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middle. Move the undercarriage forward and attach the mast
to the proper hang point location on the wing keel. Consult
the POH for the proper hang point for desired trim, speed,
and loading at this time. Attach the backup cable at this time
also. [Figure 5-29]
5-12
Figure 5-33. Installing the seats.
Figure 5-32. Attaching the front tube.
Figure 5-31. Lifting the wing up into position.
Figure 5-30. Wing in position and carriage chocked to lift the
wing.
Lift up the nose and let the carriage roll backward until the
wing is level and the control bar is in front of the front wheel
of the carriage. Engage the parking brake and chock the back
of the carriage wheels. Ensure everything in the fl ight deck is
free and clear so the wing can be lifted freely into position.
[Figure 5-30] Lift the wing into position and lock the
carriage mast. This position is unique to each manufacturer
as some masts hinge above the fl ight deck. Refer to the POH
for details on a specifi c aircraft. [Figure 5-31] Install the
carriage front tube. Secure the control bar to the front tube
with a bungee. [Figure 5-32] Attach any fairing or seats as
required. [Figure 5-33]
An alternate method of setting up the wing is to do so on the
ground. This is not preferable because the sail is susceptible to
getting dirty. However, this method could be used for setting
up wings if it is windy or if recommended by a particular
manufacturer. The ground method steps are the same as
those in the assembly procedure except after the control bar
is assembled, the wing is rolled over so the control frame is
under the wing. The wing is assembled as if it were standing
on its control frame. After the wing is tensioned, the nose is
lifted, the control frame pulled forward, and the nose wire
secured. This is not a common practice, and the POH should
be reviewed for details on this method if it is allowed by the
manufacturer.
Taking Down the WSC Aircraft
Find a suitable area to take down the wing, preferably grass,
cement, or pavement out of the wind. The best place is in
a large hangar so no wind gusts can affect the takedown. If
outside, align the wing perpendicular to the wind.
5-13
Figure 5-34. Padding the keel and kingpost with the right hand sail
over the top of the leading edge.
Figure 5-35. Left hand side rolled up and secured with wing tie.
Rolling right hand sail which will also be secured with wing tie.
Figure 5-36. Securing both leading edges together so the wing
easily fits into the bag.
Figure 5-37. Control bar folded down along leading edges but
wires not yet organized.
It is important to note that during the take down process, all
protective pads must be put in the proper place so that no
hardware can rub against the sail or frame during transport.
The POH should specify what pads go where. Overall,
pad everything along the wing keel plus the kingpost to
prevent cosmetic and/or structural damage occurring during
transport.
Taking down a WSC aircraft is done in the reverse order of
assembly with the following additional steps provided to get
the wing neatly packed and organized into the bag. After the
wing is detensioned and the battens have been removed from
the wing, keep the right and left battens separate for easier
sorting during the next assembly.
Carefully bring the wings in towards the keel and pull the sail
material out and over the top of the leading edges. Lower the
kingpost and pad it top and bottom. This is also the time to
pad the area underneath where the control frame is attached
to the keel and where the wires are attached to the rear of
the keel. [Figure 5-34] Bring the leading edges to the keel
and keep the sail pulled out over the top of the leading edge,
roll it up, and tuck the sail into the leading edge stiffener.
Fasten around the leading edge with sail ties. [Figure 5-35] It
is best to take one sail tie and secure the two leading edges
together so it fits into the bag. [Figure 5-36] Continue with
the reverse order (bag on, flip wing over, and disassemble
control frame at downtube and control bar junction). After
the control frame is disassembled and laid flat along the wing
as shown, the wires are not organized. [Figure 5-37] Pull
the cables forward towards the nose and organize them so
they are straight. Install the protective control frame pads
and carefully zip up the bag while tucking everything in so
there is no stress on the zipper. [Figure 5-38]
5-14
Figure 5-39. Left hand wing tip twist adjustment shown without
sail.
Sail Tension Markers
For more twist, rotate up
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Weight-Shift Control Aircraft Flying Handbook(56)
