Re: C-25 width
Regarding the five C-25 equivalent engines: These were not exact
copies of CR #103, and that engine was twice severely modified by
the D&RG, first with a an extended cab and later with a near
standard cab moved back to enclose the backhead. The last is the
familiar version that we see modeled. BLW practice with OF 2-8-0s
was to place the cab forward, with the backhead extending about
18" behind the cab wall, and this was done on all six as built.
There were also differences in the auxiliaries, particularly air
tank locations. I believe that erection drawings of the two
Shannon Arizona engines, and the Q&TL version, are available
from the DeGolyer Library Special Collections at Southern
Regarding OF engine counterweights: BLW practice prior to about
1902 was to use simple cranks with conventional counterweights on
the drivers. The K-27s were built during a transition period,
with counterweights on both the driver centers and the cranks.
After about 1904, the full counterweight was put on the cranks.
The dated decision is recorded in a BLW Drawing Office "Bible"
specifying design standards, and currently in the Stanford
University Library's Special Collections. As the K-28s
demonstrate, ALCo continued to put side rod counterweights on the
driver centers, and only provided crank counterweights for the
Total North American production of outside framed 2-8-0s ran to
about 300 engines, almost all exported. One large scale user was
the 30" gauge FC Antofagasta and Bolivia, which once had 25 each
from BLW and ALCo, plus plate framed versions from British
On 5/25/2019 1:17 AM, roundbell via Groups.Io wrote: