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The stab tube is already complete and ready for you
to use, no more needs to be done other than fit the
tube to the stabs. The retention bolts have been pre
fitted for you, and only requires you to fit the stabs to
the fuselage. The stab tube may already be marked
with L and R, to help you distinguish the correct orien-
tation. If not, don t stress, it can only go one of two
ways!
Before you attach the stabs to the fuselage you will
need to make the exit for the elevator servo leads.
Essentially the elevator servo lead can exit pretty
much anywhere between the stab tube and anti rota-
tion dowel. But it does need to be in line with both of these holes. However be aware there is a former just aft of the
rotation dowel hole. A good location is 25mm forward of the stab tube.
The servo lead needs to be protected in some way from the harshness of the fibreglass fuselage. The edges of the
fibreglass will quickly wear through the protective coating of the unprotected extension lead. Rubber grommets are
readily available from most good hardware stores. Select a grommet that is large enough to allow the lead ends to
squeeze through. About 15-20mm will do fine. You don t want it too big, so as the lead falls back through.
Making a hole large enough for a grommet to fit is a simple job with a RC car body reamer! Simply push into your
marked position and start turning. The reamer will remove the material quite efficiently without tearing. If you choose to
use a drill bit, please be very careful, often the drill bit can bite and tear at the fibreglass. Pass your lead through the
grommet and insert the grommet into the fuselage. You may want to use a clip to secure the extension lead to the side
of the fuselage as shown.
Sukhoi SU 31—2.75m/2.6m
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