
Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Prepare the fuselage
Tuesday, April 6, 2010
28 of 343
Upper fuselage penetrations
Mark a centreline between the bolt holes in the front and rear wing attach lugs: this will be the
height of the centre of the fuel gauge opening.
Now double check the measurement marked
“290mm” in the photos above and at right:
measure in the wing root from the wing lug
back to the centre of the gauge as shown at
right and note the distance, then measure on the fuselage from
the
inside
(
not
the outside – see detail at left) of the wing
attach lug the exact same distance (which should be
very
close
to 290mm) then mark and drill the pilot hole for the fuel
gauge opening. Recheck your measurements and then use a
2¼” hole saw to cut the gauge hole: drill a pilot hole first.
Measure back 35mm from the inside of the wing lug and drill
a 12mm hole for the stall warning tube as shown at left.
To mark the aileron cable slot, draw a line up from the front of the gauge opening and another
line level with the top of the gauge opening, and then mark the slot at 65mm wide and 15mm
high in
front
of the gauge opining. Drill both ends to 15mm and use a jigsaw to cut between
the holes. File the top and bottom of the slot to a smooth and even finish.
Fuel line conduit, upper cabin
Mark a position 45mm behind and 20mm below the rearmost wing mounting lug on each side
of the fuselage (position shown in the photo at the top of this page, the lines in green).
Drill a pilot hole that point and then enlarge to 32mm. Elongate each hole with a half-round
file so that one length of the 32mm plastic conduit can be fitted into each hole at an acute
angle with the inboard part of the conduit facing backwards into the cabin so that the fuel
lines can be routed along the side of the cabin above the side window. Cut the outer end of the
conduit so that it sits flush with the outside skin of the fuselage.
Fit each plastic conduit in place with 5
minute Araldite mixed with flock, seal
around and wipe off any excess then leave to
cure. Remove any rough edges, paying
particular attention to the inside of the
conduit where the fuel lines will pass though
– it is
very
important that the fuel lines will
not be able to rub against any rough edges.
Measure
from here!
35mm
290mm
290mm
2¼” dia
35mm
65mm
15mm high
45mm
from rear
of lug
20mm from
bottom of lug
Содержание J450
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Страница 167: ...Jabiru J450 Constructors Manual Pre Paint Wings Cut aileron cable openings Tuesday April 6 2010 167 of 343...
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