Get Ready For The Use - Vittorazi Motors Moster 185 Classic User Manual

4.0 Get ready for the use

4.1 Propeller choice and mounting
Make sure you have a suitable and guaranteed propeller by Vittorazi for your motor.
The use of the propeller Vittorazi guarantees to our motors a perfect operation in
every condition of flight. Thanks to the continuous studies, on the test-bench it and to
the experiences in flight, we are able to realize propeller able to assure:
absence of vibrations and stability during the time;
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best performance of the motor and improve fuel consumption;
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reduced noise emissions in relationship to the propeller diameter and to the
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reduction;
best cooling of the components.
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Every single motor produced by Vittorazi is tested with its own propeller before the
delivery. In case of use of a propeller not recognized by Vittorazi, anomalies of
operation not related to the motor may occur, for instance:
components break-ups caused by vibration;
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overheating of the thermal group;
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excessive noisiness;
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excessive fuel consumptions or insufficient thrust;
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non-constant power output.
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The use of a not conform propeller with consequent anomalies already listed above or
the use of a right propeller Vittorazi but combined to a wrong reduction ratio, or the
use of accessories or components which are not authorized for this engine,
immediately voids of the warranty (see chapter 11.3).
Attention: the propeller can be mounted in two opposite positions compared with the
reduction drive. Ask the authorized dealer or the instructor, if you are not sure about the
propeller assembling.
In all versions of model Moster185 the propeller rotation is counterclockwise, considering
the back view (as per picture 4.1). Push the propeller against the reduction drive, until it
is completely inserted. Now gently screw the bolts up to the end. Be sure that the bolts
are suitable to the propeller in use, therefore the thread of the bolts is inserted for at
least 12mm (for carbon propellers) and 15mm (for wooden propellers) in the hub. Now
tighten the bolts of the propeller, trying to apply the same pressure on all points,
(picture 4.1). Do not exceed with the pressure on the bolts; you a risk to crush the
propeller.
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