8. EXHAUST SYSTEM
The Simonini Engines produce a high power output to weight ratio with the help of very highly
tuned exhaust systems. The exhaust system is manufactured in the Simonini factory for each engine
type and in different models to adapt it to several aircraft models.
Stop: Do not attempt to make any changes to the Simonini Exhaust Systems.
Any changes will invalidate the warranty and may severely reduce the performance and power
output of the engine. Any changes will affect adversely the fuel economy as well as the reliability
of the engine.
Vibrations caused by incorrect mounting and fixing of the exhaust system will result in a reduced
life span of the exhaust system.
Ensure that the entire system is free from vibrations through the entire range of power settings.
Ensure that there is no harmonic resonance or vibration present due to the engine, propeller and
aircraft combination. This means that you must mount the exhaust system on shock resilient
mounts.
Ensure that the ball joints of the various exhaust system components are lined with an antigalling
product (e.g. copper loaded grease or graphite dry lubricant).
Secure the exhaust system to the aircraft.
Secure all the springs by loosely wire locking them. We furnish silicon tubes to ensure a longer
and better life to the springs.
9. REDUCTION GEARBOX
The Simonini Victor 2 Plus / Victor 2 Super engine comes fitted with the Simonini Type "C"
gearbox. There are various ratios that the customer cans specify when ordering. Please confirm
and check that you have the correct reduction gear ratio for your combination of propeller, aircraft
and engine.
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