RADIO CONTROL SCALE AEROBATICS u-I FOR MANY us nonflying season year means its time busy working next years dream model and/or giving current models thorough inspection preparation funfilled 1998 Whichever case hope youre enjoying Mailbox bimonthly column have twice much time collect mail input readers few samples Brad Shepherd Victoria TX sent several nice shots /5-scale Stephens Akro Linck Models kit Brad says its hot contender Minmac event class IMACInternational Miniature Aerobatics Clubcompetition smaller-size models engines Saito 50 nose though combination offers slightly less unlimited vertical Minmac event sounds like just ticket Rodney Peters Pierre SD Rodney writes cost size major consideration almost everyone fly Hed like know kits plans size build truly great fliers Im sure some will want offer input Robert Hixson San Francisco CA sent photo Dalotel DM-165 Viking built plans Dick Hansen Robert flies Pattern IMAC events feels needs discussion about what is legal aircraft Scale Aerobatics competition Dalotel bothersome area because shortage documentation fact has retracts somewhat Patternish look straight trailing edge Hed like hear anyone knows prototype today have some IMAC information may find useful Internet access IMAC has official web site wwwmini-iaccom site good resource information IMAC events rules flight schedules can also sign up site receive MAC mailing list will keep E-mail box full daily basis Some changes IMAC 1998 will include ban gyros competition regional representatives organization dues level $20 per calendar year Join now get full years membership ending December 31 1998 may also change mailing address IMAC mail sent current address will forwarded Minmac RC model aviation has become generally accepted bigger better everyone agrees laws physics degree visibility favor larger models especially aerobatics aerobatics competition Thats upper-class competition pilots fly bigger models Others like big airplanes because have trouble seeing small models two factors weigh against larger models cost manageability real giant models use engines burn gas/oil mixes lower fuel costs overall cost kits engines giant servos accessories can very high manageability mean overall level annoyance during building finishing transporting same shop easily accommodates building 60-inch model may woefully inadequate 100-inch monsters Storing big models also challenging transporting field can hassle some pilots wish deal modeler will have own favorite size based personal preferences budget shop size favorite-size airplanes have wingspans approximately 80 inches Smaller airplanes harder see harder fly very smoothly larger airplanes dont fit shop vehicle well just because like 80-inch airplanes doesnt mean thats right size nor does mean its most-popular-size model popular least common RC aircraft designed powered 40 two-stroke engines February 1998 107 Brad Shepherd Victoria TX says Stephens Akro Linck Models kit great choice Minimac-type flying Power Saito 50 four-stroke Robert Hixsons San Francisco CA Dalotel DM-165 Viking built plans Dick Hansen Has retracts four-stroke VS 120 power greatest seleclia asrplaae plans t. Herb Clakeys renowned Flytine Kits Order yoars today Prices include postage handting write complete list $5 Vetie Monoconpe$8 Bellataca Skyracket$10 Great Lakes Trainee $5 Rearwin Speedster $8 Cnrtiss Rabin$10 Megawcnope $5 Flyrne$8 Stearman CSB$10 Fairchild 22 $5 Curtiss Seagull$8 General Aristocrat$10 Bucker inegmeitter $5 Stinsun Vayager$8 Travel Air 6000nose eitakel lOOd$8 Kianer Spuosteros sass $5 CG2 Punster$8 Quaker Flash airplanes relatively inexpensive easy build transport large enough fairly visible flight modeler just testing waters Scale Aerobatic flight competition 40size airplane can very attractive practical choice allow smaller models compete level IMAC has designed class competition dubbed Minmac allows models powered engines no 50 displacement two-strokes 65 four-strokes airplanes fly same sequences big models scored separately unless pilot wishes fly direct competition big airplanes Although IMAC rules award points aircraft performance wow appeal except Freestyle event feel judges swayed bigger models sometimes award higher scores same maneuvers flown identically smaller models So Minimac class does away such potential size bias scoring pilots like Brad Rodney prefer smaller airplanes may also wish compete class should perfect Kits Minmac sized models available sources few latest include Ace R/C Staudacher new Extra 300 kits Great Planes House Balsa Engines will power kits plentiful affordable Hotly awaitedand probably available time read thisis new 53 four-stroke Futaba-YS Expected have power output well above other fourstroke engines size YS 53 utilizes trademark YS pressurized fuel system supercharging via large volume pressurized intake chamber engine reportedly weighs 16 ounces 450 grams includes muffler adjustable connecting pipe Street price will approximately $200 Up Down Elevator Ive experiences models just didnt behave well pulling pushing elevator has become much prevalent recent years because increase number models use dual servos elevator actuation advantages using two servos elevator control obvious servo needs have enough torque operate elevator half 120 sized models upward need use much-more-powerful servo needed smaller airplanes cases can use smaller faster servos pairs enjoy ample torque better speed comparable weight compared giant servos dual servos also very good chance can save airplane servos fails flight installation elevator servos tail airplane yields simple installation thats easy inspect maintain plus direct control rod installation things favoring dual-servo activation elevator halves its easy see such popular option Still plenty potential flies dual-servo ointment Lets take look some areas need watch out As single-servo installations driving both elevator halves must make sure elevator halves centered exactly same have exactly same throw both directions elevator travel challenging enough just servo depending radio use may challenging dual servos almost case Ive worked airplane problems pushes pulls culprit different centering halves different throw either up down elevator directions both single-servo setup thing can take granted servo throw same both elevator halves leaves servo horn control horn pushrod length three variables need inspected adjusted dual-servo setup several variables Primary fact servos may moving same distance other true whether using identical servos measure actual throw several servos will find variations usually very small radio cannot accommodate dual elevator channels have no way match throws would use dual-servo setup radio didnt have ability adjust centering travel servo independently Luckily fly Airtronics systems problem Other top systems can also handle dual-channel situation properly would use type systems dual elevator servoswith exception say radio handles dual-channel situation properly mean can control aspects servo travel independently still having both elevator servos respond together stick trimmer mixer outputs know lot using single receiver channel operate dual elevator servos utilizing Y hamess problem servos move identical fashion have two perfectly matched servos rotates opposite direction relation elevator servos mounted standard positions have never seen such setup yield equal throw elevators have used space Ill continue discussion later have used dual-servo single-channel setup aftermarket reversers Id like hear about experience Have fun fly safely r 108 Model Aviation INE MODELS Plans Division 15127 N 100th Way Scottsdale AZ 85260
Edition: Model Aviation - 1998/02
Page Numbers: 107, 108
RADIO CONTROL SCALE AEROBATICS u-I FOR MANY us nonflying season year means its time busy working next years dream model and/or giving current models thorough inspection preparation funfilled 1998 Whichever case hope youre enjoying Mailbox bimonthly column have twice much time collect mail input readers few samples Brad Shepherd Victoria TX sent several nice shots /5-scale Stephens Akro Linck Models kit Brad says its hot contender Minmac event class IMACInternational Miniature Aerobatics Clubcompetition smaller-size models engines Saito 50 nose though combination offers slightly less unlimited vertical Minmac event sounds like just ticket Rodney Peters Pierre SD Rodney writes cost size major consideration almost everyone fly Hed like know kits plans size build truly great fliers Im sure some will want offer input Robert Hixson San Francisco CA sent photo Dalotel DM-165 Viking built plans Dick Hansen Robert flies Pattern IMAC events feels needs discussion about what is legal aircraft Scale Aerobatics competition Dalotel bothersome area because shortage documentation fact has retracts somewhat Patternish look straight trailing edge Hed like hear anyone knows prototype today have some IMAC information may find useful Internet access IMAC has official web site wwwmini-iaccom site good resource information IMAC events rules flight schedules can also sign up site receive MAC mailing list will keep E-mail box full daily basis Some changes IMAC 1998 will include ban gyros competition regional representatives organization dues level $20 per calendar year Join now get full years membership ending December 31 1998 may also change mailing address IMAC mail sent current address will forwarded Minmac RC model aviation has become generally accepted bigger better everyone agrees laws physics degree visibility favor larger models especially aerobatics aerobatics competition Thats upper-class competition pilots fly bigger models Others like big airplanes because have trouble seeing small models two factors weigh against larger models cost manageability real giant models use engines burn gas/oil mixes lower fuel costs overall cost kits engines giant servos accessories can very high manageability mean overall level annoyance during building finishing transporting same shop easily accommodates building 60-inch model may woefully inadequate 100-inch monsters Storing big models also challenging transporting field can hassle some pilots wish deal modeler will have own favorite size based personal preferences budget shop size favorite-size airplanes have wingspans approximately 80 inches Smaller airplanes harder see harder fly very smoothly larger airplanes dont fit shop vehicle well just because like 80-inch airplanes doesnt mean thats right size nor does mean its most-popular-size model popular least common RC aircraft designed powered 40 two-stroke engines February 1998 107 Brad Shepherd Victoria TX says Stephens Akro Linck Models kit great choice Minimac-type flying Power Saito 50 four-stroke Robert Hixsons San Francisco CA Dalotel DM-165 Viking built plans Dick Hansen Has retracts four-stroke VS 120 power greatest seleclia asrplaae plans t. Herb Clakeys renowned Flytine Kits Order yoars today Prices include postage handting write complete list $5 Vetie Monoconpe$8 Bellataca Skyracket$10 Great Lakes Trainee $5 Rearwin Speedster $8 Cnrtiss Rabin$10 Megawcnope $5 Flyrne$8 Stearman CSB$10 Fairchild 22 $5 Curtiss Seagull$8 General Aristocrat$10 Bucker inegmeitter $5 Stinsun Vayager$8 Travel Air 6000nose eitakel lOOd$8 Kianer Spuosteros sass $5 CG2 Punster$8 Quaker Flash airplanes relatively inexpensive easy build transport large enough fairly visible flight modeler just testing waters Scale Aerobatic flight competition 40size airplane can very attractive practical choice allow smaller models compete level IMAC has designed class competition dubbed Minmac allows models powered engines no 50 displacement two-strokes 65 four-strokes airplanes fly same sequences big models scored separately unless pilot wishes fly direct competition big airplanes Although IMAC rules award points aircraft performance wow appeal except Freestyle event feel judges swayed bigger models sometimes award higher scores same maneuvers flown identically smaller models So Minimac class does away such potential size bias scoring pilots like Brad Rodney prefer smaller airplanes may also wish compete class should perfect Kits Minmac sized models available sources few latest include Ace R/C Staudacher new Extra 300 kits Great Planes House Balsa Engines will power kits plentiful affordable Hotly awaitedand probably available time read thisis new 53 four-stroke Futaba-YS Expected have power output well above other fourstroke engines size YS 53 utilizes trademark YS pressurized fuel system supercharging via large volume pressurized intake chamber engine reportedly weighs 16 ounces 450 grams includes muffler adjustable connecting pipe Street price will approximately $200 Up Down Elevator Ive experiences models just didnt behave well pulling pushing elevator has become much prevalent recent years because increase number models use dual servos elevator actuation advantages using two servos elevator control obvious servo needs have enough torque operate elevator half 120 sized models upward need use much-more-powerful servo needed smaller airplanes cases can use smaller faster servos pairs enjoy ample torque better speed comparable weight compared giant servos dual servos also very good chance can save airplane servos fails flight installation elevator servos tail airplane yields simple installation thats easy inspect maintain plus direct control rod installation things favoring dual-servo activation elevator halves its easy see such popular option Still plenty potential flies dual-servo ointment Lets take look some areas need watch out As single-servo installations driving both elevator halves must make sure elevator halves centered exactly same have exactly same throw both directions elevator travel challenging enough just servo depending radio use may challenging dual servos almost case Ive worked airplane problems pushes pulls culprit different centering halves different throw either up down elevator directions both single-servo setup thing can take granted servo throw same both elevator halves leaves servo horn control horn pushrod length three variables need inspected adjusted dual-servo setup several variables Primary fact servos may moving same distance other true whether using identical servos measure actual throw several servos will find variations usually very small radio cannot accommodate dual elevator channels have no way match throws would use dual-servo setup radio didnt have ability adjust centering travel servo independently Luckily fly Airtronics systems problem Other top systems can also handle dual-channel situation properly would use type systems dual elevator servoswith exception say radio handles dual-channel situation properly mean can control aspects servo travel independently still having both elevator servos respond together stick trimmer mixer outputs know lot using single receiver channel operate dual elevator servos utilizing Y hamess problem servos move identical fashion have two perfectly matched servos rotates opposite direction relation elevator servos mounted standard positions have never seen such setup yield equal throw elevators have used space Ill continue discussion later have used dual-servo single-channel setup aftermarket reversers Id like hear about experience Have fun fly safely r 108 Model Aviation INE MODELS Plans Division 15127 N 100th Way Scottsdale AZ 85260