History: The M-1
was a single prototype model 4-8-2 that was designed and produced by Juniata
in 1923. This model was locomotive 4700, shop construction No. 3819. After
two years of testing and road trials, the M-1 was approved for fleet construction.
M-1 designers, W. F. Kiesel, Jr. and J. T. Wallis transplanted features
from the I-1s decapods. They allowed for a larger combustion chamber,
but left most of the other features unchanged. Other items borrowed from
the I-1s included the following: guides, crossheads, and various machinery
parts. Some special features of the M-1's were: pilot deck-mounted air
resevoir tank, 27" x 30" cylinders, 72-inch drivers, medium sized tenders,
250 pounds of boiler pressure, KW type trailing truck, Belpaire firebox,
small steel cab, a total weight of 385,000 pounds, and could haul a load
of up to 64,550 pounds.
The original engine was built with a very small tender and no mechanical
stoker. It was hand fired, which led to great difficulties in handling
this massive machine. Stokers and larger tenders were soon implemented.
Mountains were the first classes of superheated power to drop the "s"
from class designation. All engines were superheated by this time, so
the "s" was no longer needed.
"Mountains" are so-named because they were considered big and powerful
for such work when first designed during World War I. These were considered
to be the best steam locomotives the railroad ever owned; they replaced
the Mikados, Decapods, and Santa Fe's. They became known as "the hallmark
of Pennsy fast freight service".
Complete Kit and Accessories: The locomotive
and tender complete kit has all of the parts to build a working model. You may
wish to add your own details or purchase our "Super Detail Kit" if available.
Some models have an optional painted engineer and fireman, smoke unit kit and
other assemblies available as optional equipment to compliment your kit-building
Kit Components and Replacement Parts:
The following parts are listed in order to identify parts in your kit or to
replace parts that have been lost, damaged or simply worn out. This is
not a complete list of all of the individual parts available for this model
- please call Bowser with your specific requirements
if you cannot find the parts you need. You may also use our on-line
catalog to find parts by description. Please note that part numbers
with a price of "Call Us" may be part of an assembly and may not be available
as a separate purchase item.