Control Line Scale EVER SINCE flew Tigercat 1974 World Championships Lakehurst NJ Ive quite few letters asking about electrical control system used units currently being used competition heres list positions taken models using control system 4th place 1974 World Champs 9th place 1974 World Champs 1st place 1974 Nats Stand-off Scale 2nd place1974 Nats Scale 1st place 1975 Nats Scale 2nd place1975 Nats Scale After flying CL Scale several years figured dependable method control various options de sired flying model So came up idea might work transmit electrical impulses through two existing flying lines insulated flying lines presented idea several peo ple produced radio-control equipment told did feel feasible idea feeling idea would work being stubborn person na ture still pursued Mike Stoft Right Administering last-minute adjust ment Curtiss P-40 control-line pit area 74 Nab Thomas Fluker Left Author uses X-mitter RF section removed send electrical impulses plane insulated lines Operates various extras Note proportional slide levers toggle switch Mccullough pic Below The unit consists X-mitter decoder battery box switch harness two servos Optional nicads upper left corner Lines shown Mccullough pic 1973 Nats Oshkosh WI talked good friend Ken Wil son Shawnee KS authorized service center EK-logictrol got Ken listen ideas take existing radio control unit remove RF section unit produces actual radio signals wanted Ken take out RF just transmit electrical impulses radio impulses down through two insulated flying lines im pulses would received decoder mounted model decoder has same function receiver RC model would able use regular servos radio control unit Ken became very interested saw no reason shouldnt work returning Nats faced problem finding heavy enough insulated flying lines after checking around youd surprised what person can find got material lines made set sent off Ken could start work unit Approximately two months later re ceived first unit Ken greatjust what wanted Theunit con sisted 6-channel transmitter can attached belt Five 6 chan nels fully proportional other words can have amount flaps needed completely up full down flaps adjusting slide lever transmitter proper position sixth channel toggle switch gives full travel servo either direc tion no stopping between usu ally used lowering raising landing gear decoder mounted model powered its own set batteries also power servos servos standard EK-logictrol servos battery packs airborne unit can vary roughly 1 -oz size 3 oz-size hope future able get weighing around om plete airborne unit would add de pending number servos about 4 ozs 12 ozs model feel very reasonable amount additional weight extra performance would gain advantages unit using line tensions source power maneuver flying op erations means dont have worry about constant line tension As case setting throttle would just set proper amount throttle needed transmitter will keep position no matter line ten sion might change Remember everything proportional ali channels can operate simultane ously following set procedure address 118 Wheeler St North Mankato MN 56001 26 Model Aviation