SIMPLE TRACTION ENGINES

Note-All dimensions are in inches, except as noted.

UNIVERSAL 

Diameter of
Cylinder………………………………………….

6

8

8?

9

10

7?

8

8?

9

10

Stroke of Piston……………………………………

8

10

10

12

13

13

10

10

12

13

13

Revolutions per
minute………………………………….

300

275

275

230

230

230

275

275

230

230

230

*Indicated H.-P.-Engine running
empty…………………………..

1.62

3.

3.5

4.

4.5

4.5

3.

3.5

4

4.5

4.5

*Indicated H.-P.-Engine running on
road………………………….

6.8

13.

15.

18.

18.5

18.5

13.

15.

18.

18.5

18.5

*Indicated H.-P-Engine pulling empty wagon (3,115
lbs.)…………….

7.1

14.

16.

19.

19.5

19.5

14.

16.

19.

19.5

19.5

*Indicated H.-P-Engine pulling 1 ton on
wheels…………………….

8.3

15.

17.

20.

20.5

20.5

15.

17.

20.

20.5

20.5

*Indicated H.-P.-Engine pulling 9 tons on
wheels……………………

14.8

18.5

20.

23.

23.5

23.5

18.5

20.

23.

23.5

23.5

Nominal
H.-P……………………………………………….

8

12

16

20

25

30

12

16

20

25

30

Indicated
H.-P………………………………………………

24

36

48

60

75

90

36

48

60

75

90

No. of Revolutions of Engine to one of Rear
Wheel………………….

20.8

25.

25.51

25.

25.

25.

25.51

25.51

25.

25.

25.

Speed on Road in miles per
hour…………………………………

2.27

2.11

2.11

2.11

2.11

2.11

2.11

2.11

2.11

2.11

2.11

Diameter of Circle in which Engine will turn, in
feet…………………

22?

28

28

28

40

40

28

28

28

40

40

Diameter of Cross
Shaft……………………………………….

23/8

3?

3?

3?

4

4

3?

3?

3?

4

4

Diameter of Balance
Wheel……………………………………

32

36

36

42

42

42

36

36

42

42

42

Face of Balance
Wheel……………………………………….

8

10

10

12

14

14

10

10

12

14

14

Weight of Balance
Wheel………………………………………

300

450

450

700

920

920

450

450

700

920

920

Diameter of Rear Road
Wheel…………………………………..

53

66

66

66

66

66

66

66

66

66

66

Face of Rear Road
Wheel……………………………………..

8

14

16

20

24

24

20

20

20

24

24

Diameter of Front Road
Wheel………………………………….

36

42

42

42

42

42

42

42

42

42

42

Face of Front Road
Wheel……………………………………..

4

6

8

8

10

10

10

10

10

10

12

Width of Tread over
all………………………………………..

62?

77?

86?

101?

112

113?

95?

98

101?

111?

113?

Diameter of Shell of
Boiler……………………………………..

22

26

28?

32

32

34

26

28?

32

32

34

Length of Tubes in
Boiler………………………………………

63

72

72

90

90

90

72

72

90

90

90

Diameter of Tubes in
Boiler…………………………………….

1?

2

2

2

2

2

2?

2?

2?

2?

2?

Number of Tubes in
Boiler……………………………………..

28

33

38

50

50

58

This does not include

24

28

36

36

39

Height of Fire
Box……………………………………………

38

36?

39

443/8

443/8

46

31

37

37

37

41

Length of Fire
Box………………………………………….

29?

35?

39?

38?

49

52

395/8

427/8

43

49

52

Width of Fire
Box……………………………………………

19

22

24

26

26

29

21

23?

27

27

29

Area of Grate Surface, in square
feet……………………………..

3.92

5.46

6.54

6.99

8.84

10.5

5.7

7.

8.

9.2

10.5

Diameter of
Stack…………………………………………….

8?

11

11

11

11

13

11

11

11

11

13

Height of
Stack………………………………………………

38

42

42

42

42

44

42

42

42

42

44

Weight of Engine-Complete without
water………………………..

9000

15300

16850

20380

22300

24200

16450

18300

21002

23800

24750

Weight of Boiler-without
water…………………………………

2430

3350

3725

4300

4522

5000

3600

3900

4562

4562

5162

No. of gallons Water in Boiler when glass shows 2
inches………………

70

145

197

285

300

370

145

200

360

360

430

No. of Square Feet of Heating
Surface…………………………….

100

143

160

246

256

289

147

177

263

263

285

Length over
all………………………………………………

170

196

195

213

222

225

203

205

222

222

225

Width over
all……………………………………………….

66

78

84?

92

106?

108?

94?

96?

100?

106?

108?

Height over
all………………………………………………

94

105

110

114

116

116

110

112

114

116

120

Capacity of Water Tanks, in
gallons………………………………

60

60

125

125

125

125

60

125

125

125

125

Coal Capacity, in
pounds………………………………………

230

230

440

440

440

440

230

440

440

440

440

Shipping Weight (in 2 boxes for ocean shipment), gross
lbs…………….

10602

17675

19450

23230

28150

29050

19250

21860

25152

29050

30000

Shipping Weight (in 2 boxes for ocean shipment), tare
lbs……………..

1620

2375

2600

2850

4850

4850

2800

3560

4150

5250

5250

Shipping Weight (in 2 boxes for ocean shipment), net
lbs……………..

9000

15300

16850

20380

22300

24200

16450

18300

21002

23800

24750

Cubical Contents, in
feet……………………………………….

350

500

550

600

750

800

700

750

825

900

950

*These are tabulated results of actual performance of engines on
ordinary level roads, and not merely theoretical examples.