SPECIFICATIONS ENGINE 2479

 Type

 Pacific

 Class

  P-10

 Sub-classes

  3

 Wheel arrangement

  4-6-2

 Total number of engines

 14

 Maximum speed

 79 mph

 Primary usage

 Passenger

 Steam expansion

  Single

 Builder

 Baldwin

 Year

 1923

 Fuel

 Oil

 Brake type

  Air

 Length, to chafing iron

 48'-5.25"

 Width, over eaves

  10'-0"

 Height, over cab

 14'-10"

 Driver diameter

 73"

 Driving wheel base

 13'-0"

 Total engine wheel base

 35'-6"

 Cross counterbalanced

 Yes

 Cylinder diameter

 25"

 Cylinder stroke

 30"

 Weight on drivers

180,700 lbs. 

 Weight on front truck

  65,500 1bs.

 Weight on trailing truck

 58,800 lbs.

 Total engine weight, loaded

 300 000 lbs.

 Driving axle journals, front

 11" x 13"

 Driving axle journals, main

 12" x 22"

 Driving axle journals, other

 11" x 13"

 Front truck journals

 7" x 12"

 Trailing truck journals

 9" x 14"

 Boiler tubes, diameter of

 2.25" & 5.5"

 Boiler tubes, length of

18' 0" 

 Boiler tubes, number of

 193 & 40

 Heating surface of boiler tubes

 3,069 sq. ft.

 Heating surface of firebox

283 sq. ft.

 Heating surface, evaporating

 3,352 sq. ft.

 Heating surface of superheater

  815 sq. ft.

 Combined heating surface

 4,167 sq. ft.

 Boiler capacity

 97.7%

 Boiler pressure

 210 lbs.

 Tractive effort to adhesive weight

 .242

 Tractive effort (M.E.P. 85%)

 43,660lbs.

 SPECIFICATIONS TENDER Sr. No.8754

 Type

Cylindrical 

 Class

 120-C-8

 Total number of tenders

259 

 Brake type

 Air

 Fuel type

Oil 

 Builder

  Baldwin

 Year

 1926

 Capacity of fuel

 4,000 gals.

 Capacity of water

 12,000 gals.

 Weight of fuel

  32,000 lbs.

 Weight of water

 100,000 lbs,

 Weight of tender, empty

  89,900 lbs.

 Weight of tender, loaded

 221,900 lbs.

 Type of truck

6 Wheel 

 Wheel diameter, truck

  33"

 Truck axle journals

  6.5" x 12"

 Length, extreme

  41'- 5.75"

 Width over steps, extreme

 10'- 10.5"

 Width over end sills, extreme

 10'

 Height, extreme

 14' - 10"

 Diameter of tank, outside

8' - 6.25" 

 Clearance of tank to rail, loaded

 3' - 1"

Many of these tenders were used with 3600, 4300, and 5000 series locomotives.  Some -1 and -7's were coal tenders with a twenty ton fuel capacity.  They were built by Baldwin, Lima, American, and Southern Pacific between 1923 and 1928.  The -1 and -2's had four wheel trucks and -3 through -8 had six wheel trucks.