This class had many fathers: 10 (original numbers 684-693) from Rhode Island Locomotive Works, 1 from Brooks, 10 from Cooke (721-730), 10 from Grant (works #1723-1731 produced in December 1887, road numbers 731-740).
This set of relatively large Eight-wheelers came from the Paterson, NJ builder as the CS was completing its construction from Chicago to Terre Haute. The 1905 order description included a count of 270 2" tubes, which resulted in a higher heating surface area than the 1945 diagram showed. The 1945 diagram revealed that the firebox heating surface included 12 sq ft of arch tubes.
The CS was reorganized with the Southern Indiana Railroad in 1910 as the Chicago, Terre Haute & Southeastern. And in 1921, the Milwaukee Road negotiated a 999-year lease on the road. That's when this nonet received its H8 class ID and higher road numbers.
| Specifications | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Class | H3 | H3 | H3 | H3 | H4 | H5 | H5 - long pattern | H5 - long pattern | H5 - short pattern | H6 | H7 | H7 | H8 |
| Locobase ID | 9873 | 9875 | 9876 | 9877 | 9878 | 9882 | 9880 | 9881 | 9879 | 9883 | 9884 | 9886 | 9874 |
| Railroad | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Milwaukee Road (CMStP&P) | Chicago Southern (CMStP&P) |
| Whyte | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 | 4-4-0 |
| Road Numbers | 86-99 | 107-108 | 116-124 | 165-170 | 203-231 | 337-343 | 315-404 | 405-408 | 300-314 | 500-530 | 700-717 | 721-730 | 900-908 |
| Gauge | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std | Std |
| Builder | Taunton | Pittsburgh | Burnham, Parry, Williams & Co | William Mason | Schenectady | Milwaukee | Rhode Island | Manchester | Rhode Island | several | Rhode Island | Schenectady | Rogers |
| Year | 1873 | 1879 | 1880 | 1871 | 1877 | 1893 | 1879 | 1882 | 1879 | 1886 | 1882 | 1889 | 1904 |
| Valve Gear | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson | Stephenson |
| Locomotive Length and Weight | |||||||||||||
| Driver Wheelbase | 7.50' | 8' | 8' | 7.25' | 8.50' | 8.50' | 8.50' | 8.50' | 8.50' | 8.50' | 8.50' | 8.50' | 8' |
| Engine Wheelbase | 21.50' | 21.67' | 21' | 21.33' | 22.50' | 22.33' | 23.25' | 23.25' | 22.75' | 23.25' | 23.25' | 23.25' | 22.83' |
| Ratio of driving wheelbase to overall engine wheebase | 0.35 | 0.37 | 0.38 | 0.34 | 0.38 | 0.38 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.35 |
| Overall Wheelbase (engine & tender) | 43.50' | 43.75' | 43.33' | 44.71' | 44.87' | 45.54' | 45.54' | 45.04' | 45.79' | 45.54' | 45.96' | 49.90' | |
| Axle Loading (Maximum Weight per Axle) | |||||||||||||
| Weight on Drivers | 40000 lbs | 42800 lbs | 42750 lbs | 40400 lbs | 50000 lbs | 54000 lbs | 55000 lbs | 55000 lbs | 52100 lbs | 64000 lbs | 60000 lbs | 60000 lbs | 85600 lbs |
| Engine Weight | 65700 lbs | 72700 lbs | 68550 lbs | 66650 lbs | 81000 lbs | 86000 lbs | 85000 lbs | 85000 lbs | 81220 lbs | 100100 lbs | 94000 lbs | 97000 lbs | 131000 lbs |
| Tender Light Weight | 55000 lbs | 52600 lbs | 60000 lbs | 55000 lbs | 60000 lbs | 68000 lbs | 60000 lbs | 60000 lbs | 60000 lbs | 78000 lbs | 60000 lbs | 78000 lbs | 112000 lbs |
| Total Engine and Tender Weight | 120700 lbs | 125300 lbs | 128550 lbs | 121650 lbs | 141000 lbs | 154000 lbs | 145000 lbs | 145000 lbs | 141220 lbs | 178100 lbs | 154000 lbs | 175000 lbs | 243000 lbs |
| Tender Water Capacity | 2000 gals | 3200 gals | 2000 gals | 2000 gals | 2800 gals | 3600 gals | 2700 gals | 2700 gals | 2700 gals | 3800 gals | 2700 gals | 2700 gals | 5000 gals |
| Tender Fuel Capacity (oil/coal) | 4 tons | 4 tons | 4.5 tons | 4 tons | 5 tons | 5 tons | 4.5 tons | 4.5 tons | 4.5 tons | 5 tons | 5 tons | 5 tons | 10 tons |
| Minimum weight per yard of rail on which locomotive could run | 33 lb rail | 36 lb rail | 36 lb rail | 34 lb rail | 42 lb rail | 45 lb rail | 46 lb rail | 46 lb rail | 43 lb rail | 53 lb rail | 50 lb rail | 50 lb rail | 71 lb rail |
| Geometry Relating to Tractive Effort | |||||||||||||
| Driver Diameter | 63" | 62" | 63" | 63" | 69" | 63" | 63" | 63" | 63" | 70" | 63" | 63" | 67" |
| Boiler Pressure | 130 psi | 130 psi | 130 psi | 130 psi | 140 psi | 160 psi | 140 psi | 140 psi | 140 psi | 150 psi | 150 psi | 180 psi | 180 psi |
| Cylinders (dia x stroke) | 16" x 24" | 16" x 24" | 16" x 24" | 16" x 24" | 17" x 24" | 16" x 24" | 17" x 24" | 17" x 24" | 17" x 24" | 18" x 24" | 18" x 24" | 17" x 24" | 18" x 26" |
| Tractive Effort | 10776 lbs | 10950 lbs | 10776 lbs | 10776 lbs | 11962 lbs | 13263 lbs | 13101 lbs | 13101 lbs | 13101 lbs | 14163 lbs | 15737 lbs | 16845 lbs | 19237 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.71 | 3.91 | 3.97 | 3.75 | 4.18 | 4.07 | 4.20 | 4.20 | 3.98 | 4.52 | 3.81 | 3.56 | 4.45 |
| Heating Ability | |||||||||||||
| Firebox Area | 96 sq. ft | 92.20 sq. ft | 98 sq. ft | 90 sq. ft | 120 sq. ft | 106 sq. ft | 120 sq. ft | 120 sq. ft | 120 sq. ft | 123 sq. ft | 127 sq. ft | 130 sq. ft | 148 sq. ft |
| Grate Area | 14.50 sq. ft | 14.30 sq. ft | 15 sq. ft | 14.50 sq. ft | 17.10 sq. ft | 17.50 sq. ft | 17.20 sq. ft | 17.20 sq. ft | 17.20 sq. ft | 17.50 sq. ft | 17.20 sq. ft | 17 sq. ft | 26.80 sq. ft |
| Evaporative Heating Surface | 806 | 956 | 823 | 798 | 1030 | 892 | 1090 | 1090 | 1090 | 1390 | 1215 | 1177 | 1729 |
| Superheating Surface | |||||||||||||
| Combined Heating Surface | 806 | 956 | 823 | 798 | 1030 | 892 | 1090 | 1090 | 1090 | 1390 | 1215 | 1177 | 1729 |
| Evaporative Heating Surface/Cylinder Volume | 144.31 | 171.17 | 147.36 | 142.88 | 163.36 | 159.71 | 172.88 | 172.88 | 172.88 | 196.64 | 171.89 | 186.68 | 225.79 |
| Computations Relating to Power Output (More Information) | |||||||||||||
| Robert LeMassena's Power Computation | 1885 | 1859 | 1950 | 1885 | 2394 | 2800 | 2408 | 2408 | 2408 | 2625 | 2580 | 3060 | 4824 |
| Same as above plus superheater percentage | 1885 | 1859 | 1950 | 1885 | 2394 | 2800 | 2408 | 2408 | 2408 | 2625 | 2580 | 3060 | 4824 |
| Same as above but substitute firebox area for grate area | 12480 | 11986 | 12740 | 11700 | 16800 | 16960 | 16800 | 16800 | 16800 | 18450 | 19050 | 23400 | 26640 |
| Power L1 | 3143 | 3408 | 3209 | 3050 | 4162 | 4277 | 3940 | 3940 | 3940 | 4964 | 4122 | 5477 | 6481 |
| Power MT | 346.46 | 351.09 | 330.98 | 332.88 | 367.03 | 349.23 | 315.86 | 315.86 | 333.44 | 341.99 | 302.91 | 402.49 | 333.84 |
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