O.S.
developed the Surpass Series of 4-stroke
engines for discerning fliers who demand
more power. Able to swing larger props
and supply more usable horsepower, Surpass
4-strokes provide the best performance
for your plane, regardless of scale
or flying style.
The
Surpass series is the 2nd series of
4-stroke engines (The 1st series was
the FS series, discontinued and replaced
by the Surpass series around 1986-7).
"Surpass" refers to this series
gaining 30% more power than the previous
FS series.
All
Surpass engines feature a helix gear-driven
camshaft on the front end and dependable
updraft carburetor in the back. The
FS-120S-E also features ball bearing-supported
camshaft and crankshaft, and includes
a glow plug.
INCLUDES:
One Assembled FS-120 Surpass w/Carb and
No Pump
One #F Glow Plug
One Exhaust Header
One Exhaust Muffler
One Choke Valve Extension
One Set of Instructions, Poster, and Decals
Fuel:
5%-15% nitromethane with 18% lubricant.
Synthetic, castor, or a synthetic/castor
blend may be used. NOTE: Certain four-cycle
fuels cannot be used due to low oil content
. However, SOME four-cycle fuels such
as the Wildcat 4-Cycle 15% (CATP9109)
may be used because it has 18% oil content.
When choosing fuels for this engine, the
modeler must be sure to select a fuel
with at least a 18% lubricant content.
Starting and Field Equipment.
Some
differences between 2-Stroke and 4-Stroke
engines:
4-Strokes are quieter.
4-Strokes get better Fuel Economy
2-Strokes generate More RPM (11,000-13,000
RPM vs. 4-Strokes rev to around 9,500
RPM)
4-Strokes generate much more torque and
will swing a larger prop.
4-Strokes have a more realistic sound,
like a real aircraft engine.
