Fuel
for your radial engine should be a high quality gasoline of at
least 91 octane. The recommended oil is Klotz KL-189 and should
be mixed 50:1 for break and normal use.
Adding nitro methane or
methanol for any reason will not
enhance the engine’s performance
but rather cause undue
wear, overheating and the voiding of your
warranty.
Starting with the
carburetor
adjustments
, both the high speed
and low speed needle valves are pre set at the factory for correct
fuel delivery under normal operating conditions (air temperature,
barometric pressure and elevation). The elevation of your location
is important to properly tuning your carburetor. The elevation of
the
PEGASUS TECHNOLOGY
factory is 188’ above sea level. You
can find out the elevation of your area by calling your local airport.
Depending on your location, minor adjustments may need to be
made but major adjustments are a mistake. Minor adjustments
usually consist of no more than 1/8 turn in either direction of the
low and high speed needles valves. If you loose your place (with
the needle valves) the low speed needle is 2 turns out (counter
clockwise) and the high speed needle is 6 turns out (counter
clockwise) from completely closed. This is the factory settings.
It is critical to insure that your linkage and servo throw do not allow
the throttle plate to move past center line (FULL OPEN POSITION)!!.
This could cause an unsafe loss of power and or stall of engine. It is
important to use a stiff linkage rod to prevent High G forces from
flexing the linkage rod into a position that could allow the throttle
plate to move past full open position!!
For the start up and initial
break-in period
of your engine, be sure
the fuel to oil ratio is 50:1. Run the engine at approximately 1/2
throttle for at least 4 tanks of fuel (32 oz or 1000 ml per tank).
During this period, vary the throttle up and down slightly. Run the
engine 5 to 10 minutes at a time letting it cool down between runs.
Do not try to idle the engine during the first 15 minutes of break-in
as doing so can cause an adverse and degenerating affect on the
cam, cam lobes and cam followers.
