The left-hand side of the Advance 30 HP cross-compound, serial no. 11574, at Pioneer Power Days in Lewistown, Mont., June 8, 2002. This is the only 30 HP cross-compound known to exist.
Left (from left): The author, Clyde Corley and Jim Spevac at Carl Mehmke’s on June 21, 2002, near Great Falls, Mont.
Above: The right-hand side of the 30 HP cross-compound Advance.
Right: Plowing at Lewistown, June 7, 2003, with the 30 HP Advance cross-compound. Tom Railback is steering while David Vanek Jr. tends to engineering duties.
Below: Belting the Advance 30 HP to the separator. David’s brother Alan Vanek (right) is giving directions and brother-in-law Lem Robinson is on the engine. The author is throwing the belt off.
Right: The man and the machine, Clyde Corley running David Vanek Jr.’s 75 HP Case engine, no. 27816, at Pioneer Power Days in Lewistown, Mont., June 9, 2001. Clyde, who was 93 at the time, belted this engine to the separator by himself in one try.