Corbin & Kerka (1960, p 106) report that when these locomotives went into service pulling such trains as the Ak-Sar-Ben, the Aristocrat, and the Black Hawk, the Burlington was able to do away with swapping one locomotive for another during the trip. One is credited with hauling 10 standard passenger cars between Cochrane and La Crosse (Wis) at 112 mph. The authors conclude "The 4-6-4 types were perhaps the some of the most successful locomotives used on the Chicago, Burlington & Quincy."
One (3002) was streamlined to resemble the stainless-steel Zephyrs, renumbered 4000 and called Aeolus and nicknamed "Big Alice the Goon." After her success, a second was built from scratch and numbered 4002.
The modification, dubbed S-4A, was more than cosmetic. They also received Box-Pok drivers and roller bearings in the lightweight side rods. Three more S-4s (3008, 3009, and 3011) received the running gear upgrades in 1938, but not the shrouds. They were renumbered 4003-4005.
Corbin & Kerka (1960); Railway Age 7 March 1931; and locomotive diagram published on Vernon Beck's website -- http://home.earthlink.net/~vnlbeck/S/s4j.tif (accessed 22 March 2003)
| Specifications | |
|---|---|
| Class | S-4 |
| Locobase ID | 181 |
| Railroad | Chicago, Burlington & Quincy (CB&Q) |
| Whyte | 4-6-4 |
| Road Numbers | 3000-3012 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1930 |
| Valve Gear | Baker |
| Locomotive Length and Weight | |
| Driver Wheelbase | 13.67' |
| Engine Wheelbase | 39.92' |
| Ratio of driving wheelbase to overall engine wheebase | 0.34 |
| Overall Wheelbase (engine & tender) | 82.23' |
| Axle Loading (Maximum Weight per Axle) | 69780 lbs |
| Weight on Drivers | 207730 lbs |
| Engine Weight | 391880 lbs |
| Tender Light Weight | 326050 lbs |
| Total Engine and Tender Weight | 717930 lbs |
| Tender Water Capacity | 15000 gals |
| Tender Fuel Capacity (oil/coal) | 24 tons |
| Minimum weight per yard of rail on which locomotive could run | 115.41 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 78" |
| Boiler Pressure | 250 psi |
| Cylinders (dia x stroke) | 25" x 28" |
| Tractive Effort | 47676 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.36 |
| Heating Ability | |
| Firebox Area | 369 sq. ft |
| Grate Area | 87.90 sq. ft |
| Evaporative Heating Surface | 4247 |
| Superheating Surface | 1830 |
| Combined Heating Surface | 6077 |
| Evaporative Heating Surface/Cylinder Volume | 266.97 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 21975 |
| Same as above plus superheater percentage | 28592.45 |
| Same as above but substitute firebox area for grate area | 120029.74 |
| Power L1 | 46094.25 |
| Power MT | 1467.58 |
| This page last modified: . | [Contact] | All material © 1999-2008 SteamLocomotive.com |