Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Pre-fit wheel spats
Tuesday, April 6, 2010
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Check that the tire has about 5mm clearance all round the bottom of each spat, then remove
the spats and set aside for painting. Completed main wheel spats are shown above.
Nose wheel spat
The nose wheel spat is in 2 sections, front and back. The front section is fitted to the nose
wheel with the axle bolt and a single threaded screw into each side of the nose leg yoke, while
the rear section is attached to the front section with 8 x 3/32” screws into captive nuts.
Start by fitting both sections together and
taping them to each other, then drill 3/32”
holes around the join, 4 on each side, for the
captive nuts that will hold the 2 halves
together as shown at right.
Countersink the screw holes in the front
section and fit captive nuts (shown above) to
the rear joggle – use countersunk 3/32” rivets
to hold the captive nuts in place.
Screw both halves of the spat together and
check the fit around the gear leg opening in
the top of the spat. Trim the gear leg opening
so that it is even on both sides. The opening
should look like the example shown at right:
note that the rear of the opening (arrowed in
green) is slightly
behind
the join line.
While the spat halves are screwed together,
measure back 55mm from the axle bolt on
the left-hand side only and drill a 1 1/8” hole
for access to the tire valve.
Grind out a gentle notch in the joggle of the
rear section of the spat (as circled at right) to
allow clearance for the front axle spacers.
Captive nuts fitted to the joggle can be seen
in the photo at right.
Captive
nuts and
screws
Axle
nut
Machine
screw
Valve
access