately its regular magazine its mem bers see way keeping information could detrimental effort secure fly ing sites guess Im little paranoid about subject having just gone through two years searching flying site think would helpful some way could found keep informa tion within model plane fraternity Thanks suggestions John Im sure John Preston will have some comments make couple years ago Bryan Henderson District 6 vice president National Society Radio Controlled Aerobatics NSRCA now NSRCA president Back undertook task trying find out NSRCA members felt about possi ble changes competition rules mailed surveys NSRCA members received large percentage back Based way majority NSRCA members felt assem bled group tentative rules change proposals brought 1988 Nats Virginia Beach group representatives NSRCA districts hammered out set rules change proposals submitted AMA name NSRCA Lets set stage set rules change proposals submitted special interest group already received backing least majority its members read results RC Aerobatics Final Vote 44 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32549 Van Puttes short-lived Atlanta Pattern airplane receiver battery pack broke loose inside fuselage disconnected leading utter destruction Rons two-day-old airplane Author Ron Van Putte models Satbilizoran alternative choice pilots like Van Putte dont like neckstrap transmitter tray Device allows complete access transmit ter controls can buy Kevin DeShazer 10426 SE 206 P1 Kent WA 98031 know suggested NSRCA suggested rule changes passed except noise rule RCA 90-25 failed vote majority RC Aerobatics Contest Board members favor failed receive required percentage vote Some very hard questions asked particularly board members voted against noise proposal sub mitted special interest group mem bers favored turned out board members voted against noise proposal said personally favor received num ber letters against very few favor voted against sounds though doing job rep resenting constituents doesnt However didn t know got letters turned Out negative let ters Pylon Racers Pylon Racers let ter looks just like Pattern fliers letter doesnt identify himself would Pylon Racers against noise rule Pattern fliers want noise rule event way help situation make sure other events has either Its simple worked too Stand back look situation cant anything about new AMA rule change two s though majority NSRCA members wants AMA publicly rec ord favor limiting noise Can anything solution turns out very simple years National Miniature Pylon Racing Association NMPRA other special interest groups have making own rules addition AMA rules ba sically say want fly events youve got fly accordance rules So NSRCA could have noise rule though AMA wont Contest Directors would have support action announce con test promotion material NSRCA noise rule would effect Lets Maybe AMA will catch up two years make noise rule AMA rule too Recently Ive getting lots letters telephone calls contestants am very im pressed people write phone about subject because have feel strongly enough about invest time money subject Ive hearing lot about use two-cycle versus four-cycle engines Pat tern competition Everybody wants know way go dont know Until few years ago answer very clear flew Rossi Webra other premier two-cycle engine werent serious Pat tern competitor FAIs F3A Turnaround event started Before anyone figured out could run two-cycle engines other 105 x 75 splinters like propellers decreed four-cycle engines big propellers way go Suddenly serious Pattern competitors flying four-cycle engines Turnaround few diehards insisted flying two-cycle engines rewarded low scores because flew too fast couldnt stay box people began experiment new propellers engines lighter airplanes dis covered two-cycle engines still viable option Turnaround lot four-cycle con verts reverted two-cycle pretty soon Continued page iSO ORDERS SHIPPED DAY RECEIVED WARBIRD VIDEOS VHS OR BETA OUR 23RD YEAR SPE6IAL ITRODLJ6TDRY OFFER WARBIRD CHECKOUT VOL Flying P-40 Warhawk Corsair FGF Hellcat SB2-A Buccanneer Avenger NF 1325 Programs2 Hr Only $3995 ANY TWO VIDEOS ONLY $7595 ANY 3 VIDEOS ONLY 1O795 ALL S VIDEOS ONLY $19995 January 1990 45 Leader small Airfoil Technology Spinners New Master Airscrew series spinners four sizes Featuring aluminum backplate true running cones made red black engineering grade nylon strength resist starter burn spinners have excellent balance custom fit See Hobby Dealer MASTER AIRSCREW propellers accessories WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 Master Airscrew propellers Available black red sizes 1..$325 2375 21/4..425 21/2..475 WARBIRD CHECKOUT VOL II Flying P-38 Mitchell Bomber P-61 Black Widow Invader NF 1454 Programs100 Mm Only $3995 WARBIRD CHECKOUT VOL III Flying P-51 Mustang Bomber P-39 Introduction P-39 Advanced NF 1514 Programslb MIn Only $3995 CALL TOLL FREE CREDIT CARDS L J Day Night Money Order Check credit Card Mastercard Visa American Express Shipping Paid Continental US-Foreign add $500 fornia residents add 6 1/2% tax NFVIDEO LIBRARY 2554 LINCOLN BLVD #568 MARINA DEL REY CA 90291 VINYLWRITE CUSTOM LETFERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY ering comes prespaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M PEEl PROTScTlVE BACKINGPremium cast vinyl l thin olors pe styles includinq Military B[ock high NOW AAILE Stencil Mask & 1 Color Outlining Priced right no minimum charge PSEL OFF THE CARRIER TAPE example AMA numbers i/i high 1 hi h high $125P&H Call write cornplete info U ordm procisied upon rectpack & sample ITS FREE nldpped vii kit cliii m VINYLWEITE CUSTOM LEFIERING 16043 Tulsa Street Granada Hills CA 91344 818363-7131 Nooo 6PM Pacihce Mail order CA res add taz Custom Letter Today VINVLWRITE Way Rather measured noise varies torque loads very good news modelers since main noise mecha nism fact caused torque loading use efficient propellers will lead better performance less noise Its ideal solution next article series will con tinue discussion thrust thickness noise will demonstrated strictly high tip speeds thickness noise makes small contribution total propeller sound output Finally flight test data will shown strongly support inferences drawn laboratory RC Giant Scale/de Vries Continued page 43 electric screwdrivers available reasonable pric es makes logical choices use re chargeable battery-powered electric motors big birds Theyre useful manner aux iliary applications An example F-14 Tomcat being built Chuck Bailey Fremont CA Chuck enlarged set Jim Gupton F-14 drawings 24% aims power ducted-fan model twin Picco 80s Dynamax fans disassembled electric screwdriver provide strong geared source power swing Tomcats wings initial reaction wonder mo tor affected radio reception motor has com mutator brushes could possibly source unacceptable radio noise ac cording Chuck ran exhaustive series radio range checks concluded simple diode across motor leads renders electroni cally silent design rack-and-pinion gear system sweep wings well re duction drive mechanism includes ball bear ing pivots aluminum mounts model thats expected weigh 27 30 lb wet talking true Giant herethe fully extended wingspan healthy 96/2 Applying electric screwdriver motors land ing gear retracts flaps seems gaining fa vor mechanisms complex take bit metalworking expertise Powerful RC race car electric motors being considered prime movers Giants well caution go electric motor route no matter what its original source make darn sure doesnt goof up radio reception dont know somebody didnt think before people Ace RIC Inc did Theyve come up southpaw single-stick RC transmitter Using Olympic V electron ics simply reversed everything came up transmitter specifically designed 15% RC community left-handed youre interested drop em line PO Box 511 Higginsville MO 64037 Sets include Aces 91 receiver standard receiver Ni-Cdsbut no servos allows use positive-pulse high-powered servos sincerely hope readers have Merry Happy RC Aerobatics/Van Putte Continued page 45 serious Pattern competitors flying twocycle engines again end story doubt Both engines have advantages disad vantages four-cycle engines can easily turn larger propellers vertical performance bet ter However also have problems caused higher torque finesse rudder necessary vertical maneuvers two-cycle engine uses fuel costs less fourcycle fuel Propeller cost really factor cause exotic two-cycle propellers cost just much big clubs four-cycle engines turn four-cycle engines bigger heavier difficult shoehorn fuse lage airplane balance changed Cost reli ability maintainability about same early maintenance problems four-cycle engines generally thing past think four-cycle engine will win world championships F3A competition unless Prettner decides curious thing happened t989 RC Aer obatics World Championships report prob ably issue wont go great lengths about it appears international read European judges let Prettner get away new personal style flying Apparently flew very fast airplane about 200 meters out judges rules say 150-175 ters USA s Steve Helms Tony Frack owiak flew fast way out two years ago Continued page 152 150 Model Aviation W ndihoetIa5 1/4 Scale Kits $12995 Epoxy/Glass/Foam Construction Drawings Date Formula 120 Pylon Sport Standoff ScaleKit Price ping Credit cards WelcomedOhio Residents Add 7% STEP BACK & ADMIRE YOUR WORK YOURE DONE responding advertisers mention read about ModelAviation dcL THIRTY-SIXTH ANNUAL RADIO CONTROL EXPOSITION APRIL 6 7 8 1990 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO TICKETS can purchased door ADVANCE sending self-addressed stamped business size 41/ex91/2 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 10 tickets must include double postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will providethe necessary postage NOTE Registered Express Type Mail Orders Will Acceptedll Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 30 1990 sales arefinal non-refundable Hotel info map area may obtained sending stamped self-addressed envelope ticket address above Any other Exposition information avail able contacting Wayne Yeager co director ticket address phone 313941-6661 Will Nave TraditionalSwap Shop Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE No Jets SPORT MONO-PLANE non-scale models SPORT Al-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED presented Weak Signals R/C Club Toledo Ohio ma MOONEY 201 2 SCALE70 SPAN 7/ 8 LBS ENG 40 60 2 CYCLE 9O4CYCLE $13995 Ping Machine Cut Parts Balsa Kit Full Size Plans Factory Approved 3 Views Jig Built Flying Surfaces Complete Hardware Ply Capped Cowl Wing Saddle & Surfaces Complete Construction Manual Complete Decals AY4 order call write 7~ GM Plastics Inc 7252 Industrial Park Blvd Mentor Ohio 44060 1216 953-1188 got hammered international judges ever arent Hanno Prettner reigning World Champion So four-cycle engine ever win World Championships Hanno Prettner will prob ably have wrote TruTurns Bob Obenberger find out three- four-blade spinners cause Graupner has three-blade propellers Bolly has three- four-blade propellers wanted some comparisons two-blade propellers reasonable way would airplane always spinner mounted two-blade spinners Bob responded available though distributors dont have also asked anyone has special require ments give him call Romco Mfg Inc 1713/943-1867 way also asked him twoblade spinners fit Graupner propellers responded can cut spinner prop recommended fliers let him cut spin ner because its simple task make sure slots identical 1800 apart said least /32 clearance around blade nec essary safety since prop rubbing aluminum can work-harden material start cracks form point Give Bob call TruTurn because Service almost thing past intend carry commodity TruTurn long time come way Bob offered TruTurn spinner try Tiporare Lake Charles Nats several years ago little did know Id first Nats competitor run TruTurn spin ner Bob says its true Cash VISA Certified Check R/C EXTRAS 712-943-4102 1404 Vandenburg Ch W Sergeant Bluff IA 51054 RC Old-Timers/Mathews Continued page 47 equivalent AMA has less 2000 members have newsletter doctor writes called Old-Timer Gazette thts ts tn cluded free charge monthly magazine Modellistica publication its kind aly magazine has monthly printing 10000 copies cutoff date eligible designs Italy 1950 order best reflect development model building country big problem Old-Timer builders Italy availability genuine old-time engines Imported replicas incredibly expensive difficult get Rules pretty much up air time get-togethers contests rather social gatherings similar IMAA jumbo fly-ins US Scale Old-Timer events Several years ago used several columns mention some interest flying Scale designs format Texaco Since very little correspondence received relating subject sort dropped idea figuring no inter est Apparently wrong since two separate clubs sponsoring trial events nature 1989 Niagara Frontier Chapter New York has tried special event called /2A Texaco Scale RC rules 1 Model shall replica reciprocatingengine-powered man-carrying aircraft pre Continued page 154 NEW FAI TAN RUBBER Sizes 1/4 3/16 1/8 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs *175 Postpaid US via UPS Cal add 6% tax 10 lb box UPS delivered Mades USA Slow cure consistent quality Ask FAI-TAN Congratulations toE Cofallk Poland winning 1989 Wake field Cup Argentina using FAI-TAN Send *160 1988-90 Catalog SENO *150FAN MedeR Supply FOR CATALOGP0 mox 3967 Torrance CA 30610 152 Model Aviation Stand Ott Extra 230 Kits Scale Now Available Three Sizes 1/3 Scale Kt 35pIusslsshpping 30% Scale Kit $21955pusslsshppns 114 Scale Kit Splus510shipprng Also Available Weeks Special ~ plusfl5ship
Edition: Model Aviation - 1990/01
Page Numbers: 44, 45, 150, 152
WE favor safety John Preston has like bulldog pursuit safety problems column Model Aviation Apparently rigorous safety program has borne some fruit hadnt intended John Krekelberg president Twin City Radio Controllers wrote letter containing following Just finished reading column Au gust issue MA first couple para graphs struck right between eyes struggled going word letter because happen agree Ed Hunter ideas sharing past editions MA other periodicals witb local schools dentist wait ing rooms etc However want share experience club may make good idea certain areas club located Minneapolis area just completed two-year search new field During time faced township boards plan ning commissions county commissioners yes neighbors opposed us wanting locate turf could relate many stories about efforts matter just want relate think might interest others planning commission meetings forced attend obtain conditional use permit activity confronted over 100 people opposed plan de velop site rural area point dur ing hour half lambasted pillar post man stood up waving two maga zines names visible recited articles safety dangerous model air planes damage can cause fly aways fires injuries etc think get point would like suggest two things 1 issue statement column distribution old copies MA magazine withheld area field search being made what could considered hostile terri tory should done least until site obtainedand after its located public property subject changing reg ulations based citizens complaints 2 second suggestion somewhat harder make because its about column think Maybe Hons Eclipse seen under construction win last ionger Atlanta lits fiber glass fuselage beautiful says author Van Putte Note typical modelers messy workbench very necessary publish column refer John Prestons Safety Comes First ap pears month MA copy letter John via Geoffrey Styles ask con sider idea may possible practical otherwise good idea idea similar what Aircraft Own ers Pilots Association uses disseminate safety information its members sep arate publication prepared mailed sepa rately its regular magazine its mem bers see way keeping information could detrimental effort secure fly ing sites guess Im little paranoid about subject having just gone through two years searching flying site think would helpful some way could found keep informa tion within model plane fraternity Thanks suggestions John Im sure John Preston will have some comments make couple years ago Bryan Henderson District 6 vice president National Society Radio Controlled Aerobatics NSRCA now NSRCA president Back undertook task trying find out NSRCA members felt about possi ble changes competition rules mailed surveys NSRCA members received large percentage back Based way majority NSRCA members felt assem bled group tentative rules change proposals brought 1988 Nats Virginia Beach group representatives NSRCA districts hammered out set rules change proposals submitted AMA name NSRCA Lets set stage set rules change proposals submitted special interest group already received backing least majority its members read results RC Aerobatics Final Vote 44 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32549 Van Puttes short-lived Atlanta Pattern airplane receiver battery pack broke loose inside fuselage disconnected leading utter destruction Rons two-day-old airplane Author Ron Van Putte models Satbilizoran alternative choice pilots like Van Putte dont like neckstrap transmitter tray Device allows complete access transmit ter controls can buy Kevin DeShazer 10426 SE 206 P1 Kent WA 98031 know suggested NSRCA suggested rule changes passed except noise rule RCA 90-25 failed vote majority RC Aerobatics Contest Board members favor failed receive required percentage vote Some very hard questions asked particularly board members voted against noise proposal sub mitted special interest group mem bers favored turned out board members voted against noise proposal said personally favor received num ber letters against very few favor voted against sounds though doing job rep resenting constituents doesnt However didn t know got letters turned Out negative let ters Pylon Racers Pylon Racers let ter looks just like Pattern fliers letter doesnt identify himself would Pylon Racers against noise rule Pattern fliers want noise rule event way help situation make sure other events has either Its simple worked too Stand back look situation cant anything about new AMA rule change two s though majority NSRCA members wants AMA publicly rec ord favor limiting noise Can anything solution turns out very simple years National Miniature Pylon Racing Association NMPRA other special interest groups have making own rules addition AMA rules ba sically say want fly events youve got fly accordance rules So NSRCA could have noise rule though AMA wont Contest Directors would have support action announce con test promotion material NSRCA noise rule would effect Lets Maybe AMA will catch up two years make noise rule AMA rule too Recently Ive getting lots letters telephone calls contestants am very im pressed people write phone about subject because have feel strongly enough about invest time money subject Ive hearing lot about use two-cycle versus four-cycle engines Pat tern competition Everybody wants know way go dont know Until few years ago answer very clear flew Rossi Webra other premier two-cycle engine werent serious Pat tern competitor FAIs F3A Turnaround event started Before anyone figured out could run two-cycle engines other 105 x 75 splinters like propellers decreed four-cycle engines big propellers way go Suddenly serious Pattern competitors flying four-cycle engines Turnaround few diehards insisted flying two-cycle engines rewarded low scores because flew too fast couldnt stay box people began experiment new propellers engines lighter airplanes dis covered two-cycle engines still viable option Turnaround lot four-cycle con verts reverted two-cycle pretty soon Continued page iSO ORDERS SHIPPED DAY RECEIVED WARBIRD VIDEOS VHS OR BETA OUR 23RD YEAR SPE6IAL ITRODLJ6TDRY OFFER WARBIRD CHECKOUT VOL Flying P-40 Warhawk Corsair FGF Hellcat SB2-A Buccanneer Avenger NF 1325 Programs2 Hr Only $3995 ANY TWO VIDEOS ONLY $7595 ANY 3 VIDEOS ONLY 1O795 ALL S VIDEOS ONLY $19995 January 1990 45 Leader small Airfoil Technology Spinners New Master Airscrew series spinners four sizes Featuring aluminum backplate true running cones made red black engineering grade nylon strength resist starter burn spinners have excellent balance custom fit See Hobby Dealer MASTER AIRSCREW propellers accessories WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 Master Airscrew propellers Available black red sizes 1..$325 2375 21/4..425 21/2..475 WARBIRD CHECKOUT VOL II Flying P-38 Mitchell Bomber P-61 Black Widow Invader NF 1454 Programs100 Mm Only $3995 WARBIRD CHECKOUT VOL III Flying P-51 Mustang Bomber P-39 Introduction P-39 Advanced NF 1514 Programslb MIn Only $3995 CALL TOLL FREE CREDIT CARDS L J Day Night Money Order Check credit Card Mastercard Visa American Express Shipping Paid Continental US-Foreign add $500 fornia residents add 6 1/2% tax NFVIDEO LIBRARY 2554 LINCOLN BLVD #568 MARINA DEL REY CA 90291 VINYLWRITE CUSTOM LETFERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY ering comes prespaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M PEEl PROTScTlVE BACKINGPremium cast vinyl l thin olors pe styles includinq Military B[ock high NOW AAILE Stencil Mask & 1 Color Outlining Priced right no minimum charge PSEL OFF THE CARRIER TAPE example AMA numbers i/i high 1 hi h high $125P&H Call write cornplete info U ordm procisied upon rectpack & sample ITS FREE nldpped vii kit cliii m VINYLWEITE CUSTOM LEFIERING 16043 Tulsa Street Granada Hills CA 91344 818363-7131 Nooo 6PM Pacihce Mail order CA res add taz Custom Letter Today VINVLWRITE Way Rather measured noise varies torque loads very good news modelers since main noise mecha nism fact caused torque loading use efficient propellers will lead better performance less noise Its ideal solution next article series will con tinue discussion thrust thickness noise will demonstrated strictly high tip speeds thickness noise makes small contribution total propeller sound output Finally flight test data will shown strongly support inferences drawn laboratory RC Giant Scale/de Vries Continued page 43 electric screwdrivers available reasonable pric es makes logical choices use re chargeable battery-powered electric motors big birds Theyre useful manner aux iliary applications An example F-14 Tomcat being built Chuck Bailey Fremont CA Chuck enlarged set Jim Gupton F-14 drawings 24% aims power ducted-fan model twin Picco 80s Dynamax fans disassembled electric screwdriver provide strong geared source power swing Tomcats wings initial reaction wonder mo tor affected radio reception motor has com mutator brushes could possibly source unacceptable radio noise ac cording Chuck ran exhaustive series radio range checks concluded simple diode across motor leads renders electroni cally silent design rack-and-pinion gear system sweep wings well re duction drive mechanism includes ball bear ing pivots aluminum mounts model thats expected weigh 27 30 lb wet talking true Giant herethe fully extended wingspan healthy 96/2 Applying electric screwdriver motors land ing gear retracts flaps seems gaining fa vor mechanisms complex take bit metalworking expertise Powerful RC race car electric motors being considered prime movers Giants well caution go electric motor route no matter what its original source make darn sure doesnt goof up radio reception dont know somebody didnt think before people Ace RIC Inc did Theyve come up southpaw single-stick RC transmitter Using Olympic V electron ics simply reversed everything came up transmitter specifically designed 15% RC community left-handed youre interested drop em line PO Box 511 Higginsville MO 64037 Sets include Aces 91 receiver standard receiver Ni-Cdsbut no servos allows use positive-pulse high-powered servos sincerely hope readers have Merry Happy RC Aerobatics/Van Putte Continued page 45 serious Pattern competitors flying twocycle engines again end story doubt Both engines have advantages disad vantages four-cycle engines can easily turn larger propellers vertical performance bet ter However also have problems caused higher torque finesse rudder necessary vertical maneuvers two-cycle engine uses fuel costs less fourcycle fuel Propeller cost really factor cause exotic two-cycle propellers cost just much big clubs four-cycle engines turn four-cycle engines bigger heavier difficult shoehorn fuse lage airplane balance changed Cost reli ability maintainability about same early maintenance problems four-cycle engines generally thing past think four-cycle engine will win world championships F3A competition unless Prettner decides curious thing happened t989 RC Aer obatics World Championships report prob ably issue wont go great lengths about it appears international read European judges let Prettner get away new personal style flying Apparently flew very fast airplane about 200 meters out judges rules say 150-175 ters USA s Steve Helms Tony Frack owiak flew fast way out two years ago Continued page 152 150 Model Aviation W ndihoetIa5 1/4 Scale Kits $12995 Epoxy/Glass/Foam Construction Drawings Date Formula 120 Pylon Sport Standoff ScaleKit Price ping Credit cards WelcomedOhio Residents Add 7% STEP BACK & ADMIRE YOUR WORK YOURE DONE responding advertisers mention read about ModelAviation dcL THIRTY-SIXTH ANNUAL RADIO CONTROL EXPOSITION APRIL 6 7 8 1990 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO TICKETS can purchased door ADVANCE sending self-addressed stamped business size 41/ex91/2 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 10 tickets must include double postage US orders must include 25 cents per order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will providethe necessary postage NOTE Registered Express Type Mail Orders Will Acceptedll Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 30 1990 sales arefinal non-refundable Hotel info map area may obtained sending stamped self-addressed envelope ticket address above Any other Exposition information avail able contacting Wayne Yeager co director ticket address phone 313941-6661 Will Nave TraditionalSwap Shop Saturday Night Auction COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE No Jets SPORT MONO-PLANE non-scale models SPORT Al-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED presented Weak Signals R/C Club Toledo Ohio ma MOONEY 201 2 SCALE70 SPAN 7/ 8 LBS ENG 40 60 2 CYCLE 9O4CYCLE $13995 Ping Machine Cut Parts Balsa Kit Full Size Plans Factory Approved 3 Views Jig Built Flying Surfaces Complete Hardware Ply Capped Cowl Wing Saddle & Surfaces Complete Construction Manual Complete Decals AY4 order call write 7~ GM Plastics Inc 7252 Industrial Park Blvd Mentor Ohio 44060 1216 953-1188 got hammered international judges ever arent Hanno Prettner reigning World Champion So four-cycle engine ever win World Championships Hanno Prettner will prob ably have wrote TruTurns Bob Obenberger find out three- four-blade spinners cause Graupner has three-blade propellers Bolly has three- four-blade propellers wanted some comparisons two-blade propellers reasonable way would airplane always spinner mounted two-blade spinners Bob responded available though distributors dont have also asked anyone has special require ments give him call Romco Mfg Inc 1713/943-1867 way also asked him twoblade spinners fit Graupner propellers responded can cut spinner prop recommended fliers let him cut spin ner because its simple task make sure slots identical 1800 apart said least /32 clearance around blade nec essary safety since prop rubbing aluminum can work-harden material start cracks form point Give Bob call TruTurn because Service almost thing past intend carry commodity TruTurn long time come way Bob offered TruTurn spinner try Tiporare Lake Charles Nats several years ago little did know Id first Nats competitor run TruTurn spin ner Bob says its true Cash VISA Certified Check R/C EXTRAS 712-943-4102 1404 Vandenburg Ch W Sergeant Bluff IA 51054 RC Old-Timers/Mathews Continued page 47 equivalent AMA has less 2000 members have newsletter doctor writes called Old-Timer Gazette thts ts tn cluded free charge monthly magazine Modellistica publication its kind aly magazine has monthly printing 10000 copies cutoff date eligible designs Italy 1950 order best reflect development model building country big problem Old-Timer builders Italy availability genuine old-time engines Imported replicas incredibly expensive difficult get Rules pretty much up air time get-togethers contests rather social gatherings similar IMAA jumbo fly-ins US Scale Old-Timer events Several years ago used several columns mention some interest flying Scale designs format Texaco Since very little correspondence received relating subject sort dropped idea figuring no inter est Apparently wrong since two separate clubs sponsoring trial events nature 1989 Niagara Frontier Chapter New York has tried special event called /2A Texaco Scale RC rules 1 Model shall replica reciprocatingengine-powered man-carrying aircraft pre Continued page 154 NEW FAI TAN RUBBER Sizes 1/4 3/16 1/8 042 thick pound box Price *1475 includes 4 oz Slick lube *1375 no lube Slick costs *175 Postpaid US via UPS Cal add 6% tax 10 lb box UPS delivered Mades USA Slow cure consistent quality Ask FAI-TAN Congratulations toE Cofallk Poland winning 1989 Wake field Cup Argentina using FAI-TAN Send *160 1988-90 Catalog SENO *150FAN MedeR Supply FOR CATALOGP0 mox 3967 Torrance CA 30610 152 Model Aviation Stand Ott Extra 230 Kits Scale Now Available Three Sizes 1/3 Scale Kt 35pIusslsshpping 30% Scale Kit $21955pusslsshppns 114 Scale Kit Splus510shipprng Also Available Weeks Special ~ plusfl5ship