Carolina, Clinchfield & Ohio 4-6-6-4 "Challenger" Type Locomotives

Class E-1/E-2 (Locobase 337)

Data from Clinch 1948 Locomotive Diagram supplied in May 2005 by Allen Stanley from his extensive collection.

The E-1 & E-2 were virtually identical to the earlier D&H J-95s although the Clinchfield locos had a higher adhesion weight and larger piston diameter. Firebox heating surface included 78 sq ft of arch tubes. Eight E-1s were delivered in 1942-1943, four E-2 in 1947. Both classes were retired by 1954.

For the six E-3s, see the Union Pacific entry (Locobase 1345).

Specifications
Class	E-1/E-2
Locobase ID	337
Railroad	Carolina, Clinchfield & Ohio
Whyte	4-6-6-4
Road Numbers	650-657, +
Gauge	Std
Builder	Alco-Schenectady
Year	1943
Valve Gear	Young
	Locomotive Length and Weight
Driver Wheelbase	12.17'
Engine Wheelbase	59.92'
Ratio of driving wheelbase to overall engine wheebase	0.20
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)	70000 lbs
Weight on Drivers	420000 lbs
Engine Weight	607000 lbs
Tender Light Weight	396300 lbs
Total Engine and Tender Weight	1003300 lbs
Tender Water Capacity	22500 gals
Tender Fuel Capacity (oil/coal)	26 tons
Minimum weight per yard of rail on which locomotive could run	116.67 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	69"
Boiler Pressure	265 psi
Cylinders (dia x stroke)	22" x 32" (4)
Tractive Effort	101121 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.15
	Heating Ability
Firebox Area	636 sq. ft
Grate Area	108 sq. ft
Evaporative Heating Surface	5392
Superheating Surface	1680
Combined Heating Surface	7072
Evaporative Heating Surface/Cylinder Volume	191.49
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	28620
Same as above plus superheater percentage	35418.87
Same as above but substitute firebox area for grate area	208577.78
Power L1	25641.53
Power MT	807.57

Carolina, Clinchfield & Ohio 4-6-6-4 "Challenger" Type Locomotives

Class E-1/E-2 (Locobase 337)

Credits