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ACF (?) numbered the designs of the underframe from the first
year of production - That's what
I understood, at least. So ACF Type-21 1921, ACF Type-27, 1927,
and so on. I think the model
is an ACF Type-11. It may also be an ARA Type II, as you
describe - but photos shows ARA III
The (?) means I don't know if these types are ACF builder
designations, or railfan designations.
On 9/6/2021 3:07 PM, Chris Barkan wrote:
correction/clarification to this thread title; I think that the
F&C kit is intended to represent a Type II, as in roman
numeral "two", not a Type 11, as in "eleven".
For those unfamiliar with the early tank car designations, I
have excerpted several explanatory sentences from Tom
Dalrymple's chapter on tank cars in the 1997 Car &
Locomotive Cyclopedia. Tom's history was in turn derived from
Frank Heller's 1970 ASME paper entitled "Evolution of Tank
Car Design Through Engineering" (In 1973 Heller
republished the paper re-titled as "A history of tank cars"
in the The Bulletin of the National Railway Historical Society,
Vol. 38, No.1 pp 17-35, 51.)
"In 1903, the
Master Car Builders' Association, composed of mechanical
representatives of the railroads, and a representative of
Standard Oil formed a Tank Car Committee and drafted the
first recommended practices for the design and
construction of tank cars. ... All cars built prior to 1903
were designated Class I and cars built thereafter
were designated Class II"
the Master Car Builders' Association began to develop
standards that sought to match the specifications of tank
cars to the commodities that they were authorized to
transport. Class I cars were restricted to non-flammable,
non-hazardous commodities. Class II tank cars could no
longer be built, and two new classes III and IV were
In 1927, when the ICC assumed authority for tank car
specifications for hazardous commodities, "...ARA III
became ICC 103, ARA IV became ICC 104, etc."