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able to observe operations on parts of the

layout otherwise inaccessible unless a

tethered throttle was put down

momentarily. This is helpful when checking

for faults or observing the passage of trains

over a point on the track where

derailments are taking place so a repair can

be made. In short, wireless operation is the

ultimate in flexibility of train control and

can increase the enjoyment of layout

operation considerably.

Wireless throttles require power and

batteries are the obvious choice. The

Dynamis throttle accepts four AAA

batteries that last some time, especially if

operators remember to switch the throttle

off during breaks and after the operating

session has concluded. However, when

planning an operating session, remember to

have a good supply of fresh batteries to

hand because you can guarantee that at

least one set will die during an evening of

operation. The Dynamis handset will take

rechargeable batteries, so have a ‘spent

battery’ container to hand near the layout

during operating sessions if using

rechargeable batteries.

THE CONTROLLER

(THROTTLE)

Only one controller can be supported by

the entry level set even through more than

one train can be set moving at a time.

Control will be restricted to one train even

if two or more are running on separate

circuits. The Dynamis system stores up to

40 locomotive addresses in a ‘roster’ stack;

the numbers being recorded as locomotives

are called up. There is the option to enter

identification names in Dynamis for easy

locomotive identification. Switching from

loco to loco is simple when the roster

stack holds the various locomotives’

identity. The Pro Box enhances much of

this, but more on that later!

The Dynamis handset is quite a sophisticated

beast by DCC standards; incorporating

ergonomic design, a joystick controller and a

large, clear LCD screen that is back-lit. A

great deal of information on the control of a

train, including a sliding scale and numeric

read-out for locomotive speed steps is

displayed. Despite the high level of

sophistication, the handsets are intuitive to

use and provides one button, one touch

control for all the important features such as

double heading (consisting) and turnout

control selection. Newcomers to DCC

should find the handsets enjoyable to use.

The use of extensive menus for operational

features is becoming less of a feature in

modern throttles and single button presses

for turnout (accessory) decoder control,

lights and so on makes it easy to use and

closer to the controls of full-size

locomotives (except turnout control, of

course, which is a convenient addition for

railway modelling). There is a menu in the

throttle for entering data such a locomotive

identities and that is simple to navigate too.

The joystick provides locomotive control,

push it forward and the locomotive

accelerates according to the decoder

settings. Pull the joystick back and speed is

lost. The handset supports 28 and 128

speed steps, the latter is better for finer

levels of locomotive control. To select from

the locomotive stack in one motion, push

the joystick to one side or the other to

scroll through the saved locomotive

identities. Choosing options, be it entering a

locomotive or accessory decoder address

or a saved locomotive address, is simple

through a single button press for enter as

indicated by a tick on the LCD screen.

IR RECEIVERS

Locating the Command Station correctly

with the receiver mounted on top when

using the entry level set is very important

to ensure there is a clear line of sight

between Dynamis handset and the receiver.

There is always the chance of loosing

contact between receiver and handset, even

allowing for the signal bouncing off light

coloured walls. When signal loss does

occur, the selected locomotive will run as if

a tethered throttle had been unplugged - it

will run in accordance to the last change on

the throttle. To avoid problems should

contact be lost for more than a very short

period of time, the system has a ‘Track

Timeout’ that is a timed delay between the

loss contact and the track power being cut.

This ensures that only small interruptions

will spoil the enjoyment of using the

system. The timeout period can be adjusted

to suit individual requirements.

To prevent such interruptions, locate

receivers as high up the wall of the layout

room as you can and install additional

receivers using the IR Expansion box and

cables should there be any risk of loosing

contact due to a corner location, layout

back scene or other obstruction. The Pro

Box package includes the IR Expansion box

and an additional IR receiver.

LIMITATIONS OF THE ENTRY-

LEVEL SET:

The Dynamis entry-level set does not have a

programming or service track output, (‘Pro

Box’ provides all DCC programming modes

and readout required for advanced CV

programming). Address programming is

through the main track output. While this is

not a problem for small layouts operating only

a handful of locomotives using short 2-digit

addresses, the modeller should be aware that

any and all locomotive decoders in contact

with track power at the time a programming

instruction with a 4-digit address is broadcast

will receive and act upon the instruction.

Consequently, all but the intended recipient

of the programming instruction should be

removed from the layout. This avoids having a

fleet of locos all taking the same 4-digit

address with all the inconvenience that can

cause when a new model is introduced! To

avoid the inconvenience of removing all

locomotives from the layout, consider adding

an isolated siding or programming track to

the layout for Ops Programming. A double

pole, double throw switch should be

included in the power leads circuit between

the layout and Dynamis so power can be

switched to the track to create a

programming zone isolated from the rest of

the layout. There is no longer any need to

remove every locomotive from the track to

programme a new 4-digit address or other

CV change to a new locomotive or decoder.

2: The Bachmann Dynamis entry-level

system is a 2.5 amp set which includes a

command station, receiver, hand held

wireless throttle and wall mount power

supply. This article looks at the

fundamentals of Dynamis and how to put it

to work.

3: The Pro Box expands the entry-level

Dynamis system with advanced features

including multiple train control and

advanced programming using a service

track. The expansion set comes with the

Pro Box itself, an additional IR Receiver,

cables and an adapter for expanding the IR

receiver network.

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