In the fall of 2001, I was contacted by Jim Murray,
owner of Murry Design and Manufacturing and the MDM Locomotive Works, maker
of inch and one half scale models of EMD Geeps and F units. Jim told
me that he had a request from a customer for a model of the 5623 and that
he needed a few photos and a couple of dimensions. The model was
completed in February, 2002 and the following photos present the finished
product. The 1-1/2" scale means that 1-1/2" on the model equals 1
foot on the original. It is built to 7-1/2" track gauge. Their
web site at MDM Locomotive Works
has more detail photos of their products. By the way, this is not
a commerical for MDM, the only thing I got out of this is the pleasure
of helping a little and seeing the finished model.