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as all the cars bunch together from the impact.
DCC and QARC only.
Flanges:
When a train enters a curve, the flanges on the wheels ride up on
the inside of the rail and squeal. Recreate this squealing effect by pressing
and releasing the Squealing Brakes/Flanges button quickly and repeatedly
as necessary.
DCC and QARC only.
Steam Pop-off:
If there is too much steam pressure in the boiler, special
pop-off valves, or safeties, on top of the engine release the excess pressure
in a fury of hissing steam that often will blow for 30’ or more above the
locomotive. This happens most often when the engine is sitting still, since
the fire continues to build up steam that is not used. The Quantum Pop Off
sound comes on for random lengths at random times in Neutral.
Steam Water Injector:
The water used to make steam is replaced by
water injectors at high pressure, to overcome the elevated pressure in the
boiler. The sound of rushing water and steam hiss ends with a distinctive
valve shut off. This sound comes on for random lengths of time and occurs
randomly when the locomotive is in Neutral.
Steam Boiler Blow Down:
As water evaporates, minerals and other
residues settle to the bottom of the boiler. The fireman opens a valve to
vent this material through a large pipe under the side of the cab onto the
ground. Quantum’s Blow Down sound occurs at random in Neutral for
varying lengths of time.