Preserved at the Wheels o' Time Museum just north of Peoria, Illinois is this class P-31 4-6-2 of the Chicago, Rock Island & Pacific. The last Rock Island steam-powered train to leave Peoria was hauled by No. 886, which the railroad agreed to donate to the city. However, it was discovered too late that No. 886 had already been scrapped. Happily, sister No. 887 was still available and was renumbered 886 for the display, located originally in downtown Peoria. I snapped this digital photo on October 1, 2008. (Note: In this photo I have restored the cylinder sheathing, missing on the actual locomotive.)
Engines of the P-31 class were erected by the American Locomotive Company's Schenectady Works in 1909 as unsuperheated. They were rebuilt with superheaters by the Rock Island in 1917, at which time the driver diameter was raised one inch to 74 inches. These locomotives sustained 185 p.s.i. of boiler pressure and had cylinders of 23x28 inches, and after rebuilding weighed 226,950 pounds and exerted 31,476 pounds of tractive force. Their grate area totaled 45 square feet, and they had 2995 square feet of evaporative heating surface and 676 square feet of superheating surface. No. 886 (887)'s cast steel Delta trailing truck, not original equipment, suggests that she had been given a booster engine adding 10,198 pounds of tractive effort and had been reclassified to P-33-B. Other later modernizing features include the solid, plow-like pilot and the repositioning of the headlight, originally raised ahead of the stack, to the centered position on the smokebox front. Reportedly, the bell mounting on this locomotive is not original, but came from a scrapped 5100-series 4-8-4.