User manual PowerBox Mercury SRS with OLDED Screen and GPS
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The positional values vary according to your linkages, and must therefore be set indi-
vidually to suit the specic model. It is important to ensure that the wheel doors do
not jam mechanically. The times stated in our example are also just an illustration, and
need to be set to suit your preference.
The timing of the tasks does not need to coincide with the task numbering. For examp-
le: it is permissible for Task 5 to occur before Task 2.
Our example clearly shows how the function is built up. Additional movements or in-
tervals between opening or closing the wheel doors can be inserted at any time; all you
have to do is set up a new free task. This freedom is intended to remove all restrictions
which might otherwise prevent the model’s undercarriage retracting and extending in
the exact scale manner.
Caution: once you have completed the set-up procedure, it is important to check
all the model’s control surface systems with the undercarriage both retracted and
extended. For example, if you were accidentally to assign the GEAR UP – OUTPUT
OFF function to the elevator output, then your model would surely be wrecked im-
mediately after take-off!
Important: the rst START POSITION in the UP » DOWN sequence must always
coincide with the last STOP POSITION in the DOWN » UP sequence. This means:
intermediate steps can be made individually, but the nal task must always take
the servo back to its starting position!
Caution: if you notice unusual or unexpected servo movements in the sequence,
you need to check your tasks!
- GEAR UP – OUTPUT OFF:
The door sequencer of the Mercury SRS includes a further auxiliary function which
makes it possible to switch off a channel when the undercarriage is retracted. For
example, the nosewheel should not deect in parallel with the rudder when the un-
dercarriage is in its retracted state, as this could jam the system mechanically; this
function solves the problem.
At this menu point simply enter the output which you wish to switch off as soon as
the undercarriage is retracted. When you conrm your choice by pressing the SET
button, the unit stores the position of the nosewheel which it is to adopt when the
wheels are raised.