Fairbanks-Morse H16-66 Phases

H16-66 Builder List | H16-66 Rosters

Phase Ia – January to february, 1951

FM H16-66 Phase Ia - Chicago & North Western 1513, West Chicago, Illinois, March 25, 1951.
FM H16-66 Phase Ia – Chicago & North Western 1513, West Chicago, Illinois, March 25, 1951.

Fairbanks Morse H16-66 Phase Ia – Full Raymond Lowey styling:

Only 6 phase Ia units were built:

  • Chicago & North Western 1510-1514
  • Chicago & North Western 150 (Chicago St Paul Minneapolis & Omaha)

Raymond Lowey design elements dominate the appearance of these engines, along with many other features:

  • Sloped cab and hood ends
  • Half-circular side cab windows
  • Radiator area bulges out, with a single large internal fan
  • Headlights mounted on a heavy raised decorative plate
  • General Steel Castings trucks, also used by Baldwin
  • Asymmetrical walkways
  • Three sets of heavy louvers on the long hood above the handrail
  • Two screened openings for the engine air intake, on the long hood above the handrail, behind the cab
  • A screened dynamic brake vent behind the cab, above the handrail
  • Screened openings in the doors for traction motor blowers

Phase Ib – October, 1952, to July, 1953

FM H16-66 Phase Ib - Chicago & North Western 1611 at West Chicago, Illinois, March 25, 1951
FM H16-66 Phase Ib – Chicago & North Western 1611 at West Chicago, Illinois, March 25, 1951

There were 19 phase Ib units built:

  • Chicago & North Western 1605-1612
  • Chicago & North Western 1668-1673
  • Chicago & North Western 168-172 (Chicago St Paul Minneapolis & Omaha)

The engine air intakes are revised: slightly raised, with three sets of louvers. A tall screened opening has been added to one of the doors near the step in the middle of the hood.

Phase Ia air intakes. Engine air intakes are the two large screens above the handrail, behind the dynamic brake intake near the cab. Note the lack of the tall screened intake near the step, on the door marked “Route.”
Phase Ib air intakes. Engine air intakes are the behind the three sets of louvers on the raised panel. Here, the dynamic brake opening, behind the cab, has been plated over by the railroad.
Phase Ib air intakes. Engine air intakes are the behind the three sets of louvers on the raised panel. Here, the dynamic brake opening, behind the cab, has been plated over by the railroad. Note the addition of the tall screened intake near the step.

Phase IIa – August, 1953, to November, 1955

FM H16-66 Phase IIa. Everything has changed: new trucks, new carbody, new frame length.
FM H16-66 Phase IIa. Milwaukee Road 552, St. Paul, Minnesota, September 2, 1971. Dennis Schmidt photo.

Only 14 Phase IIa units were built:

  • Chicago & North Western 1674-1681
  • Milwaukee Road 2125-2130

Everything changed. Fairbanks Morse completely redesigned the carbody, lengthened the frame over five feet, and added new FM-built trucks, the same as the new Train Master used.

Phase IIb – June, 1956, to January, 1958

FM H16-66 Phase IIb - Chicago & North Western FM H16-66 1905, soon after delivery, June, 1956, location and photographer unknown.
FM H16-66 Phase IIb – Chicago & North Western FM H16-66 1905, soon after delivery, June, 1956, location and photographer unknown.

There were 15 Phase IIb units built:

  • Alcoa 721101 (Squaw Creek Coal)
  • Chicago & North Western 1692-1695
  • Chicago & North Western 1699-1700
  • Chicago & North Western 1901-1906

The screened opening in the door in front of the battery box step has been replaced with a large bank of louvers.

Phase IIa intakes on the long hood
Phase IIa intakes on the long hood
Phase IIb air intakes along the long hood.
Phase IIb air intakes along the long hood.

Phase IIb hood ventilation

Phase IIa units use six banks of heavy louvers along the top of the hood, in addition to a bank of three louvers on a raised panel for the engine air intake, but almost no openings on the engine room doors. Phase IIb units added several more intakes along the doors but removed most of the louvers along the top of the hood. The engine air intake was reduced in size from three banks of louvers to two banks.

Phase IIc – October, 1958

Only a single Phase IIc unit was built:

  • Tennessee Valley Authority 24

The two panel air intake was replaced with a three panel one from earlier Phase IIa units, and the bank of two louver sets near the radiators, with nothing in between. The doors retained the Phase IIb ventilation.