The following examples illustrate the correct procedure for the Servo-Match
function:
a) Fine-tuning multiple servos to operate on a single control surface; in
this case the aileron of the right-hand wing.
- Disconnect the linkages to the - as yet unmatched - servos, to avoid them
being subjected to severe forces during the adjustment procedure.
- Set up one servo (generally the inboard one – Servo 1) in mechanical terms,
using the transmitter if necessary; continue adjusting until the centre point
and the maximum end-points are exactly as required.
- Now access the Servo-Matching menu and select the servo to be matched.
In our example this would be Output B and Servo 2.
- Initialise Output B as described above.
- Move the cursor to START SERVOMATCHING » but do not press the SET
button at this stage!
- At the transmitter, move the aileron stick to the position to be adjusted,
then press the SET button.
- You can now release the aileron stick: the PowerBox maintains this positi-
on. You now have both hands free, and can adjust the position accurately
with one hand, using buttons I and II, whilst checking the length (matching)
of the disconnected ball-link at the horn with the other hand.
- Press the SET button again to conclude this adjustment.
- Complete the set-up procedure for the centre position and both end-points
before re-connecting the servo linkage.
- If you need to carry out further adjustments to another end-point or centre
position, move the aileron stick in the desired direction again, and press
the SET button again to start the procedure.
- Repeat the procedure with all the servos connected to the same control
surface.
Note: if your model is fitted with very large ailerons, it can be advan-
tageous not to match the servos with 100% accuracy. If the servos are
precisely matched, gearbox play may allow aileron flutter to develop. You
can eliminate this risk as follows: first match the servos exactly to each
other, and then press buttons I or II two or three times to reduce the ef-
fect of lost motion in the servo gears to a controlled extent.
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