Sutton's Locomotive Workshop British Railways Sulzer Type 2 Operating Manual - page 19
Special control features
We have included several special control features which you may use to modify the
way the sound samples play. These may be used individually or in combination to
provide greater realism and thus enhanced pleasure. You do not
need
to employ them
as your model (as supplied) will simulate normal driving completely automatically,
but we strongly recommend you at least try them. These features effectively render
the old, cumbersome, ‘manual notching’ techniques obsolete.
MULTIPLE STARTING OPTIONS: The sound is switched on/off and the engine started
and stopped with the F1 button. Starting a real Class 24 from cold first requires the
lubricating oil to be pressurised and the coolant circulated. An electric pump, called
a ‘combined pump set’, performs these functions. Your decoder has the combined
pump set sounds assigned to the F14 button, which will operate prototypically with
the engine sounds off. This allows you to choose when to use it and the required
duration. You can then choose a ‘cold’ start, where the engine fires after a bit of
cranking, or a quicker, ‘warm’ start where the engine fires immediately.
Cold start: Engage F5 button before using F1 to start the engine.
Warm start: Disengage F5 before using F1 to start the engine.
In both cases, after the engine has started engage or disengage F5 depending on
the driving style you wish to use (see ‘light engine mode’, overleaf). To simulate a
failed start in either case above, operate F1 then disengage it immediately.
Throttle response: As supplied, the decoder will output the sounds of a Class 24
with a loaded train. After running the combined pump set and starting up, the loco
will stand with the diesel engine ticking over at idle. The sounds will respond to the
throttle control in the following way:
From standstill, increase to Speed Step 1 and the brakes will release, before the
engine will power-up slightly to get the loco moving. With increasing Speed Steps,
further ramp-ups in engine power will be initiated until the final high-speed running
sounds begin. The transition points between power bands will depend upon your
actual model. The sounds will spool-down at similar points on deceleration.
Throttle ‘plus’: A new feature, unique to ZIMO, has been incorporated.
Open the throttle gently... the engine note will rise and fall appropriately and the
acceleration will simulate that of a heavy train.
Open the throttle more quickly... The engine will ramp-up to full power and the rate
of acceleration will be increased accordingly.
With the throttle fully opened... (then reduced if required) the loco will accelerate
three times more quickly than normal.
Never before has a sound project simulated the variety of driving styles so accurately.
change your DCC driving technique but has the feeling of ‘putting you straight in
the driver’s seat’! Here’s how it works:
For optimum control and convenience, the feature needs to be assigned to a
non-latching (or momentary) F-button. On many non-European designed DCC
controllers, the only momentary button is F2. Some, like NCE PowerCab have a
designated separate key which operates F2 from a dedicated Horn/Whistle button.
The sound project has been constructed to take these limitations into account, so the
Horn/Whistle button becomes the Brake Key. (Don’t worry, the horn will not blow
when you brake!). Other brands, such Lenz, allow you select the type of operation -
latching or momentary - for each F-button, for each locomotive.
With the locomotive running at mid-speed, reduce the throttle (speed step)
setting to zero. The loco will slowly begin to decelerate and the engine sounds will
spool down directly to idle. Next, make a brake application with F2. A short ‘dab’
will produce a short air release sound and a modest increase in deceleration. You
can think of this as ‘speed trimming’. This can be repeated if required, and is entirely
prototypical in operation. A longer application will produce a longer air release
sound and a slightly greater rate of deceleration.
Holding the F2 button down will produce a long air release sound and the loco
will perform an emergency stop. In other words, brake force increases with time
and maximum deceleration rate is achieved immediately prior to coming to a halt.
Automatic brake squeal will accompany the final moments before halting. The button
can also be used to simulate ‘brake dump’ testing when at a stand.
The brake may also be operated during deceleration between different speeds, for
example approaching a speed restriction. In this case, reduce the throttle to required
lower setting. The engine sound will change according to the features described
earlier, so may result in a different power sound rather than engine idle (but you
may wish to force coast using F6). To increase the rate of deceleration, use the F2
brake as before, and the speed of the loco will be ‘trimmed’ to exactly the selected
speed and not below. So there are now no excuses for a signal passed at danger or
exceeding a speed restriction! Remember also that prior to first use of the day, and
at anytime deemed necessary for safety, the effectiveness of a locomotive’s brakes
would be tested.
If F2 is left on a ‘latched’ button, and left on by mistake, the engine sounds will
respond to the use of the throttle, but the brake release sound will not play (as brakes
have not been released) and the loco will not move since it is being ‘held’ by the
brakes. This is a bit like trying to drive off in your car with the hand brake still applied!
Please note that real locomotives do not ‘stop dead’ even during an emergency stop.
To reflect this, an emergency stop will be reasonably abrupt but not sudden. If your
DCC controller is equipped with a ‘panic button’ to avert imminent catastrophe, this
will still operate as usual, and will have more immediate effect than the brake button.
SLW Class 24 Operating Manual
Page 37
Page 36
SLW Class 24 Operating Manual