User manual FUTABA 4EX

[. . . ] 4EX INSTRUCTION MANUAL for Futaba 4EX 4-channel, FM radio control system for aircraft Futaba Corporation Technical updates available at: http://www. futaba-rc. com Entire Contents © Copyright 2005 1M23N15601 TABLE OF CONTENTS Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Contents and specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The arrow will indicate the condition of the servo (normal or reversed). In the diagram channel 1 (aileron) is "normal" (not reversed). Use the SELECT key to display other channels to be reversed. 10 E. P. A End Point Adjustment The EPA function is designed to "fine tune" the servo throws in cases where changing the pushrod hookup will not achieve the correct throw. The pushrods should first be connected to the servo arms and control horns so the correct, or near correct control surface throw will be achieved. THEN the EPAs may be used to make small changes in the servo throw until the desired control throw is achieved. The control throws should be set up so that the "end points" are as near to 100% as possible. If the EPA values must be set below 70% or above 120% to get the desired throw, you should strongly consider changing the pushrod connections so the values can be set closer to 100%. (When the EPA is set to 100% the maximum servo throw for channels 1, 2, 3 & 4 is approximately 40 °) at 100% To set the end points: 1-4ch; 40° 1. Enter the programming mode and use the MODE key to access the "EPA" screen. To change the RIGHT aileron throw move the aileron stick to the right, then push the DATA 40-140% 1-4ch; 55° INPUT lever up or down to change the value and the throw. Move the stick to the left and use the DATA INPUT lever to change the LEFT aileron throw. Use the SELECT key to display the other channels and set the other end points. Notice that moving the stick from one end to the other changes the value displayed and the position of the arrow for that "end" of the control input. Trim Settings/Trim Memory Function There are four trim levers ("trims") on the front of the transmitter. The intended use of the trims is to make small servo adjustments, in flight, to get the model properly "trimmed" (so it will fly straight-and-level). Operate the controls to make sure the servos respond in the correct direction. Use the reversing function to reverse any servos necessary. Place the servo arms on the servos so they are perpendicular to the pushrods (see page 5). It is okay to cut off any unused servo arms. Connect the pushrods to the control surfaces. Adjust the length of the pushrods until the control surfaces are centered when the servos are centered. To adjust the trim settings: Once the servos and control surfaces have been connected and the control throws have been set using the end points, get the model airborne. Adjust the trims as necessary to get the model to fly straight-and-level. [. . . ] FUTM5692 NR-4K 4. 8 Volt, 250 mAh receiver battery . . . . . . . . FUTM1210 NR-4B 4. 8 Volt, 1, 000 mAh receiver battery . . . . . FUTM1380 NR-4F 4. 8 Volt, 1, 500 mAh receiver battery. . . . . . FUTM1285 AEC-3 8" [200mm] Servo Extension . . . . . . . . . . . . . . . . . [. . . ]