User Guide

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 also 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, included on page 10.
9
Synchronization of Exhaust Chuff
For optical coupler (item #585) synchronization:
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.
see page 11 for picture of installation.
For extra 2 and 3 pin ultra-miniature connectors, see item's 757 and 758.
They are listed under Accessory Items / Connectors.
WHITE
RED
GREEN
BLACK
Switch 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.
Item #707, as shown, is a subminiature micro switch for this purpose, in lieu of using
optics (0.32"L X 0.1" W X 0.26" H).
DO NOT use a leaf switch to the chassis (quartering lobe) this will damage the sound unit!
Optical pattern
mounted on
drive axle
apply a thin layer of
glue on each side to
prevent oil from
contaminating the
optical pattern.
Optical Coupler (hi-lighted for ease of
viewing) mounted 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.
Focus Distance
1/8" - 3/16"