The Class B Climax locomotive, has two inclined cylinders driving a transverse crankshaft, geared to a longitudinal driveshaft placed centrally on the locomotive and driving the powered trucks via internal gearing.
Former Ceder River Lumber Co. Climax No. 3 was purchased by the Olympic Scenic Railway in 1990 and restored in their Port Andrews Shops. It is the usual motive power for the OSR excursion trains.