Pennsylvania No. 3397

Pennsylvania No. 3397
PRR Class CC1s No. 3397
Technical specifications
Serial number(s)	37674
Manufacturer(s)	Baldwin Locomotive Works
Build date	April 1912
Total produced	1
Classification	CC1s
Wheel arrangement	0-8-8-0
Dia. of Drivers	56"
Weight	408,700 Lbs. (Engine) 186,400 Lbs. (Tender Loaded), 595,100 Lbs. Total
Rail gauge	4 ft 8+1⁄2 in (1,435 mm)
Valve gear	Walschaerts
Valves	14"
Cylinders	Four: Mallet compound
Boiler type	Belpaire
Boiler diameter	84" (First Ring) 85 3/4" (Second) 87.5" (Third)
Boiler pressure	205 psi (1.41 MPa)
Superheater	Schmidt
Bore stroke	High-pressure cylinder: 25 in × 30 in (635 mm × 762 mm) Low-pressure cylinder: 39 in × 30 in (991 mm × 762 mm)
Firegrate area	78 sq ft (7.2 m2)
Fuel type	Coal
Fuel capacity	14 Tons Coal 9,000 Gallons Water
Heating area	988 sq ft (91.8 m2)
Performance figures
Tractive effort	82,702 Lbs.
Axle load	54,800 Lbs. Max
Service information
Running numbers	3397
Disposition details
Withdrawn	March 1931
Number scrapped	By 1932

The Pennsylvania Railroad class CC1s consisted of a single experimental 0-8-8-0 steam locomotive built by Baldwin Locomotive Works in April 1912 for Yard hump service on the Pennsy

Design History

(Coming soon)

Revenue Service and Retirement

Not very much was known of #3397's operating history, but as it was completed in April 1912, the sole unit was assigned road number #3397 and placed in service at the PRR Pitcairn yard in Pitcairn, Pennsylvania, near Pittsburgh. A subsequent class, the CC2s, was constructed beginning in 1919 after the tests conducted with this locomotive. When the ten CC2s locomotives were constructed by the Baldwin Locomotive Works, they became most ideal for the Yard hump services as they performed better with Higher tractive effort than the older Prototype it inspired. As years later, the Pennsy was finding little advantage to articulated steam locomotives and the earlier Mallets like #3397 were replaced by regular rigid-frame heavy power like the I1sa Decapods. Not too long into the early stages of the Great Depression, the PRR Retired the locomotive from full Service in March 1931 where it was also Scrapped that same Year.

Trivia

• PRR #3397 was the Longest lived of the three of the Experimental Articulated Steam Locomotives the Pennsy constructed in the 1910's, as it ended service after nearly Nineteen years of Service.
• The Boiler used for the locomotive was rather undersized for the engine's wheelbases, as the Boiler was identified to be 41' 8.56" in length although for the era it was average sized.