5
3 Propeller mounting
The propeller is secured by a securing ring which is clamped in a groove in the turn of the
propeller shaft. This retaining ring holds the propeller securely on the shaft, even if the nut
should be solved in the case of an abrupt motor standstill.
The engine must under no circumstances be started when the retaining ring is not
seated properly in the groove completely missing or the nut is not tightened.
3.1 Propeller
The choice of propeller depends on the type of model aircraft. You can use either two-blade,
three-bladed, and four-blade propellers.
Only mount well balanced propeller to ensure a smooth and vibration-free operation.
Operation not balanced propellers leads to engine damage and is therefore not permitted.
Check the propeller. Does the propeller have any cracks, chipped edges or other
damages, the engine must not be started.
4 Engine cover and hood
For optimum temperature conditions - even at full power - have the exhaust ports in total, the
same size as the air intake in order to ensure free circulation of cooling air and to prevent
overheating of the engine.
If necessary, install baffles that direct the cooling air less than five mm above the surface of
the cylinder along.
Heat accumulation leads to overheating of the engine with the probable result of a
severe to final engine failure.
5 Ignition system
The ignition is supplied with electrical energy from a LiPo battery type with 11,1 volts
(switched two cells in series).
For security reasons, we recommend the installation of a switch (on / off ignition) indicates
the status of an optical signal and is connected between the power source and the ignition.
This switch should be mounted at a location that is easily visible and accessible in order to
ensure an easy and safe operation.
Similarly allows you to bring the motor if necessary to an immediate standstill of these
switches.