Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Prepare the fuselage
Tuesday, April 6, 2010
27 of 343
Remove peel cloth
Remove the peel cloth from the vertical fin stub and around the rear of the empennage
generally, including around the horizontal stabiliser opening. Lightly sand around the edges of
the areas under the peel cloth to remove any peel cloth threads that remain.
Rear of the empennage
Start by cutting off the surplus at the back of the vertical fin
stub so that it is flush across the top rear of the empennage rib
(circled at right): the fin spar will be bonded to this rib it this
is
very
important that this surface is flat.
At the rear of the empennage there is a rectangular hole
(shown finished at right) that will need to be enlarged.
Enlarge the rectangular hole to 80mm wide and 170mm long
– this is wide enough to remove the slight upward slope of the
vertical fin stub profile and wide enough to work through
when the horizontal stabiliser is later mounted, after which
you will fill the hole in to make a smooth curved surface
across the top rear of the empennage.
Vertical fin stub
The rudder cable passes from the empennage and through the fin stub as does the static line,
VHF antenna cabling and strobe wiring (if you elect to have a tail strobe). All these items
require access into and though the fin stub.
Start by marking and cutting the rudder cable slot on the right-hand side of the fin stub:
measuring from the rear of the stub the slot starts at 140mm and finishes at 210mm. The slot
is located half way up the stub. Drill each end of the slot to 15mm and jigsaw the slot out, and
then sand any rough edges away.
The 30mm access hole on the left-hand side
of the stub has its centre located at 120mm
from the rear of the stub.
The 2 x 30mm access holes in the top of the
fin stub have their centres located at 50mm
and 300mm from the rear of the stub.
Drill the rear hole through just the stub and
the front hole through both the stub and the
fuselage.
300mm
50mm
210mm
120mm
140mm