2
TrainSpeed Operating Instructions
TrainSpeed 4 will give you a reasonably accurate scale speed
indication for your trains at four points along your model
railroad. The maximum speed measurable is 999 Mph (or
Kph) and the minimum speed measurable is 1 Mph (or Kph).
It can be used to match speeds in MU lashups or be used to
ensure that track speed limits are obeyed during operating
sessions (beware that our younger model railroaders may use
it to see just how fast they can go!).
Installation
The unit is designed to be mounted to your control panel or
behind the façade of the layout. A rectangular hole needs to
be made in either the façade or the control panel along with
four #4 screw clearance holes. If you are using a clear
plexiglass control panel then you can mount the unit behind a
clear window instead of cutting a hole in the panel. The
layout for these holes are shown on the included full sized drill
template.
The unit may be configured to measure the train’s speed over
1/25, 1/50, 1/100 or 1/200 of a scale mile (or Km). The sensor
spacing for most scales can be found in following tables
(table 1 for miles and table 2 for Km).
For example, in N scale if you use the 1/100 scale mile
interval, you need to place the sensors 3.96 inches apart. If
your particular scale is not listed you need to calculate the
proper interval by dividing 63360 (the number of inches in a
mile) by your scale’s ratio, and then dividing that result by the
interval chosen (25, 50, 100 or 200). The unit is configured
for 1/100 of a mile at the factory.