1930 Timken Roller Bearing Company
NO. 1111 4-8-4
THE TIMKEN "Four Aces" was built for the purpose of
demonstrating the importance and use of roller bearings on all
axle journals of steam locomotives. Rather than rebuild an existing
engine, a new one was built so that it could be impartially tested
by any interested railroads. Fifty manufacturers of locomotive
appliances co-operated with Timken in the project, with a 4-8-4
type being chosen, this to have a top speed of 85 miles an hour.
Upon completion the 1111 was first operated
in freight service on the New York Central. From there it was
tried in both passenger and freight service on thirteen other
roads. In these trials some well-known trains such as the C. &
O.'s Sportsman and the New Haven's Merchants Limited were hauled
by the 1111. On the Pennsylvania it handled twelve passenger cars
up the Allegheny mountain grade without a helper and even saved
three minutes on the standard schedule. It fully justified the
claims for roller bearings and after these service tests totaling
88,992 miles were completed by August, 1931, it was delivered
to the Northern Pacific. After this road had tried it, the Four
Aces was purchased by them in February, 1933. Renumbered the 2626,
it was used for passenger traffic on Trains 1 and 2 between Seattle
and Yakima and later between Seattle and Missoula, Montana.
Builder-American Locomotive Co.
Cylinders-27" x 30"
Weight, total-711,500 lb.
Steam Pressure-250 lb.
Tractive Effort-63,700 lb.
N.P. R.R. Class-A1
Don't Make 'Em | Contents Page