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The track "Code" , in this instance Code 80 or code 55 for N Gauge track, refers
to the height of the rail in 1/1000's of an inch, so Code 55 track has a rail
that is .055" high and code 80 track has a rail that is .080" high. So how does
that effect you? Well, there are several considerations.
Code 80 track has been the long term standard for N gauge and was the
only option for factory made track for many years. It is the most widely
distributed size of N gauge track, providing the most readily available options
of special track sections such as switches, grade crossings etc. and because of
the high production and use of the same design efforts over a long period of
time it is a bit less costly than Code 55 track. Older N gauge locomotives and
cars had wheels with larger flanges (to help prevent derailing) that will not
work with Code 55 track, because the flanges bottom out on the ties. The major
downside to Code 80 track is that the rail height is a bit out of proportion to
N scale (1:160). The .080" rail represents a full sized rail of 12.8" height
which is larger than most any real railroad track. Code 55 track with .055" rail
represents real rail of 8.8" height which is much closer to real track
proportions.
That being said, most modelers find the Code 80 track acceptable in
appearance with their N scale equipment. Some modelers, who are more concerned
with achieving a more accurate and precise scale (1:160) representation of
reality will choose Code 55 track. In larger layouts both tracks could be used,
with Code 80 on the main line and Code 55 on the branch lines, yards, and
customer sidings.
My personal opinion is that Code 80 N gauge track is more practical for
most modelers and looks fine, particularly when the entire layout is established
with roadbed, track ballast and scenery.
Guide created: 09/27/07 (updated 10/03/08)
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