This is a scale model of a Witte 15 HP hit-and-miss engine, the full size built in 1911. It was built for a friend who ownes the full size.
The model was built from taking measurements of the full size engine, then scaling those measurements down and designing and building the resultant model. No castings were used in the construction of this model with the exception of the flywheels.
Ignition is provided by an igniter as in the full size. The model also has a functioning fuel pump and a functioning coolant system with a water pump to circulate the coolant.
The fuel is metered into the air intake in the same manner as the full size, though the governor does not function.