Class

Type

New Series

Old Series

Drivers

Tractive Effort

Weight

Remarks

O-21

2-6-0

-

716,717 - 521,522

50"

18,507

81,480

O-22

"

-

718,719 - 531,532

"

"

86,600

O-23

4-6-0

-

720 - 534

"

16,964

88,900

O-24

"

-

721,722 - 535,536

56"

18,411

108,000

O-25

"

-

500,543,544

51"

18,144

79,000

Old Class E

O-26

"

-

723,724 - 537,539

50"

16,964

93,850

Old RMW No. 1 to Roanoke Shops - Shop Shifter

O-27

0-4-2T

27

-

"

10,396

71,100

Camelback - Old Va. Anthracite Coal & Ry. Co. No. 2

O-28

2-6-2

91

-

"

23,794

140,000

Formely Class C

O-29

4-6-0

54

-

55"

18,745

90,150

P

0-6-0

-

132-137,141-145

50"

18,500

82,690

Q

4-4-0

-

514-518

62"

13,312

73,250

R

0-6-0

92-97,139,141,144

129-131,395-400

50"

21,356

94,900

R

0-6-0T

144

-

"

"

108,700

Rebuilt from Class R No. 144 - Shop Shifter

S

0-6-0

-

138-140

50"

18,500

89,500

S1

0-8-0

255-284

-

52"

62,932

247,000

Formerly C&O Ry. C-16 class switchers - Superheated

S1a

"

200-244,290-295

-

"

"

"

Superheated

Shay

56

-

46"

53,000

300,000

Shay geared - Two 4-wheel trucks

T

2-8-0

-

315-345

56"

140,250

Vauclain (4-cylinder) compound as originally built

T

"

315-340 Series

-

"

28,920

128,000

Simple rebuilt from Class T compound - D-slide valves

T1

"

315-340 Series

-

"

"

"

Simple rebuilt - Piston valves between frames

T2 (Ta)

2-8-0

341-345

-

56"

27,557

130,300

Reb. from T as Richmond (Cross) compound - Two cylinders

T3

"

341-345

-

"

34,687

128,000

Simple as rebuilt from T2 - Piston valves

T3

"

341-345

-

"

28,920

"

Cylinders changed from original T3 - Vertical steam chests

U

4-6-0

-

71-85

68"

21,800

135,470

Vauclain (4-cylinder) compound - Rebuilt simple

U

"

71-85

-

67½"

21,600

132,420

Simple as rebuilt from compound - Piston valves (sloping)

V

4-6-0

950-966

-

56"

30,685

155,900

Freight service - Changed to V1 passenger engines

V1

"

950-966

-

62"

29,193

162,350

As rebuilt from V class fro passenger service

W

2-8-0

800-829

-

56"

40,163

167,830

Narrow firebox - D-slide valves - Stephenson valve gear

W1

"

800-879 Series

-

"

"

165,500

Narrow firebox - Piston valves - Stephenson valve gear

W2

"

673-799,843,
866-869,880-949

-

"

"

175,100

Wide firebox - Piston valves - Stephenson or Baker valve gear

W3

2-8-0

823

-

56"

40,163

167,830

Narrow firebox - Hobart-Allfree cylinders

W4

"

776

-

"

"

175,100

Wide firebox - Piston valves - Walschaerts valve gear

W5

0-8-0T

800 Series

-

56"

40,165

186,900

Saddle tank shop shifter - Rebuilt from W1 - Changed to W6

W6

"

10-13,800 Series

-

"

"

"

Saddle tank shop shifter - Changed from W5 about 1925 - Capacity: 2 tons of coal and 2000 gallons of water

X1

0-8-8-0

990-994

-

56"

83,615

90,176(C) 108,211(S)

376,800

As built

Steam pressure raisedto 230 lbs. during 1920's

Y1

2-8-8-2

995-999

-

56"

83,615(C)

400,000

Smokebox reheater - Baldwin flue type feedwater heater

Y2

"

1700-1704,
1711-1730

-

56"

104,300(C)

535,000

Superheated -Changed to Y2a class

Y2a

"

1700-1730

-

"

103,300(C) 123,960(S)

138,000(C) 158,894(S)

526,000

Superheated - Some Y2a had Franklin or Bethlehem tender / boosters

Y3

2-8-8-2

2000-2049

-

57"

101,470(C)

531,000

USRA engine - Superheated - Air pumps on front - Relocated

Y3a

"

2050-2079

-

"

"

114,154(C) 136,985(S)

"

539,000

USRA design - " -" " " " - "

Y3 & Y3a as modified with Worthington BL feedwater heater

Y3b

2-8-8-2

2080-2089

-

57"

101,470(C)

567,000

Superheated - Worthington BL feedwater heater - To Y4

Y4

"

2080-2089

-

"

114,154(C) 136,985(S)

"

Reclassified from Y3b without change - Later as shown

Y4A/Y5

2-8-8-2

2090-2109

-

57"

118,386(C)

582,900

Reclassified in 1931 - Same features as Y4 - Rebuilt 1940-41

Y5

"

2101-2119

-

58"

126,838(C) 152,206(S)

582,900*

As rebuilt to modern design in 1940-41 with inside bearings on engine and trailer truck. See note for features

Y6

2-8-8-2

2120-2154

-

58"

126,838(C) 152,206(S)

582,900*

Outside engine and trailer truck bearings - Worthington BL-2 feedwater heater mounted on left side of boiler.

Y6a

2-8-8-2

2155-2170

-

58"

126,838(C) 152,206(S)

582,900*

Wartime version of Y6 - Needle roller bearing in valve gear**.

Y6b

2-8-8-2

2171-2200

-

58"

126,838(C) 152,206(S)

611,520

Same as Y6 & Y6a except Worthington SA type feedwater heater recessed in smokebox, roller bearings on all tender axles, and one air pump mounted on each side of boiler. Weight shown as improved type with additional ballast added to frame of front engine. Tender capacity of Y6, Y6a, and Y6b classes was 30 tons of coal and 22,000 gallons of water.
**Note- McGill Multitrol valve gear bearings (2125-2200)

Z1

2-6-6-2

1300-1314

-

56½"

75,830(C) 90,996(S)

427,000

Superheated - D-slide valves LP cyls - Walschaerts gear

Z1a

"

1315-1489

-

"

"

"

" - " " " - Baker valve gear

Z1b

"

1331-1489 Series

-

"

"

440,000

Piston valves all cylinders - Worthington BL feedwater heater - Baker valve gear - air pumps on right side

Z2

2-6-6-2

1399

-

56½"

93,342

441,000

As rebuilt from Z1a class in 1928 - Double stack - Baker valve gear