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Sacramento Northern 146

SN 146 outside the museum shop in July 2013. SN 146 outside the museum shop in July 2013.


Sacramento Northern 146 is a General Electric built 44-ton Diesel electric locomotive. It has two Caterpillar Diesel engines that drive electric generators that power four traction motors.


Locomotive 146 was built new for the Sacramento Northern by General Electric in November 1946. 146 is in Sacramento Northern class 142. It was one of seven 44-ton locomotives purchased by the Sacramento Northern after the California Public Utilities Commission adopted regulations making the continued operation of the third rail north of Sacramento no longer feasible. The reason to purchase 44-ton locomotives was the 90,000-pound rule in the 1937 labor contract with enginemen. This clause permitted railroads to operate locomotives below this weight without a fireman. The locomotive was retired by the Sacramento Northern on September 21, 1971. It was sold to Chrome Crankshaft, a locomotive broker. It was resold to the Northwest Oklahoma Railroad where it became their number 1 in 1974. Northwest Oklahoma Railroad sold 146 to the Feather River Railroad Society in 1996. Locomotive 146 was acquired by the Western Railway Museum from the Feather River Railroad Society on May 9, 2005.

  • Vintage Photo: Vintage Photo
  • Vintage Caption: SN 146 in Sacramento Yard Cira 1952. (I. J. Brain photo, BAERA No. 18752)
  • Owners: Sacramento Northern 146. Northwest Oklahoma Railroad 1.
  • Technical Data: Builder, General Electric Company, Erie Works, November 1946, construction number 28336. Tractive effort, 26,400 pounds. Minimum curve radius, 50 foot. Weight on drivers, 88,000 pounds. Speed, 35 mph maximum permissible. Gearing, double reduction gear unit 11.25 to 1 ratio.
  • Trucks: GE fabricated. Wheels, 33” diameter steel.
  • Air Brake Equipment: 14EL. Engineman’s brake valve, K-14-F. Distributing valve, 6KR. Feed valve, M-3. Brake cylinder, 6 X 8. Air compressor, two Gardner-Denver ADS 9003.
  • Dimensions: Length, 33’ 3”. Height, 13” 2 1/2”. Width, 10’ 1”.
  • Propulsion Equipment: Diesel electric. Engine, two Caterpillar D17000 V-8 Diesel heavy-duty non-turbocharger industrial engine, four cycle design, 5 3/4 “ bore. 8” stroke, 1662–cubic–inch displacement. Main generators, two GE direct current type GT-555. Exciter, two GE type GMG-140. Traction motor, for GE733-J1. MU plug, 12 pins. Fuel tank, 250 gallons. Engine cooling water, 100 gallons. Sand, 800 pounds.
  • Current Condition: The locomotive needs one engine rebuilt and is not presently operational.
  • Proposed Future Treatment: SN 146 needs to have one engine rebuilt and returned to operation. It will be returned to its as delivered black and orange paint scheme. The roof mounted number boards need to be reproduced and reinstalled on the roof.
  • Date Last Modified: Wednesday, 11 September 2013
  • Additional Photo 1: Additional Photo 1
  • Photo 1 Caption: SN 146 is second from left in this photo probably taken in 1947. (BAERA Collection)
  • Additional Photo 2: Additional Photo 2
  • Photo 2 Caption: BAERA 18764
  • Additional Photo 3: Additional Photo 3
  • Photo 3 Caption: SN 146 shown on FRRS flat during delivery in May of 2005. (BAERA Photo)

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5848 State Highway 12
Suisun City, CA 94585

(707) 374-2978

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