GMC Rapido F7B, Operating Manual, Page: 14 / 19

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“Full Throttle” is even neater when you throttle down, as it allows you to simulate
“coasting” which is such an important part of running a real train. When you press
F3 again you turn off “Full Throttle” and the engine will accelerate or decelerate to
whatever speed step your throttle happens to be on. For realism it’s a good idea to
take note of what speed step your throttle was on when you turned on “Full Throttle”
and be back at that speed step when you turn “Full Throttle” off. Otherwise your
F7B/F9B may fly like a twin-prop plane.
F4 Dynamic Brake
Press F4 to get dynamic brake sounds. Now listen, we know how modellers think,
and while we have included the sound, CN units DIDN’T HAVE DYNAMIC BRAKES!
Look on the roof. See a single 48” fan by itself? No? That means it DOESN’T HAVE
DYNAMIC BRAKES! We just want to get that point across. If you have a CN engine
and you press F4, you have Green Cooties.
F8 Startup/Mute/Shutdown
F8 toggles the primary locomotive sounds on and off. If you’re not moving, you’ll
get a nice startup sequence of the 567C prime mover. If your locomotive is already
moving, it’ll just go straight to the appropriate throttle step.
If you have a DCC system that only allows eight functions, you can remap the functions
following the guidelines in the ESU LokSound manual, which can be downloaded
from the support section of our web site. Or you can upgrade to a newer DCC
system, which may be less stressful.
F9 Front Headlights
F10 Rear Headlights
Each end of your B unit is equipped with a headlight. These were used primarily
around yards and when reversing but have been known to be left on in error during
regular service. Since CN and CP oriented their units differently, it’s much easier
for us to just pair these functions together to avoid getting the complaints like “My
headlights are reversed - the front is the rear and the rear is the front”. So just play
with these functions and make your own conclusions.
F11 Brake
F11 works just like the brakes on a real engine. Press F11 and you put on the brakes.
Turn off F11 and the brakes come off, so you start moving again.
F12 Doppler Horn – Slow
F16 Doppler Horn – Fast
Having a Doppler horn on a B unit really doesn’t make much sense. Then again,
neither do we most of the time. But if you’re the type that’s running a silent A unit,
just like we previously mentioned with the bell and the horn, then we’ve included the
Doppler here for you to make it appear as though your A-unit is sound equipped.
Neat trick, eh? Oh, and there’s both slow and fast versions of the Doppler.