Necessary Freight Cars #1: NP 40' Combo door boxcar
During the past several years, Ted Cullotta wrote several articles for Railroad Model Craftsman titled Essential Freight Cars, about the needed freight cars for the typical post-war, transition era modeler. So I have borrowed Ted's byline to start a new series of posts on the freight cars needed to model the Camas Prairie Railroad in 1967.
Ted's excellent articles were focused on the prototype car information, then a well described process for modeling the car in HO scale. My posts won't be how-to articles per se, but will be general information about the prototype car and the basics of how to model it.
In the mid-1950's, Northern Pacific Railway found they needed more specialized boxcars than the ubiquitous 40 foot, 6 foot wide door boxcars that had been the mainstay of the car fleet since the mid 1930's.
In 1958, NP began building boxcars that could be used to load grain but also be loaded by forklift with shipments such as lumber or paper. The result was a 40 foot combination door car, that included a 6 foot sliding door and a 8 foot plug door. With the plug door closed, the car could be easily coopered with a grain door for grain loading. With the plug door open, the 14 foot opening would make loading lumber by forklift possible.