S4
NOTE:
Before attaching any of the servo output arms, turn on your radio and check that all of the primary control functions and trims are set to neutral. Pay
special attention to the throttle/pitch channel where the stick has to be positioned manually unless your transmitter has a digital or graphical display of
the output. If you have this feature, set the stick to give a read out of 50%. If you do not have this feature you will need to set the stick to the neutral
position by eye. If you also have hovering pitch and throttle trim knobs, these should also be set to their mid positions to give equal amounts of
+/- output. Once you have done this, all of the servos should be at their mid points and have equal amounts of rotation in both directions.
Initial set up can now begin.
Choose the thickest output arms/discs that you have, and that can accommodate the joint balls at a radius of 13.5mm each.
For the left/right servos try the disc/arm on the output shaft until you find a position where a suitably spaced pair of holes sits closest to the centre line
of the servo case. For the front servo, imagine a rectangle whose four corners sit on the four joint balls making up this linkage. The holes in the disc/arm
should sit on the line that forms the short end of this rectangle. Please refer to the diagram again for clarification.
If you cannot find an exact position use the one nearest and make minor adjustments with the appropriate sub trim and not the main trim.
Remove the disc/arms one at a time and noting which side the joint balls fit, attach them as shown. Also note the use of spacers under the joint balls
fitted to the left/right servo discs/arms.
Cut off the excess material or unused arms as shown and refit the finished disk/arm in its original position. Fix securely with the screw that came with
the servo.
STEP 6-6 SERVO ARM PREPARATION AND INSTALLATION
27mm
90º
90º
M2x8 Socket Head Bolt
Jointball
M2 Nut
M2x8 Socket Head Bolt
Jointball
M2 Nut
Right Servo
Left Servo
IMPORTANT:
Be sure that all arms are 90º and parallel to each other like shown in the diagrams above.
1. Attach the jointball to the servo horns on the left,right,rear,throttle (ensure the carburator is at 50% opened, if not
adjust the throttle arm on the carburator) and tail servo as shown in the diagram above.
2. Mount the servo horns firmly with the screw included in the servo. Use threadlock on servos with metal gears to secure
the screws.
3. Be sure to connect the servos according your transmitter manual.
4. Make sure all servo horns are positioned as shown above. If the servo horn is not parallel as shown, minor centering
adjustments can be made using the radio´s subtrim.
USE THREADLOCK
90º
Rear Servo
