There were several variations of the Baldwin DR-6-4-2000 during its
construction run from the mid-1940s through the late 1940s. In total there were not many actual locomotive built but the design had a wide range of carbodies from the "Baby Face" to the "Sharknose" and "Dual Cab." The DR-6-4-2000 would be the very last passenger cab unit Baldwin would offer. The company was never very successful in that particular market
anyway (it was more than 10 years behind the Electro-Motive Division in
offering a passenger model) and instead decided to focus its efforts on freight locomotives. The DR-6-4-2000 primarily resembled models being offered by EMD with comparable horsepower, length, and the A1A-A1A truck
design. Unfortunately for Baldwin its last passenger
locomotive sold less than a tenth of the units that EMD outshopped for
its late E series models. Today, there are no DR-6-4-2000s known to be preserved (nor any of Baldwin's rare passenger models).
Pennsylvania "Sharknose" DR-6-4-2000 #5771 is seen here pulling what appears to be a commuter run, likely taken during the 1950s. The PRR purchased nearly all of this design ever built; 18 A units and 9 B units in 1948.
The original version of the Baldwin DR-6-4-2000 was introduced in 1945. Using two VO 6c SC model prime movers, which could produce 2,000 horsepower, three such models were built through the summer of 1946. They utilized an A1A-A1A truck setup (meaning the two outside axles on each truck
were powered while the center axle was not) and featured Baldwin's
ubiquitous "Baby Face" carbody design. Additionally, the locomotive
could produce 76,200 pounds of starting tractive effort and 28,500
pounds continuous. The oddest carbody design, at least for American
railroads, among the DR-6-4-2000 types was the dual cab. Six were built
for the Central Railroad of New Jersey from 1946 through 1948. Listed
as a DRX-6-4-2000 "Double Cab," aside from the design having a cab on
each end to eliminate the need to turn the locomotive between runs and
its only difference from other versions of the model was that it featured Baldwin's 606NA model prime mover.
The final "Baby Face" version of the DR-6-4-2000 also featured the 606NA prime mover and only a few were built in the second half of 1948, two for the Gulf, Mobile & Ohio and three for Ferrocarriles Nacionales de México (two of which were original demonstrators). The absolute final version of the Baldwin DR-6-4-2000 was shrouded in the famous "Sharknose" carbody. Its only difference from the previous version was that it featured Baldwin's latest 606SC prime mover. Unfortunately, this final version sold poorly (although it did sell the most of any single variant) as well as only the Pennsylvania Railroad purchased it, 18 A units and 9 B units. Internal components for all of the DR-6-4-2000 variants were outsourced to Westinghouse Electric, a company Baldwin had collaborated with for decades.
A Baldwin company photo of brand new Gulf, Mobile & Ohio DR-6-4-2000 #280 taken in 1947, wearing the earlier "Baby Face" carbody. The GM&O owned just two of these locomotives, #280-281.
The classification system Baldwin used for its early diesel designs was a
mess to try and decode but once it is explained is fairly simple to
understand. The system is based from the Whyte Notation that classified steam locomotives. As an example using the DR-6-4-2000 the "DR" referred to Diesel Road
unit; the first 6 regarded six total axles; the second number, 4, was
the designation of four powered traction motors; and 2,000 was simply
the horsepower rating. Many times the classification would be shortened
for simplicity such as DR-6-4-20. Given the fact that by the late 1940s EMD simply had the market cornered on passenger models,
and diesel locomotives in general, most of the railroads that
ultimately purchased the DR-6-4-2000 variants did not use them long in
revenue service. The locomotives just were not as reliable and easy to
maintain as EMDs and most were traded in or sold by the 1960s. Lastly, for more information about the DR-6-4-2000s and all Baldwin cab unit models please refer to the chart below.
Baldwin DR-6-4-2000 Production Roster
Gulf, Mobile & Ohio
5770B-5786B (Evens, Bs)
Wharton & Northern Railroad (CNJ)
Another Baldwin company photo shows Wharton & Northern (a subsidiary of Central Railroad of New Jersey) DRX-6-4-2000 #2000 in November of 1946. This was a customized version of the model built with dual cabs. The CNJ ultimately purchased six examples by 1948.
For more information on Baldwin locomotives the book by the same name, a Brian Solomon title, provides an in-depth history of the company from its earliest days beginning in the 1930s to its final years constructing diesels during the mid-20th century. It 160 pages in length and, as with every Solomon book, offers a rich collection of large, sharp photos to enjoy. Another title of interest is Vintage Diesel Locomotives by noted author and historian Mike Schafer. This one has been out for several years now and is a paperback title but highlights several classic models from the major builders of the era such as Electro-Motive, Baldwin, and the American Locomotive Company.