The cylinders, which are all of the same diameter and stroke, 27 inches by 32 inches, are compounded. The middle cylinder is the high-pressure. Its exhaust passes into a receiver in the cylinder casting which is connected with the steam chests of the two low-pressure cylinders.
39. All of the tests were made with run-of-mine bituminous coal from the Keystone Coal and Coke Company's Crows Nest Mine at Hempfield, Westmoreland County, Pennsylvania. This coal is used at the test plant as standard freight locomotive coal.
Average analysis of the coal was as follows:--
Proximate Analysis
Fixed carbon.........................per cent 57.92
Volatile matter...................... " " 31.73
Moisture, combined................... " " 0.74
Ash.................................. " " 9.61
--------
100.00
Ultimate Analysis Carbon.............................. per cent 74.21
Hydrogen............................ " " 5.20
Nitrogen............................ " " 1.37
Oxygen.............................. " " 7.11
Sulphur............................. " " 1.73
Ash................................. " " 10.38
--------
100.00
Sulphur determined separately... per cent 1.8
Total moisture.................. " " 2.43
Calorific value, B. T. U. per pound dry coal. . 13,704 40. Locomotive 60,000 was operated on the test plant without change in the counterbalancing, and speeds up to 200 revolutions per minute (37.5 miles per hour), were attained without excessive vibration. Two-cylinder locomotives must be specially counterbalanced for the test plant to be able to operate satisfactorily at speeds above 160 revolutions per minute.
42. Draft, firebox and smokebox temperatures are Draft, plotted in Fig. 16 and Fig. 17 in relation to the rate firing. There is nothing unusual about these drafts and temperatures.
43. Locomotive 60,000 has a grate area of 82.5 square feet. The maximum rate of firing reached in the test was 150 pounds of coal as fired per square foot of grate per hour, which is equal to 12,388 pounds of coal per hour.
Fig. 16: Relation between Draft & Rate of Firing
Fig. 17: Relation between Firebox & Smokebox Temperatures and Rate of Firing
No attempt was made to work the locomotive at a higher rate, because at 150 pounds per square foot per hour the evaporation was very large and the power output of the locomotive had reached the maximum capacity of the test plant.
44. In all tests the values of the boiler pressure averaged throughout each test ranged between 343 and 350 pounds per square inch.
45. The evaporation in moist steam per hour in relation to the rate of firing per square foot of grate is plotted in Fig. 18. The maximum evaporative capacity of Locomotive 60,000 was 69,695 pounds of moist steam per hour. This includes the exhaust steam reclaimed by the feedwater heater. The corresponding maximum equivalent evaporation was 84,184 pounds per hour. At this rate the steam pressure and temperature were well maintained, and as the rate of firing was only 135 pounds of dry coal per hour, this evaporation could undoubtedly have been increased had not the locomotive already reached the maximum capacity of the test plant.
Fig. 18: Relation between Steam Production and Rate of Firing
Fig. 19 & 20: Relation between Equivalent Evaporation per Hour and Rate of Firing & Relation between Equivalent Evaporation per Pound of Dry Coal, and Rate of Firing
Fig. 21: Relation between Boiler Efficiency and Rate of Firing
46. The total equivalent evaporation is plotted (Fig. 19 (left)) in relation to the rate of firing per square foot of grate per hour, while the equivalent evaporation per pound of dry coal is plotted against the rate of firing per square foot of grate per hour in Fig. 20 (right).
47. The boiler efficiency in per cent is plotted in Fig. 21 against the rate of firing, and in Fig. 22 heat balances are plotted showing the distribution of the heat losses at various rates of firing. From these the efficiency of combustion and the efficiency of heat absorption have been computed, and are plotted in Fig. 23 against the rate of firing. The efficiency of heat absorption is practically constant at about 82 per cent for all rates of firing; the decrease in boiler efficiency, as the rate of firing is increased, being due to a decrease in the efficiency of combustion.
48. Locomotive 60,000 was equipped with a Worthington heater having a capacity of 60,000 pounds per hour which is large enough to supply all of the feedwater required in the heaviest tests. The rise in feedwater temperature in the heater ranged from 127 to 169 degrees F. and the heat saving from 7.4 to 10.4 per cent.
The temperature of the water delivered by the heater was from 30 to 13 degrees below the temperature corresponding to the pressure of the exhaust steam at the heater.
50. A curve showing the average water rate at all speeds and cut-offs is plotted in Fig. 24 in relation to the indicated horse-power. This curve is flatter than that obtained with any single expansion locomotive. For all cut- offs between 50/20 and 80/50 per cent, and all speeds from 80 to 160 revolutions per minute, the water rate lies between 14.2 and 15.2
Fig. 22:
Ordinates in space A represent heat absorbed by boiler.
B lost in smokebox gases.
C by imperfect combustion producing CO.
D " coal escaping unburned.
E " external radiation.
Relation between Heat Losses and Rate of Firing
Fig. 23:
Relation between the Efficiencies of Combustion and Heat
Absorption, and Rate of Firing
pounds per indicated horse-power hour. For a cut-off of 90 per cent in the
high and 70 per cent in the low-pressure cylinders, the water rate is 16.3
pounds at 80 revolutions per minute and 16.6 pounds at 120 revolutions per
minute.
Examination of the detail figures, item 46, page 57-shows that Locomotive 60,000 has its best water rates at speeds of 120 and 160 revolutions per minute, or 22.5 and 30 miles per hour. In test No. 7913 with cut-offs of 70 per cent in the high and 40 per cent in the low-pressure cylinders, and at a speed of 120 revolutions per minute, the water rate was 14.2 pounds per indicated horse-power, which is lower than that of any other locomotive ever tested on The plant.
51. Figs. 25 to 32 show typical indicator cards at representative speeds
and cut-offs, while Figs, 33 to 41 show sets of combined indicator cards for
all cut-offs at 80 revolutions per minute, for all speeds at a cut-off of
70/40 per cent, and for the test at 200 revolutions per minute and cut-off of
60/30 per cent. These combined cards have been prepared to show the relation
of cylinder clearance to total volume, and the action of the steam between the
high, and low-pressure cylinders was practically the same as is usually
observed in locomotives using lower boiler pressure.
Fig. 25, 26, 27
Fig. 28, 29, 30
Fig. 31, 32
52. The number of expansions for Locomotive 60,000 are plotted in Fig. 42. The figures have been calculated for all tests at 80 revolutions per minute, using the method given by R. C. H. Heck in his book on the Steam Engine.
53. Pressures at release and at the end of expansion at a speed of 80 revolutions per minute have been plotted. In spite of the higher initial pressure of Locomotive 60,000, the pressures at release are not abnormally high, while the pressures at the end of expansion are slightly less than normal. This is due to the high ratio of expansion in Locomotive 60,000.
54. At a speed of 80 revolutions per minute and at all cut-offs the high-pressure cylinder develops slightly more work than is developed in each of the low-pressure cylinders, while at 120 revolutions per minute the position is reversed and the high-pressure develops slightly less work than each low-pressure cylinder. As the speed is increased the percentage of work developed in the high-pressure cylinder falls off rapidly. The difference is greater with short cut-offs than with long, and as shown by the cards in Fig. 41, at a speed of 200 revolutions per minute and a cut-off of 60/30 per cent, the work in the high-pressure cylinder is about one-tenth of that of one of the low-pressure cylinders. Nevertheless, under these
Fig. 24:
Relation between Water Rate and Indicated Horse Power
Speed, rev. per min., 80; miles per hour, 15.0
Cut-off, high-press., 50; low-press., 20
Throttle opening, full
Steam in branch pipe Press. 339; temp. 568
receiver, right side . 160; ' 417
" , left " . 159; ' 392
exhaust pipe, right side . 2.1; ' 220
Indicated horse-power, total 1471
Steam per 1. H. P. per hour, pounds 14.9
Speed, rev. per min., 80; miles per hour, 15.0
Cut-off, high-press., 60; low-press., 30
Throttle opening, full
Steam in branch pipe Press. 339; temp. 584
receiver, right side . 162; ' 427
" , left . . 164; ' 398
exhaust pipe, right side . 2.8; ' 222
Indicated horse-power, total 1763
Steam per 1. H. P. per hour, pounds 15.2
Speed, rev. per min., 80; miles per hour, 15.0
Cut-off, high-press., 70; low-press., 40
Throttle opening, full
Steam in branch pipe Press., 337; temp. 600
receiver, Right side 168; ' 451
. , left 168; ' 419
exhaust pipe, right side 4.0; ' 228
Indicated horse-power, total 2164
Steam per 1. H@ P. per hour, pounds 14.8
Speed, rev. per min., 80; miles per hour, 15.0
Cut-off, high-press., 80; low-press., 50
Throttle opening, full
Steam in branch pipe Press. 330; temp. 635
receiver, right side 165; ' 470
. , left 164; ' 442
exhaust pipe, right side 6.2; ' 232
Indicated horse-power, total 2560
Steam per 1. H. P. per hour, pounds 15.2 Fig. 36 - See Above Figure
Speed, rev. per min., 81; miles per hour, 15.2
Cut-off, high-press., 90; low-press., 70
Throttle opening, full
Steam in branch pipe Press. 332; temp. 638
receiver, right side 160; " 495
. , left 164; ' 474
exhaust pipe, right side 9.5; ' 257
Indicated horse-power, total 3034
Steam per I. H. P. per hour, pounds 16.3
Speed, rev. per min., 120; miles per hour, 22.5
Cut-off, high-press., 70; low-press., 40
Throttle opening, full
Steam in branch pipe Press. 333; temp. 634
receiver, right side 178; 504
. , left 174; 463
exhaust pipe, right side 6.3; 235
Indicated horse-power, total 2914
Steam per 1. H. P. per hour, pounds 14.2 Fig. 38 - See Above Figure
Speed, rev. per min., 160; miles per hour, 30.0
Cut-off, high-press., 70; low-press., 40
Throttle opening, full
Steam in branch pipe Press. 327; temp. 653
receiver, Right side 188; ' 618
. , left 186; ' 585
exhaust pipe, right side 9.1; ' 257
Indicated horse-power, total 3304
Steam per I. H. P. per hour, pounds 14.6
Speed, rev. per min., 200; miles per hour, 37.6
Cut-off, high-press., 70; low-press., 40
Throttle opening, full
Steam in branch pipe Press. 321; temp. 674
receiver, right side 197; ' 618
. , left 196; ' 585
exhaust pipe, right side 14.2; ' 317
Indicated horse-power, total 3804
Steam per 1. H. P. per hour, pounds 15.8Fig. 40 - See Above Figure
Speed, rev. per min., 200; miles per hour, 37.6 Cut-off, high-press., 60; low-press., 30 Throttle opening, full Steam in branch pipe Press. 327; temp., 651 ' ' receiver, right side . 200; ' 623 ' ' ' , left ' 200; ' ' ' exhaust pipe, right side 8.6; ' 286 Indicated horse-power, total 2880 Steam per 1. H. P. per hour, pounds 15.3
Fig. 43:
Relation between Pressures at Release and at Maximum
Ratio of Expansion, and Indicated Horse-power at 80
Revolutions per Minute conditions, the water rate is still good, being 15.3 pounds per indicated
horse-power hour.
55. The machine efficiency of Locomotive 60,000 is plotted in Fig. 44 in relation to the draw-bar pull. It appears to vary with the draw-bar pull and to be independent of the speed. There is no noticeable difference between the machine efficiency of Locomotive 60,000 and that of other modern locomotives which have been tested on the Altoona test plant.
56. An average curve showing for all speeds the dry coal used by Locomotive 60,000 per draw-bar horse-power is plotted in Fig. 45.
The coal rate of Locomotive 60,000 is approximately 2.5 pounds at the middle of the working range, increasing somewhat at the lower rates and at rates above 2000 draw-bar horse-power. A rate of 3.25 pounds of dry coal per draw-bar horse-power hour is reached at the maximum output of about 3600 draw- bar horse-power.
57. The overall efficiency of the locomotive, which expresses the work delivered at the rail as a percentage of the heating value of the coal fired, is plotted against the indicated horse-power in Fig. 46.
The efficiency for Locomotive 60,000 varies between 7.8 per cent for a cut-off of 80/50 per cent at 80
PARTIAL THROTTLE FULL THROTTLE
80 R.P.M. 80 R.P.M.
120 R.P.M. 120 R.P.M.
N 160 R.P.M. 0 160 R.P.M.
A 200 R.P.M. 0 200 R.P.M. Fig. 44. Relation between Machine Efficiency and Draw-bar Pull revolutions per minute, and 5.6 per cent for the same cut-off at 200 revolutions per minute.
58. Curves are given in Fig. 47 showing the draw-bar pull at various speeds and cut-offs.
59. In Fig. 48 curves have been plotted showing the coal consumed per mile for all those combinations of draw-bar pulls and speeds which were covered by the tests.
The curves are interesting in showing that with Locomotive 60,000, hauling any train within its capacity, the speed can be increased from 15 miles per hour to 25 miles per hour with practically no change in coal rate.
Fig. 45:
Relation between Fuel Rate and Draw-bar Horse-power
Fig. 46:
Relation between Over-all Efficiency and Indicated Horse-power
Fig. 47:
Relation between Draw-Bar Pull and Speed for various Cut-offs
Fig. 48:
Relation between Draw-Bar Pull and Speed, for various rates of
Coal consumed per Mile
Approximate draw-bat pull. 27,000 44,000 30,000 16,000 20,000 Test Conditions: Approximate speed..... 15 15 22.5 30 37.6 Increase in water rate per indicated horse - power hour when throttling, Item 46, per cent....... 8.7 13.5 4.7 3.3 0.6 Increase in machine effi- ciency when throttling, Item 51, per cent....... 2.1 5 . 3 6.2 9.1 11.2 Decrease in coal rate per draw-bar horse-power hour, when throttling, Item 48a, per cent ...... ........ 0.0 ...... 12.50 Increase in coal rate per draw-bar horse-power hour, when throttling, Item 48a, per cent...... 7.7 4.2 0.0 3.6 ......The coal rate per indicated horse-power hour shown by these tests, indicates that throttling so as to reduce the branch pipe pressure by 100 to 150 pounds per square inch has little effect on the overall efficiency of the locomotive. In one test the coal rate is not affected by throttling, in one it is increased and in two reduced. Theoretical considerations lead to the expectation that the water rate would be increased, and this is shown in all five tests. Also, in all five tests the machine efficiency was increased.
2. Test of Baldwin Three-Cylinder Compound Freight Locomotive
Number 60,000.
a Test made at.............. Locomotive Test Plant, Altoona, Pa.
b To determine......................... Efficiency of Locomotive
c Test conducted by................... The Pennsylvania Railroad
d Locomotive, type...................................... 4-10-2
3. Rated tractive force............................... 82,500 lb.
a Driving wheels, number of pairs..................... 5
b nominal diameter................... 63Y2 in.
c average circumference, measured...... 16.533 ft.
d diameter, measured.......... 5.3 ft.
e Engine truck wheels, number of pairs................ Two
f diameter...................... 33 in.
g Trailing wheels, number of pairs..................... One
h diameter........................... 45.5 in.
4. Wheel base, driving............................ 22 ft. 10 in.
a " , total.............................. 45 ft. 2 in.
b Gage of wheels................................ 4 ft. 8.5 in.
5. Weight of locomotive, water at 2d gage and average
fire....................................... 457,500 lb.
a Weight on leading truck.......................... 57,500 lb.
b " drivers................................ 338,400 lb.
c " trailing truck........................... 61,600 lb.
d of tender, loaded.......................... 243,400 lb.
e Capacity of tender, coal........................... 16 tons
water......................... 12,000 gal.
6. Boiler, type-Fire-tube with water-tube firebox:
a First ring, outside diameter........................ 84 in.
b Flues, small, number.............................. 206
c outside diameter..................... 2.25 in.
d thickness............................ 0.125 in.
e Superheater flues, number......................... 50
f outside diameter................ 5.5 in.
g thickness........................ 0.165 in.
h Length between flue sheets....................... 274 in.
i Flue openings, net area.......................... 9.0 sq. ft.
i Arch tubes, number............................. 5
k " " , outside diameter..................... 3 in.
I " " , thickness............................ 0.134 in.
m " " , length............................... 90 in.
n Firebox, length................................. 199.5 in.
o " width.................................. 96 in.
p Firebox, depth from grate to steam drum..... Front 63.25 in.
Back 63.25 in.
q volume................................. 683 cu. ft.
r Firedoors, number............................... One
s " , openings, area......................... 1.49 sq. ft.
I " , hand or power operated................ Air operated
u Water space in boiler (below 2d gage cock)......... 571 cu. ft.
v Steam " " " (above 2d " " )......... 149 cu. ft.
7. Grate area....................................... 82.5 sq. ft.
a Grate, length.................................... 138 in.
b " width..................................... 86.125 in.
c " style........................ Interlocking, rocking finger
8. Air inlets to firebox, total......................... 26.2 sq. ft.
a " " through grate.......................... 25.9 sq. ft.
b " " above fuel bed.......................... 0.3 sq. ft.
c Ratio of air inlets through grate to grate area........ 0.32
d " ' total air inlets to grate area................ 0.31
Area of air inlets to ashpan........................ 12.4 sq. ft.
Ratio of ashpan inlets to area of tube and flue openings. 1.4
9. Superheater....................................... Type A
a " elements, number....................... 50
b " " , length in flue.................. 259 in.
c " tubes, outside diameter.............. 1.25 in.
d " " thickness......................... 0.134 in.
10. Auxiliary Apparatus:
a Brick arch................................ American, sectional
b Feed water heater.................... Worthington, No.4 B.L.
Feed water heater, rated cap. water per hr........... {60,000 lb.
{ 7200 gal.
c Stoker.................... Duplex, Locomotive Stoker Company
d Reverse gear.......................... Power, Ragonnet
e Air compressor......... Westinghouse (2) in. cross compound
f Electric generator.......... Sunbeam, Sunbeam Electric Mfg. Co.
g Grate shaker.................................. Hand operated
h Injectors.... R.S. Nathan non-lifting, type-Special B-7000 gal.
i Safety valves......................... 3, Consolidated-3.5 in.
11. Heating surface, total (Fireside)................... 6658 sq. ft.
a " " tubes (Fireside)................... 4008 sq. ft.
b " " firebox, incl. arch tubes (Fireside). 783 sq. ft.
c " " evaporative (Fireside)............. 4791 sq. ft.
d " " superheater " ............. 1867 sq. ft.
e " " arch tubes " ............. 30 sq. ft.
12. Exhaust nozzle, type....................... Goodfellow circular
a " " ,dimensions.................... 6.75 in. diameter
b " " ,area, net........................... 33.2 sq. in.
13. Cylinder diameter, right side.....(Low-pressure) 27.026 in.
a Piston stroke, ( " " ) 32 in.
b " rod diameter, ( " " ) 4.75 in.
c Tail It 14 , ( " " ) None
d Clearance, right side, head end... 12.4 per cent
e crank 12.5 " "
13.5 Cylinder diameter, middle....... (High-pressure) 27.038 in.
a Piston stroke, " ....... ( " " ) 32 in.
b Piston rod diameter, middle..... ( " " ) 4.75 in.
c Tail it I (I . I. ( " " ) None
d Clearance, middle, head end..... ( " " ) 13.1 per cent
e " " , crank " ..... ( " " ) 14.3 " " .
f Receiver volume............................. 22.3 cu. ft.
14. Cylinder diameter, left side...... (Low-pressure) 27.025 in.
a Piston stroke, " "...... ( " " ) 32 in.
b ' rod diameter, left side.....( " " ) 4.75 in.
c Tail " " " " ......( " " ) None
d Clearance, left side, head end.... ( " " ) 12.5 per cent
e " " " crank " ( " " ) 12.3
15. Valves, type { High-press. inside admission} Piston, 14 in. diam
{ Low-press. outside " }
a Steam ports, area...... High-press. 64 sq. in., low-press.62 sq. in.
b Valve travel, max.............High-press. 7 in., low-press. 6.25 in.
c Steam lap............... High-press. 0.875 in., low-press. 1.625 in.
d Exhaust lap...... High-press., 0.5 in., negative; low-press. 0.0 in.
e Valve motion, type............................... Walschaerts
f Lead of valve........... High-press. 0.375 in., low-press. 0.250 in.
16. Ratio of heating surface (11) to grate area (7)............ 80.7
a flue openings (6i) to grate area (7)............... 0.11
b firebox heating surface (Ilb) to grate area (7)..... 9.5
c flue surface (Ila) to firebox heating surface (Ilb).. 5.1
d firebox volume (6q) to grate area (7)............. 8.3
TEST TEST DESIGNATION RUNNING CONDITIONS TEMPERATURES, DEGREES FAHR.
No. R.P.M., CUT-OFF ----------------------------|-----------------------------------------------------|
THROTTLE A B C D E F G H I J K L M
I 1 a 18 22 22b 22C 23 23a 24 24a 24b 25 25a 25a 25b
7912 80-50/20-F 2.50 80 15.0 33.8 65 192 568 220 72 519 2415 1980 230
7910 80-60/30-F 2.25 80 15.0 33.8 66 202 584 222 68 537 2505 2011 230
7911 80-70/40-F 1.75 80 15.0 26.3 65 203 600 228 63 554 2548 2108 234
7906 80-80/50-F 1.50 80 15.0 22.5 71 211 635 232 74 574 2708 2065 240
7922 80-90/70-F 0.33 81 15.2 5.1 67 218 638 257 85 610 ..... ... 256
7917 120-50/20-F 2.00 120 22.5 45.0 64 202 593 222 67 538 2590 2145 228
7914 120-60/30-F 2.00 120 22.5 45.0 64 209 615 226 80 555 2642 2135 230
7913 120-70/40-F 1.33 120 22.5 30.0 67 215 634 235 76 577 2707 2206 240
7907 120-80/50-F 0.75 120.8 22.7 17.0 73 219 652 248 71 600 2798 2188 249
7908 120-80/50-F 1.25 120 22.5 28.1 69 219 674 253 71 601 2707 2174 250
7919 120-90/70-F O.5O 120.1 22.6 11.3 64 233 669 286 68 635 2850 2384 292
7918 160-50/20-F 2.00 160 30.0 60.0 64 201 613 224 72 546 2534 2171 232
7915 160-60/30-F 1.50 160 30.0 45.0 67 210 635 236 72 567 2746 2268 237
7916 160-70/40-F 1.00 160 30.0 30.0 66 217 660 254 75 603 2603 2231 245
7926 160-70/40-F 1.00 160 30.0 30.0 65 215 6S3 257 65 606 2681 2108 245
7909 160-80/50-F 0.75 160 30.0 22.5 69 227 674 286 82 630 2850 2373 273
7924 200-60/30-F 1.33 200 37.6 50.1 65 216 651 286 64 603 2694 2156 264
7925 200-70/40-F 0.67 200 37.6 25.1 65 223 674 317 6S 638 2733 2244 285
7923 200-80/50-F 1.00 200 37.6 37.6 67 233 683 308 82 637 2826 2288 288
7927 200-80/50-F 1.00 200 37.6 37.6 64 233 670 313 65 645 2798 2347 289
PARTIAL THROTTLE
7928 80-70/40-P 0.50 80 15.0 7.5 67 198 550 218 67 526 2354 1955 228
7929 80-90/70-P 0.5O 80 15.0 7.5 65 208 607 228 68 571 2668 2164 234
7920 120-80/50-P 2.00 120 22.5 45.0 66 207 599 228 83 562 2520 2150 233
7921 160-70/40-P 2.00 160 30.0 60.0 66 207 565 223 72 548 2520 2044 233
7930 200-80/SO-P 0.50 200 37.6 18.8 64 213 614 251 66 591 2848 2352 237
Table Headings Substitutes:
A- Duration of Test Hrs.
B- Revolutions of Driving Wheels, per Min
C- Speed Equivalent of R.P.M. in M.P.H.
D- Equiv. Length of Run, Miles
E- Feed Water At Heater
F- Feed Water From Heater
G- Steam in Branch Pipe
H- Temperature in Laboratory, Dry Bulb
I- In Smoke Box
J- In Fire Box
K- In Comb. Chamber
L- Steam at Feed Heater
BOILER PERFORMANCE
-----------------------------------------------------------------
TEST TEST DESIGNATION, PRESSURE, POUNDS PER SQ. IN.| Degrees F. | Smokebox |
No. R P M., CUT-OFF, ----------------------------|------------|-----------|---------------
THROTTLE AV B C D E F G H I J K
1 1a 26 26a 26b 26f 26g 26h 26i 27 27a 27b 27c
7912 80-50/20-F 347 339 2.1 160 159 417 392 2.2 1.7 0.60 0.05
7910 80-60/30-F 349 339 2.8 162 164 427 398 2.8 2.1 0.76 0.08
7911 80-70/40-F 349 337 4.0 168 168 451 419 3.8 2.9 0.89 0.11
7906 80-80/50-F 345 330 6.2 165 164 470 442 5.5 4.1 1.28 0.10
7922 80-90/70-F 349 332 9.5 160 164 495 474 7.1 5.1 1.07 0.22
7917 120-50/20-F 349 339 2.7 161 159 450 403 2.7 2.1 0.74 0.07
7914 120-60/30-F 349 335 3.0 172 170 480 442 4.0 3.0 0.98 0.11
7913 120-70/40-F 350 333 6.3 178 174 504 463 5.7 4.1 1.27 0.17
7907 120-80/50-F 343 322 11.1 171 169 507 469 7.5 5.4 1.35 0.24
7908 120-80/50-F 345 325 11.4 171 168 517 480 7.4 5.4 1.36 0.23
7919 120-90/70-F 345 316 17.2 155 166 522 499 10.2 7.2 2.04 0.24
7918 160-50/20-F 349 339 3.5 170 168 515 470 3.2 2.3 0.62 0.09
7915 160-60/30-F 351 334 6.3 181 180 539 492 5.0 3.7 1.18 0.13
7916 160-70/40-F 350 329 9.9 187 180 547 508 7.0 5.2 1.35 0.21
7926 160-70/40-F 347 327 9.1 188 186 618 585 6.9 5.1 1.44 0.15
7909 160-80/5O-F 344 314 16.2 176 174 561 526 9.4 6.8 1.57 0.31
7924 200-60/30-F 346 327 8.6 200 200 623 564 6.2 4.6 1.33 0.15
7925 200-70/40-F 347 321 14.2 197 196 618 585 8.6 6.3 1.59 0.20
7923 200-80/50-F 344 314 19.8 183 182 572 555 10.7 8.0 2.31 0.24
7927 200-80/SMF 344 313 19.7 185 184 583 555 10.6 7.7 1.99 0.22
PARTIAL THROTTLE
7928 80-70/40-P 346 253 1.7 100 101 368 352 2.0 1.4 0.45 0.04
7929 80-90/70-P 349 254 4.6 94 97 401 373 4.3 3.2 0.92 0.09
7920 12G-80/50-P 349 217 4.8 94 92 417 391 4.0 3.2 1.10 0.11
7921 160-70/40-P 350 192 3.2 104 103 455 415 3.1 2.5 0.99 0.07
7930 200-80/50-P 348 202 7.8 99 100 474 437 5.5 4.3 1.39 0.14
53
Table Headings Substitutes:
A- In Boiler
B- In Branch Pipe
C- In Exhause Pipe
D- In Receiver, Right Side
E- In Receiver, Left Side
F- Right Side
G- Left Side
H- Front of Diaph.
I- Back of Diaph.
J- Firebox
K- Ashpan
BOILER PERFORMANCE
Analysis of Dry Smokebox Gases, by Coal as Fired Dry Coal Fire Superheat
TEST DESIGNATION, Volume, Per Cent Per Hour Per Hour of Steam
TEST R.P.M., CUT-OFF, |--------------------------------------|-----|---------------|--------------|----------|
No. THROTTLE A B C D E F G H I J K L M
1 1a 29 29a 29b 29c 29d 29e 30 33 33a 33c 33d 34a 34b
7912 80-SO/20-F 10.05 7.23 0.20 0.00 0.00 82.52 21 3059 37.1 2864 34.7 135 4
7910 80-60/30-F 12.46 5.91 0.00 0.00 0.00 81.63 24 3523 42.7 3393 41.1 151 3
7911 80-70/40-F 12.13 6.11 0.10 0.00 0.00 81.66 23 4470 54.2 4270 51.8 168 6
7906 80-40/50-F 12.81 5.40 0.00 0.00 0.00 81.79 38 5376 65.2 5221 63.3 205 4
7922 80-90/70-F 10.36 5.13 0.10 0.90 0.00 84.41 .. 7473 90.6 7293 88.4 207 19
7917 120-50/20-F 13.26 4.28 0.71 0.00 0.00 81.75 42 3901 47.3 3673 44.5 160 3
7914 120-60/30-F 11.98 6.19 0.10 0.00 0.00 81.73 26 4649 56.4 4413 53.5 183 7
7913 120-70/40-F 10.87 6.29 0.10 0.00 0.00 82.84 33 6077 73.7 5621 68.1 203 7
7907 120-80/50-F 12.71 5.23 0.10 0.00 O@00 81.96 35 7500 90.9 7177 87.0 224 8
7908 120-80/50-F 11.74 5.29 0.00 0.00 0.00 82.97 39 7625 92.4 7500 90.9 245 11
7919 120-90/70-F 13.23 .... 0.60 .... ..... ..... 50 10000 121.2 9404 114.0 243 32
7918 160-50/20-F 11.37 5.12 0.10 0.00 0.00 83.41 34 3923 47.6 3629 44.0 180 2
7915 160-60/30-F 11.94 5.42 0.20 0.00 0.00 82.44 27 5477 66.4 5127 62.1 204 5
7916 160-70/40-F 12.66 4.66 0.00 0.00 0.00 82.68 29 7466 90.5 702S 85.1 230 16
7926 160-70/40-F 12.30 3.27 0.12 0.00 0.00 84.31 36 7524 91.2 6946 84.2 224 21
7909 160-80/50-F Faulty Sample. 54 11029 133.7 10668 129.3 248 36
7924 200-60/30-F 12.92 4.27 0.10 0.00 0.00 82.71 27 6578 79.7 6218 75.4 222 50
7925 200-70/40-F 12.51 2.03 0.51 0.00 0.00 84.95 50 10044 121.7 9254 112.2 246 71
7923 200-80/50-F 13.30 2.16 0.42 0.41 0.61 83.11 43 12388 150.2 11827 143.4 257 50
7927 200-80/50-F 13.70 1.74 0.20 0.00 0.00 84.36 S5 12231 148.3 11150 135.2 245 55
PARTIAL THROTTLE
7928 80-70/40-P ..... .... .... .... .... ..... 39 3226 39.1 2998 36.3 143 2
7929 80-90/70-P ..... .... .... .... .... ..... 28 4702 57.0 4446 53.9 200 3
7920 120-80/50-P Faulty Sample. 27 4547 55.1 4245 51.5 205 3
7921 160-70/40-P 11.24 5.41 0.21 0.00 0.00 83.14 32 3936 47.7 3727 45.2 181 4
7930 200-80/50-P 13.86 4.08 0.00 0.00 0.00 82.06 27 6000 72.7 5786 70.1 226 18
Table Headings Substitutes: 54
A- Carbon Dioxide
B- Oxygen
C- Carbon Monoxide
D- Hydrogen
E- Methane
F- Nitrogen
G- Smoke as Observed, Per Cent
H- Total Lb.
I- Per Sq. Ft. of Grate, Lb.
J- Total Lb.
K- Per Sq. Ft. of Grate, Lb.
L- In Branch Pipe, Deg. Fahr.
M- In Exhaust Pipe, Deg. Fahr.
BOILER PERFORMANCE
TEST DESIGNATION,
TEST R.P.M., Cut-off FEED WATER, LBS. PER HOUR EVAPORATION, Lb/HOUR EQUIV.EVAPORATION Lbs.
No. THROTTLE |--------------------------|---------------------|---------------------
A B C D E F G H I J
1 1a 35g 35h 35i 35j 35m 36 36a 37b 37c 38a
7912 80-50/20-F 21443 2025 705 78 1507 21882 23390 27936 4.2 9.8
7910 80-60/30-F 24749 2583 825 73 519 26740 27260 32550 4.9 9.6
7911 80-70/40-F 29819 3185 975 433 568 32003 32571 39152 5.9 9.2
7906 80-80/50-F 38021 4264 1150 848 2573 38863 41437 49955 7.5 9.6
7922 80-90/70-F 45574 5500 1500 550 1036 49485 50523 60945 9.2 8.4
7917 120-50/20-F 24768 2638 825 4 890 26512 27402 32877 4.9 9.0
7914 120-60/30-F 30763 3542 1005 191 660 33453 34113 41066 6.2 9.3
7913 120-70/40-F 37943 4517 1220 180 903 41376 42279 51011 7.7 9.1
7907 120-80/50-F 46965 5562 1450 289 2474 49763 52237 63087 9.5 8.8
7908 120-80/50-F 47931 5833 1510 287 1393 52084 53477 65353 9.8 8.7
7919 120-90/70-F 59640 8275 1965 761 996 66156 67152 81135 12.2 8.6
7918 160-SO/20-F 28027 2979 900 724 943 29339 30282 36656 5.5 10.1
7915 160-60/30-F 35948 4079 1151 479 1023 38525 39548 47962 7.2 9.4
7916 160-70/40-F 44510 5428 1435 189 703 49046 49749 60672 9.1 8.6
7926 160-70/40-F 44400 5359 1430 290 1146 48323 49469 60187 9.0 8.7
7909 160-80/50-F 57756 7389 1915 430 1762 62952 64715 78612 11.8 7.4
7924 200-60/30-F 41187 4939 1350 293 1686 44147 45833 55644 8.4 8.9
7925 200-70/40-F 5S308 7006 1810 581 1802 59931 61733 75259 11.3 8.1
7923 200-80/50-F 61392 8308 2080 784 1460 67456 68916 83769 12.6 7.1
79-27 200-80/50-F 61938 8602 2058 845 1347 68348 69695 84186 12.6 7.6
PARTIAL THROTTLE
7928 80-70/40-P 21432 2117 717 26 909 22612 23522 27923 4.2 9.3
7929 80-90/70-P 31700 3571 1035 224 1051 33994 35046 42236 6.3 9.5
7920 120-80/50-P 30221 3356 975 27 696 328S4 33550 40402 6.1 9.5
7921 160-70/40-P 25441 2826 820 27 933 27307 28240 33549 5.0 9.0
7930 200-80/50-P 38384 4597 1245 112 776 42092 42868 51765 7.8 8.9
Table Headings Substitutes:
A- Delivered to Feedwater Heater
B- Condensed Steam from Loco. Cyls.
C- Condensed Steam from Feed Pump
D- Lost at Heater Air Vent
E- Steam used by Aux. not incl. Feed Pump
F- Steam to Superheater
G- Moist Steam
H- Per Hour
I- Per Hour per Sq. Ft. of Heating Surface
J- Per Lb. of Dry Coal
BOILER PERFORMANCE | ENGINE PERFORMANCE
TEST DESIGNATION, HEAT BALANCE |
TEST R.P.M., Cut-off |----------------------------| | Events and Pressures from
No. THROTTLE Heat Loss Due To | Indicator Diagrams, Averages
|--------------------------| | |-------------------------|
A B C D E F G H I J K L
1 1a 41 41j 41k 41l 41m 41n 41o 42 43 43 43a 43a
7912 80-50/20-F 68 3.4 12.0 0.9 15.7 89.6 82.0 21882 71.2 65.0 53 26
7910 80-60/30-F 67 3.4 16.3 0.1 13.2 86.1 84.1 26740 84.8 78.8 58 31
7911 80-70/40-F 64 3.2 18.9 0.2 13.7 83.3 83.2 32003 102.2 97.0 69 41
7906 80-80/50-F 67 3.4 15.8 0.0 13.8 86.7 83.5 38863 123.1 113.5 80 55
7922 80-90/70-F 60 3.0 20.0 0.4 16.6 82.3 79.1 49485 147.9 130.9 90 71
7917 120-50/20-F 63 3.2 19.8 2.2 11.8 79.2 84.8 26512 49.1 58.3 57 29
7914 120-60/30-F 65 3.3 17.8 0.4 13.5 84.2 83.6 33453 62.3 75.3 62 33
7913 120-70/40-F 63 3.2 18.2 0.4 15.2 84.0 81.2 41376 80.3 92.7 71 42
7907 120-80/50-F 61 3.1 22.2 0.3 13.4 80.0 82.7 49763 98.4 104.5 81 54
7908 120-80/50-F 61 3.1 21.4 0.0 14.5 79.9 81.5 52084 105.3 109.1 82 53
7919 120-90/70-F 61 3.1 20.1 1.9 13.9 80.6 82.1 66156 133.6 113.9 91 72
7918 160-50/20-F 71 3.6 9.5 0.4 15.5 92.6 82.7 29339 25.1 55.4 53 28
7915 160-60/30-F 65 3.3 16.9 0.7 14.1 84.9 82.8 38525 33.9 68.7 64 34
7916 160-70/40-F 60 3.0 23.7 0.0 13.3 78.8 82.7 49046 55.0 89.0 73 44
7926 160-70/40-F 61 3.1 21.0 0.4 14.5 81.2 81.5 48323 52.3 87.4 72 41
7909 160-80/50-F 51 2.6.....................................62952 84.4 101.7 81 55
7924 200-60/30-F 64 3.2 17.8 0.4 14.6 84.3 82.2 44147 7.9 75.0 62 36
7925 200-70/40-F 58 2.9 23.2 1.7 14.2 76.4 81.1 59931 27.1 96.4 71 47
7923 200-80/50-F 51 2.6 33.7 1.1 11.6 66.4 82.3 67456 59.1 94.4 82 52
7927 200-80/50-F 54 2.7 30.3 0.6 12.4 70.3 82.0 68348 58.0 92.8 83 55
PARTIAL THROTTLE
7928 80-70/40-P 66 3. 3 ... ..... ....... ...... .....22612 85.3 53.1 71 40
7929 80-90/70-P 67 3.4.....................................33994 129.5 73.2 91 71
7920 120-80/50-P 67 3.4.....................................32854 81.7 58.9 82 54
7921 160-70/40-P 65 3.3 16.0 0.9 14.8 84.4 82.1 27307 33.4 44.2 73 43
7930 200-80/50-P 63 3.2 20.9 6.0 13.0 81.6 83.6 42092 56.5 46.7 83 54
Table Headings Substitutes:
A- Efficiency of Boiler and Furnace, Heat Absorbed, Per Cent
B- External Radiation, Per Cent
C- Coal Escaping Unburned, Per Cent
D- Imperfect Combustion producing Carbon Monoxide, Per Cent
E- Heat in Smokebox Gas, Per Cent
F- Efficiency of Combustion, Per Cent
G- Efficiency of Absorption, Per Cent
H- Steam to Engines per Hour, Lb.
I- Mean Effective Press, Lb./Sq.In, High Pressure Cylinder
J- Mean Effective Press, Lb./Sq.In, Low Pressure Cylinders
K- Cut-Off, Per Cent of Stroke, High Pressure Cylinder
L- Cut-Off, Per Cent of Stroke, Low Pressure Cylinders
PRESSURES FROM INDICATOR DIAGRAMS, AVERAGES,
POUNDS PER SQUARE INCH
TEST TEST DESIGNATION,STEAM CHEST INITIAL PRESSURE LEAST BACK
No. R.P.M., CUT-OFF, PRESSURE PRESSURE AT CUT-OFF PRESSURE
THROTTLE |--------|-----------|-----------|----------|
A B C D E F G H I J K
1 1a 43b 43b 43c 43d 43d 43d 43e 43e 44 45a 46
7912 80-SO/20-F 335 160 348 IS8 248 114 159 1 1471 1.8 14.9
7910 80-60/30-F 335 160 347 165 263 123 164 2 1763 1.9 15.2
7911 80-70/40-F 335 170 351 173 273 127 172 2 2164 1.9 14.8
7906 80-80/50-F 325 170 353 175 282 130 167 5 2S60 1.9 15.2
7922 80-90/70-F 330 165 357 165 306 138 164 6 3034 2.4 16.3
7917 120-50/20-F 340 160 3S4 157 213 98 161 2 1807 2.0 14.7
7914 120-60/30-F 340 175 361 171 235 118 174 4 2333 1.9 14.3
7913 120-70/40-F 335 180 361 178 239 126 180 5 2914 1.9 14.2
7907 120-80/50-F 320 170 355 176 247 128 175 10 3411 2.0 14.6
7908 120-80/50-F 325 170 351 176 251 133 175 8 3544 2.1 14.7
7919 120-90/70-F 315 165 347 160 273 128 163 19 3978 2.3 16.6
7918 160-50/20-F 345 175 347 169 214 99 164 2 1986 1.8 14.8
791S 160-60/30-F 340 185 348 178 219 110 181 4 2545 2.0 15.1
7916 160-70/40-F 335 190 35S 190 220 121 184 9 3395 2.0 14.4
7926 160-70/40-F 330 190 348 183 219 126 182 13 3304 2.1 14.6
7909 160-80/50-F 320 180 343 179 234 129 179 13 4207 2.5 15.0
7924 200-60/30-F 330 200 335 191 218 121 163 10 2880 2.1 15.3
7925 200-70/40-F 320 200 340 194 223 124 194 14 3804 2.4 15.8
7923 200-80/5G-F 310 18S 333 186 221 131 188 19 4515 2.6 14.9
7927 200-80/50-F 310 185 338 187 210 122 181 20 4450 2.5 15.4
PARTIAL THROTTLE
7928 80-70/40-P 245 100 290 98 152 72 101 3 1400 2.1 16.2
7929 @90/70-P 250 95 294 94 192 77 99 5 2018 2.1 16.8
7920 120-80/50-P 222 95 262 97 143 69 97 3 2188 1.9 15.0
7921 160-70/40-P 185 105 232 104 112 59 100 3 1781 2.0 15.3
7930 200-80/50-P 195 100 239 94 123 60 103 9 2739 2.1 15.4
Table Headings Substitutes:
A- High Pressure Cylinder
B- Two Low Pressure Cylinders
C- High Pressure Cylinder
D- Two Low Pressure Cylinders
E- High Pressure Cylinder
F- Two Low Pressure Cylinders
G- High Pressure Cylinder
H- Two Low Pressure Cylinders
I- Total Indicated Horse-power
J- Dry Coal per 1 H.P. per Hour, Lb.
K- Steam per 1 H.P. per Hour, Lb.
TEST TEST DESIGNATION,
No. RPM, CUT-OFF, GENERAL LOCOMOTIVE PERFORMANCE
THROTTLE |------------------------------------------------------|
A B C D E F G H
1 1a 47 47a 48a 49 49b 50a 51 52
7912 80-50/20-F 1099 27428 2.6 20.4 36702 9281 74.7 7.0
7910 80-60/3G-F 1411 35216 2.4 19.3 43989 8783 80.0 7.6
7911 80-70/40-F 1789 44625 2.4 18.2 53992 9356 82.7 7.7
7906 80-80/50-F 2216 55286 2.4 17.8 63872 8583 86.6 7.8
7922 80-90/70-F 2706 66670 2.7 18.6 74764 8083 89.2 6.9
7917 120-50/20-F 1295 21544 2.8 21.0 30057 8516 71.7 6.5
7914 120-60/30-F 1807 30055 2.4 18.8 38806 8749 77.5 7.4
7913 120-70/40-F 2365 39342 2.4 17.8 48470 9132 81.2 7.6
7907 120-80/50-F 2914 48143 2.5 17.3 56361 8212 85.4 7.4
7908 120-80/50-F 3020 50239 2.5 17.5 58949 8716 85.2 7.4
7919 120-90/70-F 3577 59451 2.6 18.8 66113 6664 89.9 7.1
7918 160-50/20-F 1308 16320 2.8 22.9 24775 8458 65.9 6.6
7915 160-60/30-F 1990 24820 2.6 19.7 31749 6924 78.2 7.0
7916 160-70/40-F 2766 34511 2.5 18.0 42353 7847 81.5 7.2
7926 160-70/40-F 2581 32197 2.7 19.0 41218 9019 78.1 6.9
7909 160-80/50-F 3604 44961 3.0 17.7 52483 7522 85.7 6.1
7924 200-60/40-F 1954 19502 3.2 23.1 28743 9242 67.8 5.8
7925 200-70/40-F 2829 28235 3.3 21.5 37964 9731 74.4 5.6
7923 200-80/50-F 3506 34991 3.4 19.6 45060 10070 77.7 5.6
7927 200-80/50-F 3479 34722 3.2 20.0 44411 9691 78.2 5.8
PARTIAL THROTTLE
7928 80-70/40-P 1068 26655 2.8 21.8 34930 8283 76.3 6.7
7929 80-90/70-P 1758 43860 2.5 19.8 50349 6487 87.1 7.3
7920 120-80/50-P 1801 29957 2.4 18.6 36394 6437 82.3 7.9
7921 160-70/40-P 1281 15975 2.9 21.8 22218 6238 71.9 6.4
7930 200-80/50-P 2066 20618 2.8 20.7 27335 6717 75.4 6.6
Table Headings Substitutes:
A- Drawbar Horse-power
B- Drawbar Pull, Average, Lb.
C- Dry Coal per Drawbar H.P. per Hour, Lb.
D- Steam per Drawbar H.P. per Hour, Lb
E- Tractive Force Based on M.E.P., Pounds
F- Locomotive Friction Expressed as Pull at Drawbar, Pounds
G- Machinery Efficiency of Locomotive, Per Cent
H- Efficiency of Locomotive, Per Cent
Throttling Tests
OPENING OF THROTTLE VALVE, FULL OR PARTIAL
Part Full Part Full Part Full Part Full Part Full
Test No. (1).......................................... 7928 7912 7929 7911 7920 7914 7921 7918 7930 7924
Speed........................ 80 80 80 80 120 120 160 160 200 200
Designation (1a) H. P. Cut-off................ 70 50 90 70 80 60 70 50 80 60
L. P. Cut-off................ 40 20 70 40 50 30 40 20 50 30
Throttle..................... P F P F P F P F P F
Boiler Press., lb. per sq. in. (26)................. 346 347 349 349 349 349 350 349 348 346
Branch Pipe Press., lb. (26a)................... 253 339 254 337 217 335 192 339 202 327
Exhaust Pipe Press., lb. (26b).................. 1.7 2.1 4.6 4.0 4.8 3.0 3.2 3.5 7.8 8.6
Steam Temperature in Branch Pipe (24)......... 550 568 607 600 599 61S 565 613 614 651
Steam Temperature in Exhaust Pipe (24a)....... 218 220 228 228 228 226 223 224 251 286
Superheat of Exhaust Steam................... 2 4 3 6 3 7 4 2 18 50
Indicated Horse-power (44).................... 1400 1471 2018 2164 2188 2333 1781 1986 2739 2880
Steam per 1. H. P.-Hr. (46).................... 16.2 14.9 16.8 14.8 15.0 14.3 15.3 14.8 15.4 15.3
Dry Coal per 1. H. P.-Hr. (45a)................ 2.1 1.8 2.1 1.9 1.9 1.9 2.0 1.8 2.1 2.1
Drawbar Pull (47a).......................... 26655 27428 43860 44625 29957 30055 15975 16320 20618 19502
Drawbar Horse-power (47).................... 1068 1099 1758 1789 1801 1807 1281 1308 2066 1954
Steam per D. H. P.-Hr. (49)................... 21.8 20.4 19.8 18.2 18.6 18.8 21.8 22.9 20.7 23.1
Dry Coal per D. H. P.-Hr. (48a)............... 2.8 2.6 2.5 2.4 2.4 2.4 2.9 2.8 2.8 3.2
Machine Efficiency, Per Cent (51).............. 76.3 74.7 87.1 82.7 82.3 77.5 71.9 65.9 75.4 67.8
Efficiency of Locomotive, Per Cent (52)......... 6.7 7.0 7.3 7.7 7.9 7.4 6.4 6.6 6.6 5.8
A general schedule of the road tests is as follows:
From October 13 to 16, and October 25 to November 4, 1926, the locomotive
was in service on the Pennsylvania Railroad, operating on the low-grade
freight line between Enola (Harrisburg) and West Morrisville, Pennsylvania.
From November 16 to December 30, 1926, the locomotive was in service on the Baltimore & Ohio Railroad, operating on the Cumberland, Connellsville and Pittsburgh Divisions of that road.
Locomotive 60,000 on Exhibition at Chicago
From January 24 to February 3, 1927, the locomotive was in service on the Erie Railroad, operating from Elmira, New York, to Chicago, with one extra round trip between Kent and Marion, Ohio.
From February 4 to February 8, the locomotive was on exhibition at the Union Station, Chicago. On the latter date, the locomotive was received by the Chicago, Burlington & Quincy Railroad, and until February 23, was in service on the Beardstown Division of that road.
On February 24, the locomotive was run to Fort Madison, Iowa, where it was used in a series of track stress tests on the Atchison, Topeka & Santa Fe Railway. It was then run to Clovis, New Mexico, hauling tonnage trains over the Santa, Fe; and during the period March 13 to May 2, was in service between Clovis and Belen. From May 2 to May 5, the locomotive was en route from Clovis to El Paso, Texas, on the Southern Pacific Lines.
From May 12 to June 28 the locomotive was operated in a series of runs between El Paso, Texas, and Tucson, Arizona, on the Southern Pacific Lines, burning coal as fuel. It was then taken to Sacramento, California, and there equipped for oil burning. From August 31 to November 20 the locomotive was used in both freight and passenger service on the Southern Pacific Lines, between Roseville, California, and Sparks, Nevada.
Subsequent to these tests the locomotive was moved to Portland, Oregon, where it was exhibited from December 25 to December 28. It was then moved to the Great Northern Shops at Everett, Washington, and on January 7, 1928, left that point with a tonnage train, eastbound over the Great Northern Railway. On January 17 it arrived at Minot, North Dakota. As oil fuel was not available east of this point, the locomotive was moved "dead" to St. Paul, Minnesota, where it was changed back to a coal burner. From February 5 to February 9 it made two round trips between Minneapolis and Superior, Wisconsin. It was then transferred to the Chicago, Burlington & Quincy Railroad, and was operated over that line in freight service, arriving at Chicago on February 17.
From February 23 to February 25 the locomotive was en route light from Chicago to Eddystone, over the tracks of the Pennsylvania Railroad.
An inspection of the locomotive, after its arrival at Eddystone, showed it to be in excellent condition. The wear in the cylinders and steam chests was practically negligible. The shoes and wedges, which were of iron, cast in the Baldwin foundry, showed wear as given in the following table:
SHOES
RIGHT SIDE LEFT SIDE
Top | Bottom Top | Bottom
lst Drivers................. .007" .007" .012" .007"
2d " .............. .005" .004" .005" .005"
3d........................... .005" .005" .006" .005"
4th " .............. .009" .008" .015" .009"
5th " .............. .00511 .00511 .00511 .00711
WEDGES
RIGHT SIDE LEFT SIDE
Top | Bottom Top | Bottom
Ist Drivers.................. . 010" .007" .010" .008"
2d " .............. .006" .006" .006" .006"
3d........................... .006" .007" .008" .008"
4th " .............. .01011 .01111 .01211 .01011
5th " .............. .007" .008" .008" .009"
Through the courtesy of the railroad companies over whose lines
Locomotive 60,000 was operated, the principal results of the tests are
presented in the following pages.Locomotive 60,000 Arriving at Eddystone at the Conclusion of the Trip, February 25, 1928
Preliminary test runs were made on the ruling grade, on which, in addition to dynamometer and coal records, indicator cards, and temperature and pressure readings were taken at five-minute intervals. The locomotive was operated with full throttle and fixed cut-off, and an attempt was made to keep the speed as nearly uniform as possible by entering the test stretch at a speed at which it was estimated the train could be hauled. The figures for steam per indicated horse-power on these tests, agree closely with those obtained on the stationary test plant. The results of these preliminary tests are given in the following table:
No. Test Designation Coal Water Water Indic- Coal Steam Draw- Draw- Coal Steam Coal Weight
Length Fired Evapor- Evapor- ated Fired /H.P. bar bar Fired/ /DB-HP per Train,
Test Test in /Hour ated/ ated/Lb H.P. /H.P. /Hr Pull Horse- DB-HP Hour, Mile, Adjusted
No. Designation Hours Lbs Hour Lb Coal Total /Hr Lb Lb. Lb. Power Hr,Lb Lb. Lb. Tons
7931 97-80/50-F 1.167 7650 47,842 6.26 2760 2.6 16.3 53,560 2600 2.9 18.2 420 6220
7932 96-88/65-F .833 9368 49,860 5.32 2901 3.1 16.3 56,600 2731 3.4 18.1 518 7051
7933 83-82/62-F .667 7013 47,918 6.82 .... ... .... 56,290 2352 3.0 20.4 447 7113
7934 92-86/65-F .333 9150 50,466 5.52 .... ... .... 61,980 2854 3.2 17.7 529 7113
7935 100-90/70-F .500 9600 55,128 5.74 3153 2.9 16.7 58,640 2932 3.3 18.8 511 7514
7936 80-90/70-F .416 7560 50,731 6.71 2841 2.5 17.1 65,370 2607 2.9 19.5 507 7404
7937 102-92/75-F 1.000 10,590 58,807 5.55 3242 3.1 17.3 60,740 3089 3.4 19.0 554 7549
After the preliminary tests on the ruling grade, four round trips were
made between Enola and West Morrisville. No indicator cards were taken, but
the coal and water were measured and complete dynamometer car records were
made. The road was divided into sections over which the grade is
approximately uniform, and the coal used was measured over each of these
sections. The water was measured only at starting and stopping of the test,
and at water filling stations. On three of the eastbound trips the train tonnage approximated 7,000, while on the fourth it approximated 7,500. The following table gives data covering the trips in both directions:
EASTBOUND-ENOLA TO WEST MORRISVILLE
NOMINAL TONNAGE |----------------- 7000 -----------------|--7500-|
TEST NUMBER 7938 7940 7942 Average, 7944
3 Tests
Number of cars........................... 81-77 75-74 82 79 90
Adjusted tons............................ 7095 7000 6998 7031 7489
Total time, hours........................ 11.333 10.983 12.033 11.450 7.500
Running time, hours...................... 7.519 7.684 8.684 7.962 6.934
Coal, pounds, standin- 2500 2600 2600 2567 400
running.................... 32,400 32,350 29,000 31,250 33,150
total...................... 34,900 34,950 31,600 33,817 33,550
Water, pounds.......................... 224,500 220:150 208:300 217,650 214,950
per pound coal................... 6.4 6.3 6.6 6.4 6.4
WESTBOUND-WEST MORRISVILLE To ENOLA
TEST NUMBER 7939 7941 7943 Average 7945
Number of cars........................... 101 103 100 101 101
Adjusted tons............................. 3195 3221 2970 3 129 3091
Total time, hours.....................h2>Engine Performance
Running time, hours....................... 7.701 6.241 7.601 7.181 7.377
Coal, pounds, standing..................... 1850 1200 1300 1450 1450
running...................... 32,350 26,800 27,000 28,717 29,175
total........................ 34,200 28,000 28,300 30,167 30,625
Water, pounds............................ 218,850 179,520 185,250 194,540 188,725
per pound coal..................... 6.4 6.4 6.5 6.4 6.2