FES Maintenance manual, v1.16 May 2020
Page 16 of 24
4.2.6 Storing and transportation
A FES sailplane should be transported and stored in a high-quality enclosed trailer
constructed of metal or fiberglass reinforced plastics with adequate insulation and
ventilation characteristics.
−
Lighter fuselages
can be secured against forward and jumping motions with a
nose cone support in the shape of the spinner with a recess for propeller blades in
the horizontal position, covered with a soft and thick material.
−
We recommend
securing
heavier fuselages
with the support that holds fuselage
behind the spinner. Otherwise, the loads on motor and propeller blades could be
too high and damage them during transportation on bad roads.
We recommend using soft cotton canopy cover, which covers the nose of
the sailplane and prevents the opening of propeller blades.
If you are not using a canopy cover, use FES propeller blade covers to prevent the
propeller blades from opening when pulling the fuselage out of the trailer.
The fuselage dolly should be positioned just forward of the main landing gear
opening. Forward stop or a belt must be provided for the fuselage dolly to prevent the
fuselage from slipping forward and leaving it without support.
4.2.7 Cleaning
Avoid cleaning with water around the FES motor and battery compartment area.
Clean the spinner and propeller blades with a wet sponge or soft cotton towel. Tape
adhesives are best removed using pure petroleum spirits or nitro thinner.
4.2.8 Inspection at the end of flight season
At the end of the flying season or before long storage of the glider in a hangar or a trailer,
store the FES Battery packs in a dry, warm place (room temperature). The battery pack is
best stored when cells have a voltage of 3.7 V per cell, which is equal to ca. 52 V per pack
or ca. 104 V total system voltage
–
displayed by the FCU instrument.