Conversion of American Flyer/LTI Geep Loco
 to Lionel TrainMaster LCRU

Using the Lionel Trainmaster allows a collector operator to enjoy the advantages of new technology and still keep compatibility with the older legacy systems. A TMCC converted engine can still run on a conventional non TMCC layout as it would before the conversion. This is not possible with a DCC system

Modification for DC Motor operation

The Lionel LCRU (LiontechControlReceiverUnit) was designed to use AC motors, but by adding a rectifier as shown in the drawing, you can use it to power DC can motors and have full functionality.

Explanation of  the Modification for Two Rail operation

Note there is a 100 micro Henry choke in the return power lead. This choke is necessary when using  two rail track  to ensure that the signal is not degraded when the engine is turned around on the track .(Lionel track uses the signal on both outside rails) With a two rail system when you turn an engine on the track it effectively shorts out the RF signal to the LCRU in the engine. This is why you put the RF choke in the common lead. The RF choke looks like an open circuit to the RF and it is not shorted out. Leaving it out, the engine will run fine one direction but lousy if turned around.  The Headlights are wired for directional control. 

   LCRU Wiring Diagram AF LTI Geep with Directional Head Light

These pictures show an American Flyer LTI GP-7 
Click on the Pictures to ENLARGE

Here is the Lionel LCRU Installed in a AF-LTI GP-7.  It all fits nicely with the only modification to the LCRU being the Heat-sink
The Antenna is mounted in the roof of the Shell with Double sided Tape
The Original Heat-sink is replaced with one made from a piece of 5/16x1/16 aluminum formed as shown. It is mounted to the frame with  two 4-40 screws. The program switch is mounted  as shown in the lower right of the picture
This shows the RF choke mounted with a cable clamp and the Rectifier Diode

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