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26
SINUS motorglider
Normal procedures
REV. 0
Introduction
This chapter provides information on everything needed to fly Sinus ultralight motorglider safely.
Assembling and disassembling the aircraft
CAUTION!
be placed inside a closed space. Under no circumstances attempt to assemble or disassemble any
parts of the aircraft in the sun or at temperatures higher or as high as 20°C for you will not be able to
assemble certain parts.
Assembling the wings
Three people are needed to assemble the
wings to the fuselage.
First block all three wheels for the fuselage to
stay in position. If your aircraft has been deliv-
ered in a container, make sure you reapply the
washers onto the tail wheel fork (Virus TW) cor-
rectly - one on the inside, one on the outside of
the fork - at both sides.
Clean and grease the main wing pins and
insertion openings. Inside the cockpit set the
flap handle to neutral position and leave the
spoilers' handle hanging down freely. Make
sure you have all bolts, nuts, washers and span-
ners needed at a reach of a hand.
Lift one wing-half (one person at each end)
and bring it closer to the fuselage. While the
two are holding the wing-half high up, the
third person directs their movement to put
the wing's main spar into the opening on the
adjacent side of the fuselage. As the wing is
about 10 cm away from its final position, fit the
electrical cables, fuel hose and pitostatic lines
through the opening.
Now push the wing-half into its final position
slowly. The person closest to the fuselage must
make sure the spoiler and flap connectors have
fitted into adequate fuselage fittings prop-
erly. At the same time, the person holding the
wingtip must start with slight circular move-
ments (1cm each direction) in order to assure a
tight fit of the wing and its adequate bushings.
As this is done the person at the wingtip must
remain in positon holding the wing, whereas
the other two move over to the other wing-
half, lift it and bring it closer to the fuselage.
Again, all cables, hoses and lines must be fitted
Prior to each assembling or disassembling action Sinus ultalight motorglider must
through the openings prior the wing-half be-
ing pushed into its final position.
Do not forget to make sure the spoiler and flap
connectors have fitted into adequate fittings
properly on this wing-half as well.
Both wing-halfs should now be in their final
position but still being held at wingtips. The
person not holding the wings must now open
the cabin door and insert both pre-greased
spar pins. First insert the pin on the right-hand
side of the cockpit because of easier insersion
(thinner spar infront), then the pin on the lefe-
hand side of the cockpit.
If necessary, the two at the wingtips can assist
by rocking the wings a couple of
millimeters up and down.
Only when both spar pins have been inserted
and secured, wingtips may be released and
door fully opened and fastened to the wing.
Now check all control deflections as well as
flap and spoilers' extensions for smooth,
unobstructed movement.
Insert all bolts and pins and secure them with
self-locking nuts. Do not forget to put alumini-
um washers underneath the nuts!
Connect all electical clables, fuel hoses and
pitostatic lines to their adequate fittings.
Screw on the pitot tube on bottom side of the
right wing at aproximately 2/3 of the wing-
span. Be extra careful not to switch the two
tubes as this causes misinterpretation of
indicated airspeed!
Finally tape the gap between the fuselage and
the wing using self-adhesive tape.
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