MODEL N KEROSENE
In 1913 when the model N was introduced so too
was the N Kerosene. This was a basic model N but with a very different
mixer. Heat is needed to vaporize and burn kerosene properly, so
to start the engine and get it hot the engine was first run on gasoline.
F&J designed a large square mixer that incorporated a gasoline starting
reservoir. Two needle valves were used, one for gasoline and the
other for kerosene. This let the user switch the engine's fuel
supply once hot. A special muffler was used to heat the incoming
air supply and a manifold was used to pipe that air to the mixer.
This manifold incorporated a pair of choke plates for both starting and
to allow mixing of hot and cold air. It was an interesting setup
but despite being heavily advertised the N Kerosene engines were not a
big success. Unless fully loaded the hit miss governing system
just did not allow the engine to run hot enough at all times. This
caused several problems like excessive carbon, excessive smoke and waste
of fuel along with oil dilution from unburnt fuel. Many of these
engines were exported to Australia where kerosene was a very popular
fuel. F&J had introduced a successful very large throttle governed
engine line in 1914 yet it was not until the end of 1916 that a smaller
series of throttle governed engines replaced the N kerosene.
This cut shows the large mixer with duel needle valves that set the N
Kerosene apart for the regular model N.
The 2 1/2 and 4hp N Kerosene engines were available with the same options as
the regular model N like this 4 wheel hand truck.
They could also be ordered with sawrigs as well as heavy duty duty geared