The Spruce Foos: A Special Electric Foos Engine

Hard-working 1908 25 HP Special Electric Foos Engine now good as new

One of the unique features of Dave's 1908 25 HP Foos Special Electric is the rotary igniter, which Foos advertised as a self-cleaning spark plug.
One of the unique features of Dave’s 1908 25 HP Foos Special Electric is the rotary igniter, which Foos advertised as a self-cleaning spark plug.