Installing infrared sensors 

Follow these steps for the easiest way of installing sensors.  
The advantages are perfect vertical installation of sensor and easy removal of sensor from track.
Shown is a Ninco track but  the same technique can be used for all plastic tracks.
On HO tracks the sensor will be installed between the rail and the slot.

#1  Put a big blob of hot glue on the underside of the track to build up the track thickness.
	#2 Let it cool for several hours then drill the hole for the sensor using a 1/8" drill bit.
#3 Clean the edge of hole with a bigger drill bit.
	#4 It will  look like this On HO tracks the sensor is mounted between the rail and the slot
#5  Insert Sensor. It will fit snugly into the hole
	#6 Done!! You don't need to  glue it in place.
#7 Completed   Secure the sensor cable under the table so weight of cable does not pull the sensors out of the holes.