Fell Engine, Class H, for Rimutaka Incline. Grade, 1 in 15; curves, 5 chains radius. Cylinders (outside), 14" diameter x 16" stroke. Cylinders (inside), 12" diameter x 14" stroke. Diameter of coupled wheels, 2' 8" Diameter of trailing wheels (radial), 2' 6". Tractive-power, 16,540 lbs. Total weight in working trim, 39 tons.