Standard Steam Sound
IN LOCOMOTIVE DELUXE STEAM SOUND
batteries can also be used. When connecting the battery (DC) power leads be absolutely certain
that wires connect to the proper DC input leads. IF THESE CONNECTIONS ARE
REVERSED YOU WILL DAMAGE THE SOUND SYSTEM. This is not covered under any
warranty and will be obvious to us when returned for repair (tracks are burned through on the
circuit board and parts can be totally destroyed). Damage resulting from loose wire or other
metal making contact with the circuit board or its components is also not covered under warranty.
These sound systems are thoroughly tested and inspected before packing to insure proper
function. There is a minimum charge of $75.00 (plus s/i, PA residents require sales tax) for
non-warranty repair so please be careful when making these power connections.
for various track power by
Version 1.1
CAUTION-THIS DEVICE CAN BE DAMAGED BY STATIC DISCHARGE. PLEASE EXERCISE CARE DURING
INSTALLATION TO AVOID THIS POSSIBILITY. DISCHARGE YOURSELF TO AN ELECTRICAL GROUND (OUTLET
COVER SCREW) BEFORE REMOVING THIS DEVICE FROM ITS ANTI-STATIC BAG. PLEASE READ INSTRUCTION
SHEET COMPLETELY BEFORE ATTEMPTING TO INSTALL AND OPERATE THIS PRODUCT. Save the anti-static bag
for possible reuse of storing or shipping the sound unit!
OVERVIEW: This device is an electronic, self contained, polyphonic sound system for installation
in model steam locomotives that are designed to operate with conventional DC track power,
digital (DCC), other types of command control systems including radio with either track or battery
power. The sound system is limited to "O" scale and larger gauge models and may also require
the use of a trailing car. An on/off switch (Item #524, not included) must be used to turn the
sound unit on and off in some applications. If there is sufficient input power, the three audio
amplifiers can each produce 1.1 watts of audio power which is in excess of what most small
speakers can handle. The speaker impedance must be 8 ohms or higher. Sound volume, treble,
and bass is adjustable for each audio channel. Refer to our catalog for available speakers.
Sounds produced include user controlled steam whistle and bell, random air pumps, periodic
safety valve pressure release, cylinder blow down and steam exhaust chuff sound automatically
adjusted to speed and load conditions. Exhaust chuff must be synchronized to actual piston
movement, drive wheel or axle rotation.
This sound system, when used with conventional DC track power, requires the use of our
LocoMatic™ Controller (Item 755) to operate the whistle, bell, cylinder blow down, main sounds
on/off and other lighting features. DCC and other command control operators can use remote
functions on their systems to activate these functions. Radio control with fixed track power or on
board batteries would be similar to DCC installations.
SOUND INFORMATION:
AIR PUMPS are needed to maintain air pressure in the train and locomotive braking systems.
These pumps must run periodically as pressure drops, due to brake applications or through
normal leakage. To simulate this action, AIR PUMP sounds are generated at random intervals
when the sound system is on and there is no power to the track / motor. AIR PUMP sounds will
also be heard when power is first applied to the sound system. This will give you an indication
that the system is in fact functioning.
BLOWERS are used on a steam locomotive to maintain fire box draft when the locomotive is not
in motion. BLOWER sound will be generated whenever the locomotive has stopped moving and
there is no power to the track / motor.
SAFETY VALVE will vent if steam pressure in the locomotive boiler becomes excessive. The
sound system will produce a SAFETY VALVE release at random intervals whenever the blowers
are on and steam is not otherwise being used.
CYLINDER BLOW DOWN is required to remove condensate that accumulates in the cylinders
when a locomotive has been at rest. This condensate must be exhausted from the cylinders
prior to the pistons being powered by steam or there can be damage to the cylinders.
CYLINDER BLOW DOWN sounds will be generated by the sound system when requested. With
the LocoMatic™ Controller you depress and release the ALT & F3 button to turn on the
CYLINDER BLOW DOWN and then again depress and release the button to turn the CYLINDER
BLOW DOWN off. A remote function control does not require the PUSH ON - PUSH OFF
sequence. The CYLINDER BLOW DOWN will automatically turn off after the locomotive starts
running and an appropriate number of exhaust chuffs have occurred with the ball cocks in the
open position or the engine starts moving too fast. During this motion, the Cylinder Blow Down
can always be turned off. After the engine is brought to rest, several seconds must elapse before
this function can be turned back on. After all, condensation takes a while to occur, so you
wouldn't open the ball cocks to blow the cylinder's out right after stopping.
WHISTLE sound is controlled by the WHISTLE button on the LocoMatic™ Controller or by
remote function, dependent upon the type of installation. The WHISTLE will sound as long you
are holding the control on. This will allow you to actually play the sound as on a real locomotive.
DCC and similar systems will have a sound delay equivalent to system response time.
BELL sound is controlled by the BELL button on the LocoMatic™ Controller or by remote
function, dependent upon the type of installation. When BELL sound is requested the sound
system will ring the BELL continuously. After a ring or two, the BELL can be turned off and will
stop at the end of a ring. With the LocoMatic™ Controller you depress and release the BELL
button to turn on the BELL and then again depress and release the button to turn the BELL off.
Remote function control does not require the PUSH ON - PUSH OFF sequence.
EXHAUST CHUFF is the most notable sound of a steam locomotive in motion. The sound is the
result of the used steam from the cylinders being vented through the stack. Each cylinder will
exhaust twice during each drive wheel revolution and since most steam locomotives have two
cylinders, the exhaust should chuff four times for each drive wheel revolution. EXHAUST CHUFF
sounds should vary from a very slow chuff rate to an almost continuous roar at high speed.
EXHAUST CHUFF should also vary as to the load on the locomotive with a heavy train making a
INSTALLATION INSTRUCTIONS: The sound system consists of three printed circuit boards,
and multiple mating connectors with wires. A CHOKE (item 702 or 703 depending on motor
power requirements), not included, is required for DC track power installations. All installations
requre a synchronization device which is not included. Some manufacturers have this built into
the engine, others do not. We offer item 583 (infra-red optics) and 584 (reed sw/magnets) for this
function.
Refer to the drawing on page 3 to familiarize yourself with the connections required to the sound
boards. These are required for all installations. Then refer to the specific instruction sheets for
the type of installation you intend to make. Before proceeding with the installation read the
balance of the instructions carefully so you will be completely familiar with what is required and
what sounds you should hear. The sound boards also have appropriate silk screen labeling to
further clarify the functions of controls and connections.
The circuit boards should be mounted in appropriate locations. The main board is usually in the
locomotive tender along with the volume/treble/bass board so that the volume and other controls
are accessible either through the frame or via a hatch or a hole in the tender body shell. Be
certain that the components on the circuit board do not come in contact with any metal objects
as such contact can destroy the sound system. The tender speaker, which contains all sounds,
should be mounted as per available space bearing in mind that sound reproduction is enhanced
when a speaker is properly enclosed and baffled (the tender will serve as a proper baffle if near
or fully enclosed).
If a DC locomotive is not moving, there is no track power, therefore to have sound it is necessary
to have a separate power supply for the sound system. For in locomotive use, this separate
supply is a battery. We suggest the use of 6 AA batteries in series (7.2 volts for rechargeable's or
9 volts for standard batteries) to maximize volume potential and battery life. Rechargeable
1
louder exhaust. This sound system will vary the EXHAUST CHUFF sound either by an OPTICAL
INPUT (Item #583) or optional switch contacts (item #584), with actual movement of the drive
wheels or other axles. Additionally, the EXHAUST CHUFF is dynamic and it's volume will
increase above normal during acceleration and will be lower when decelerating.
LIGHTING EFFECTS: Automatic headlight, backup, marker, cab lighting with motor polarity.
Override control is available to DC operators via the LocoMatic™ Controller (#755). After any
manual lighting operation is selected, automatic lighting may be accomplished via the Alt-Bell
buttons. Depressing this set returns the lighting back to automatic operation.
SPEAKER MOUNTING: The main speaker (connected to SPKR on the main board) should be
mounted so that the sound can actually "get out" of the locomotive. A hole in the floor of the
tender is acceptable but the front of the coal bunker or even through a simulated coal load may
be a better choice as the sound can exit forward or upward rather than down toward the track. In
some cases, particularly in the larger gauges, mounting a speaker inside the front of the boiler
with a open stack can enhance the sound. Enclosing the speaker in a chamber will also enhance
sound reproduction. A very simple enclosure can be made with a tube. It is usually best to seal
the end of the tube, so there are no air passages to the rear of the speaker, thus creating a
sound chamber. By carefully sealing all openings it may be possible to use the entire tender
body shell as a sound chamber thereby not requiring a tube type enclosure. A simple wall behind
the speaker may be all that is possible or perhaps all that is needed.
The other two speakers should be mounted in the main boiler if possible. Speaker 1 (connected
to SPKR1 on the Engine board), from the Engine board, contains the whistle and front exhaust
sounds. Speaker 2 (connected to SPKR2 on the Engine board) contains the Bell and rear
exhaust sounds (in compound engines). Other sounds are also produced from all of the
speakers. Since these are mounted in the boiler, round speakers are the best selection with
proper baffles. Do not mount the speakers without a proper baffle since that will produce an
inferior sound.
Speakers can be attached with double sided tape, with glue or with "hot melt". Enclosures can
be made with plastic, wood, card stock or even metal if so desired. Medicine bottles make
excellent sound chamber enclosures for round speaker types. Attachment with "hot melt" is
advantageous as the "hot melt" can be used as a gap filler when creating an enclosure.
Speaker enclosure is an art and experimentation is definitely in order for your installation so as
to gain the maximum benefit of the superb sound quality available in this sound system.
GENERAL OPERATING INFORMATION:
VOLUME ADJUSTMENTS: should be set as desired for your application. These volume controls
do not allow for the sound volume to go completely off, they merely give a range for the
individual volumes. Vol1 controls SPKR1, Vol2 - SPKR2, Vol3 - SPKR. Again, SPKR1 and
SPKR2 are the speakers connected to the Engine board. The main tender speaker is labeled
SPKR on the main board and is controlled by Vol3. Please remember that the amplifier can
produce more power than a small speaker can handle and that the sound will be louder if the
speaker is properly enclosed and baffled. If you are using batteries, the louder the volume the
shorter the battery life.
TREBLE / BASS CONTROLS Each audio channel has it's independent Treble and Bass
controls. These are true Treble and Bass controls and not just tone type controls. If full boost is
used, it may be necessary to reduce the volume on that channel to prevent overdrive of the
amplifier and speaker. Again, the relationships are the same as the volume controls. Vol1
(Volume control 1) - BASS1 (Bass control 1) - Trbl1 (Treble control 1) all control SPKR1. The
others follow the same nomenclature.
MISC: Another feature incorporated in this sound system is the ability to turn all sounds off,
leaving only the Whistle and Bell to operate. This can be done with the LocoMatic™ Controller
by using the ALT & F4 button and is a push on / push off function. Other operators can access
this with using function inputs.
Speaker enclosure: Normally the shell of a
tender sealed to the base will form an enclosure.
However, if this is not ideal, a pill bottle with it's
end cut, as shown, off makes a nice enclosure as
well. Be sure to seal the entire edge around the
speaker to the bottle. The wires come through a
small notch placed in the lip so that they do not
become pinched from the speaker.
SPECIFIC INSTRUCTION SHEETS
Common Whistle signals
Common wiring practices
Wires with a "•" ARE a connection!
Wires crossing over (without a "•") are not a connection.
Therefore DO NOT CONNECT them!
SOUND
INDICATION
short ........................ apply brakes, stop
2-long .......................release brakes, proceed
long, 3-short ............ flagman protect rear of train
4 or 5 long ................recall flagman
2-short ..................... acknowledgment
3-short ......................back up movement
4-short ..................... call for signals
short, long ................inspect train line for leak or brakes sticking
2-long, short ............ approaching meet or wait point
2-long, short, long .... approaching grade crossings
continuous long ....... approaching stations or junctions
successive shorts .... alarm for something on track
2
PAGE
3
4
5
6
7
8
9
10
INSTALLATION TYPE
overall wiring
Conventional DC
DCC Receiver
Radio Receiver
Aristocraft Receiver
Synchronization Installation
Synchronization Patterns
blank
246 W. Main St.
Leola, PA 17540
(717) 661-7041
www.dallee.com
Common connections between boards & components for All installations.
Marker Lamps (forward)
#384 (1.5v)
100 ohms
Firebox #384
(3 in series)
All of the following connections are required for any type of installation.
Speaker connections:
SPKR1 - Front driver
speaker
SPKR2 - Rear driver
speaker
Each red & gray wire
pair connect to each
speaker.
Cab
#756
Gray
Red
White
Black
Red
White
Black
Red
Gray
Red
Gray
Red
Gray
Red
Gray
Red
White
Black
Red
Engine Board
PWR connections
AUD connections
SYNC connections
* The "SYNC" connections (blue highlighted connector) red and gray wires get connected
together making a single wire between the Main Board and Engine Board. This is an exception
to all other two wire connectors.
W
B
R
Headlight
#756 (5v)
For simplicity in drawing and viewing, the following connections, which are outlined in colored
boxes for easier identification, need to be connected from the Main board to the Engine board.
The red wire goes to the mating red wire and the gray wire to the mating gray wire between both
boards. Do not reverse the colors and do not plug them into the wrong locations.
The yellow framed connection "SYNC1" go to the optical pickup sensor.
SYNC1 wire
Optical Sensor
White......................... White
Black ......................... Black & Green
Red............................ Red
*
Lighting: Red wire is a regulated +5 volts which is common
to all lamps. All outputs are pulled to ground ("-") to turn the
lamps or LED's on. Outputs are capable of 120 milliamps.
Exceeding the current rating will damage the output driver.
The optical sensor needs to be mounted so that the front focal distance is 1/8" to 1/4"
maximum. With the sound system "ON", the optics can be easily aligned since an exhaust chuff
can be heard from any white (reflection) to black (no reflection) transistion. See page 8 for
further details.
Speaker connections:
Marker Lamps (reverse)
#384 (1.5v) 100 ohms
SPKR - main speaker
Red & gray wire pair connect to
tender speaker.
Backup light
#756 (5v)
Definitions of connections to be shown on later pages:
Red
Black
White
White
Black
Red
G
R
CONN2:
1 - RED .............DCC rail 1 .......... also AC input 1
2 - GRAY...........DCC rail 2 .......... also AC input 2
G
R
Gray
Red
G
R
G
R
G
R
G
R
Main Board
CONN1:
1 - RED .............Motor 1
2 - BLACK.........Motor 2
3 - WHITE .........track RF input (for DC operators only)
unlabeled, battery select jumper:
on - rechargeable batteries......... off - standard batteries
G
R
G
R
batt:
1 - RED .............DC power "+"
2 - GRAY...........DC power "–"
G
R
dccF1
1 - Whistle (red)
2 - Bell (gray)
SW1:
1 - RED .............switch common
2 - GRAY...........switch open
dccF2
1 - Cylinder Blow Down (red)
2 - no function (gray)
CONN3 - this connector mates to the Volume/Treble/Bass board (not shown) cable.
3
DC track power installation using batteries & DALLEE controller #755
Connect all wires between boards as shown on page 3.
Place the Engine Board in an appropriate location in the engine. Also place the choke in the engine as shown. It is important to make all of the previous
connections from the right rail to move to the side after the choke. While the drawing shows the motor, previously installed lighting, and a smoke unit, your
engine may not contain all of them. You may also wish to change the factory installed lighting to that supplied from the sound cards. Failure to connect
other power drawing items to the other side of the choke will result in the LocoMatic™ Controller to not be able to operate the sound system properly.
White
Black
Red
Engine Board
White
CHOKE *
DC
motor
lighting
circuits
Right Rail
pickup
Smoke
Unit
Left Rail
pickup
*Larger motors require a larger capacity choke.
Chokes:
Item 702 - 1.5 ampere loads
Item 703 - 5.0 ampere loads
Red
Black
White
Gray
White
The Aux Tender lamp is controlled via the
LocoMatic™ Controller's "Aux2" function
(Cntrl-Aux buttons together).
ON / OFF switch
Lighted car / other engines used in consist preparation. You will know if this is
necessary by placing the locomotive / lighted cars on the track and then attempting to
blow the Whistle or operate the BELL. If they do not operate with the other items on
the track then you need to do the following. We suggest doing this to all lighted cars or
engines used in the same consist since it lets the signal stay at it's maximum level.
#566 SPST switch.
Switch shown in the OFF position.
Main Board
as explained on page 3, connected on/off
switch to SW1 red and gray wires (see pg6 for
a better drawing of this connection).
CHOKE PACK
for additional chokes order:
Item 702 for up to 1.5 ampere load
Item 703 for up to 5.0 ampere load
batt: Make sure the RED wire goes to the
battery "+" and the GRAY wire goes to the
battery "-". Failure to do so may create severe
damage to the board as well as the batteries
and is not covered under warranty!
Right Rail
pickup
Battery power: When using standard, non-rechargeable, battery power you must make sure
that the jumper is removed (located to the right of the "batt" label and shown in RED
above) must not exceed 24 volts DC. Use a string of 6 or more AA or AAA batteries (24
volt DC maximum input). Life depends on volume settings. Typical operation is in excess of
12 hours using good AA batteries.
Rechargeable battery power: use 6, 1.2volt 700ma, rechargeable batteries (item #648).
Place the jumper onto the selector located above and highlighted in RED. This will allow the
batteries to charge whenever the track voltage is higher than the battery voltage. The
batteries will also charge when the sound system "SW1" is in the off position. Full charge
will result when power is applied for 14 hours. Item #652 is a 6 pack AA battery holder.
either rail may
be used. Right /
Left only used
for reference.
CHOKE
looks like coil of wire with a
lead on each end
LOAD
Lighting load, other locomotive in
consist, or other type circuitry
drawing off of track power. As
shown one lead needs to be
disconnected from the rail and a
"CHOKE" needs to be placed in
series with the load. In most cases
the 1.5 ampere (#702) will handle
the load.
Formerly right
rail pickup
Left Rail
Pickup
See pg 8 for optional lighting boards.
4
DCC receiver installation
Connect all wires between boards as shown on page 3. Place the Engine Board in an appropriate location in the engine. Place the Main Board and
Volume/Treble/Bass board in the tender body at appropriate locations as well as the DCC decoder. Be careful, as always not to short anything to the boards or wires.
Regulated 5 volt lighting can be either connected to the sound boards or to a function output from the decoder. You can use the 5 volt lamps with their + lead
connected to the red +5 volt regulated output from the sound card and then connect the other end of the light bulb (or LED with appropriate limiting resistor) to the
appropriate function on the decoder. The headlight, marker lights, and cab lights will operate automatically with the sound system. Whenever motor power is
detected, the cab light will turn off and the appropriate headlight and marker lights will illuminate. So, you have your choice, either operate them with the decoder or
leave them connected to the sound system for automatic operation. The flickering fire box, if desired, can be either lamps in series or a 5 volt lamp painted red. Light
bulbs will function better than LED's in this application.
White
Black
Red
Engine Board
White
M
DCC Receiver
Black
The white wire from CONN1 on the Engine
Board and Main Board do not get connected.
Either remove from connector housing, cut,
or tape end.
receiver motor leads (Orange / Gray is standard
practice).
Gray
Make sure that your receiver is operating in the same
step mode as the transmitter !!
Red
Black
White
Track power input to decoder (Red / Black is standard
practice).
DCC
track power input
To F1, F2,
F3, and F4
as shown
The batt jumper (outlined in RED)
should not be put in place.
Function outputs to appropriate Main Board inputs as
shown on lower left of drawing.
do not connect batt red wire! Tape end, cut,
or remove from housing of connector.
Main Board
Some DCC systems may require the addition of another capacitor to stabilize the regulator
which will show in the lights flickering (if using the 5v lighting supplied). If this is experienced,
add a 470mfd to 1000mfd, 25 volt, capacitor as shown. The RED side of the capacitor is the "+"
lead, the GRAY wire is the "-" lead.
+
#566 SPST switch.
F1
F2
F3
F4
ON / OFF
switch
Switch shown in the OFF position.
If you want the sound system on at all times, connect the on/off switch wires (SW1) together or
use a function with a relay to provide remote switch operation.
Connect to appropriate
functions from the
decoder.
dccF1
1 - Whistle (red)
2 - Bell (gray)
dccF2
1 - Cylinder Blow Down (red)
2 - no function (gray)
5
Radio Receiver installation - utilizing battery power
Connect all wires between boards as shown on page 3. Place the Engine Board in an appropriate location in the engine. Place the Main Board and Volume/Treble/Bass
board in the tender body at appropriate locations as well as the receiver board. Be careful, as always not to short anything to the boards or wires.
Regulated 5 volt lighting can be either connected to the sound boards or to a function output from the receiver as long as the receiver provides for an open collector
type output. If so, you can use the 5 volt lamps with their + lead connected to the red +5 volt regulated output from the sound card and then connect the other end of the
light bulb (or LED with appropriate limiting resistor) to the appropriate function on the decoder. The headlight, marker lights, and cab lights will operate automatically
with the sound system. Whenever motor power is detected, the cab light will turn off and the appropriate headlight and marker lights will illuminate. So, you have your
choice, either operate them with the decoder or leave them connected to the sound system for automatic operation. The flickering fire box, if desired, can be either
lamps in series or a 5 volt lamp painted red. Light bulbs will function better than LED's in this application.
White
Black
Red
Engine Board
White
M
Radio Receiver
Black
The white wire from CONN1 on the Engine
Board and Main Board do not get connected.
Either remove from connector housing, cut,
or tape end.
receiver motor leads
Red
Black
White
Battery Power
input
Battery power input to receiver
The batt jumper (outlined in RED)
should not be put in place.
To F1, F2,
F3, and F4
as shown
connect function outputs to appropriate Main Board
inputs as shown on lower left of drawing.
Main Board
Battery input power can be any battery voltage from 7.2 to 24 volts DC. This voltage must be
permitted by the battery operated receiver as well.
batt: Make sure the RED wire goes to the battery "+" and the GRAY wire goes to the battery "-"
connections. Failure to do so may create severe damage to the board as well as the batteries
and is not covered under warranty!
#566 SPST switch.
F1
F2
F3
F4
ON / OFF
switch
Switch shown in the OFF position.
If you are using a separate power switch from the battery or if you want the sound system on at
all times battery power is present, merely connect the on/off switch wires from SW1 together.
Connect to appropriate
functions from the receiver.
dccF1
1 - Whistle (red)
2 - Bell (gray)
dccF2
1 - Cylinder Blow Down (red)
2 - Simple / Compound (gray)
6
Aristocraft/Crest #CRE-55492 receiver installation using fixed track power and Aristocraft relay board (ART-5490)
for sound function operation.
White
Black
Red
Engine Board
Connect all wires between boards as shown on page 3. Place the Engine Board in an appropriate location in the engine. Place the Main Board and
Volume/Treble/Bass board in the tender body at appropriate locations. Also place the Aristocraft radio receiver boards in their appropriate locations or where space
permits. Be careful, as always not to short anything to the boards or wires.
The headlight, marker lights, and cab lights will operate automatically with the sound system or you can choose to utilize the lighting from the Aristocraft receiver.
Whenever motor power is detected, the cab light will turn off and the appropriate headlight and marker lights will illuminate. So, you have your choice, either
operate them with the receiver or leave them connected to the sound system for automatic operation. The flickering fire box, if desired, can be either lamps in
series or a 5 volt lamp painted red. Light bulbs will function better than LED's in this application.
White
M
Aristocraft Radio Receiver
Black
The white wire from CONN1 on the Engine
Board and Main Board do not get connected.
Either remove from connector housing, cut,
or tape end.
receiver motor leads
Red
Black
White
fixed track power
input - AC or DC
Track power input to receiver
cable to
ART-5490
as shown
The batt jumper (outlined in RED)
should not be put in place.
connect function outputs to appropriate Main Board
inputs as shown on lower left of drawing.
ON / OFF switch
Main Board
#566 SPST switch.
Track Power.
Switch shown in the OFF position.
F1 F2 F3
different colors
utilized for easier
wiring/viewing.
Input voltage of 12 to 24 volts DC or AC.
This voltage must be permitted by the
track operated receiver as well.
Connect to the track input from each truck.
If this is an Aristocraft receiver in a
non-equipped plug in, then connect to the
same wires as the receiver board (wire #1
& #7, blue & yellow)
If you want the sound system on at all times,
connect the on/off switch wires (SW1) together.
Left Rail pickup
Black —› Yellow
Motor
Brown —› White
Motor
Blue
—› Red
Right Rail pickup Black —› Blue
Lef t / right rail will reverse in the opposite pickup
truck. This drawing was made from their SD45.
Connections as shown:
Sound Function
Aristocraft Power Truck wire pickup help guide.
Terminal connection
wire color
receiver color
Relay/Keypad
F1 - Whistle......................... A
F2 - Bell................................C
F3 - Cylinder Blow Down......D
F4 - no function, tape off or cut off
you may elect to connect all, some, or none.
Cable plugs into
receiver board
7
Aristocraft relay board
(ART-5490)
Synchronization of Exhaust Chuff
Switch Synchronization:
For optical coupler (item #585) synchronization:
1 - connect Common (C) of the switch to the White wire from the SYNC input.
2 - connect Normally Open (NO) of the switch to the Black wire from the SYNC input.
Switch closure should occur on peaks of quartering lobes. We recommend using optics since
they can switch much faster, don't bounce, and do not interfere with the mechanical operation of
the axle.
1 ......connect Black and Green optical pickup wires together, this then connects to the Black wire
from the SYNC input.
2......connect Red optical pickup wire to the Red wire from the SYNC input.
3 ......connect White optical pickup wire to the White wire from the SYNC input.
You can also use other switch type contacts but DO NOT use a leaf switch to the chassis
(quartering lobe) this will damage the sound unit!
Engine Board
WHITE
GREEN
BLACK
Engine Board
WHITE
lower right corner
RED
Switch
It is not necessary to use the black / white stripe pattern, anything that will come in and out of
focus to the optical reader will work! So, engines with cams installed or a piece of plastruct
rectangular tubing cut and glued to the axle may also work with proper alignment. Remember,
some paints and other type markers will still reflect the infr-red light. So, just because it's black
doesn't guarantee that it will work. The optical coupler comes with laser printed stripes.
BLACK
RED
No connection.
Axle synchronization can also be accomplished by gluing one or two magnets onto any axle.
The reed switch is supplied with two wires and encased in heatshrink tubing. These connect to
the White and Black wires from the "SYNC" connector as shown above.
Focus Distance
1/8" - 3/16"
To create one chuff per revolution, which most will find creates the sound effect desired, merely
glue one magnet onto the axle. For two chuff's per revolution, the second magnet needs to be
glued onto the axle in the opposite position. Most trailing wheel sets are 1/2 the diameter of the
main drivers, so two magnets would yield 4 chuffs per revolution of the main drivers.
These magnets are very small and measure only 0.1" wide x 0.2" long x 0.045" thick.
Two magnets and one reed switch assembly are included in this package, item #584.
Optical pattern
mounted on
drive axle
Item #584 Reed Switch
Optical Sync used on a tender axle.
Optical Coupler (hi-lighted for ease of viewing) glued to
frame 3/16" from optical end to pattern. In this
installation, the end mounting ears had to be trimmed
to obtain clearance to the drive gear box. When doing
so care must be used to not damage the optics.
Magnet's
apply a thin layer of glue on each
side to prevent oil from
contaminating the optical pattern.
Synchronized Chuff Patterns for AXLE READ, 4 chuffs per revolution. Mount optics inside
chassis and read driver axle. This is the ultimate location, when the drivers slip on the
rails the sound follows! Common axle diameters shown on page 9. Select appropriate one
(or make your own) and cut out. The long black strip shows total circumference of the axle
leaving 4 white stripes. The chuff starts on the black stripe and ends at the end of the
white stripe. For correct synchronization, place the center of the black stripe facing the
optics when a piston (main rod) is at the center of it's travel. If you prefer to paint the
stripes, be sure that the black paint is a flat finish. A gloss or semi-gloss will reflect as
white / bare metal. You can also read the high lobes of an existing cam.
Extra wire harnesses:
2pin - item 222
3pin - item 223
8
Synchronized Chuff Patterns for RIM READING for 4 chuffs per revolution.
Synchronized Chuff Patterns for Reading an Axle
6.5mm
20.6
7mm
22.14
9/32"
22.44
7.5mm
23.6
5/16"
25.0
8mm
25.1
6.5mm
20.6
7mm
22.14
9/32"
22.44
7.5mm
23.6
5/16"
25.0
8mm
25.1
Cut pattern that suits wheel diameter and cut large enough to cover inside flange. Mount pattern
on inside flange (clearing center axle from pattern). Trim excess beyond flange. Align optics to
read pattern. Any external light shining on the optical sense end will cause improper readings.
RIM READING for 2 chuffs per revolution
RIM READ
- shown mounted
inside truck.
Remember to shield the optic from stray light entering the pickup end. If light does stike the
sensor it can overcome the infra-red reflection creating the loss of exhaust chuff synchronization.
9
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