Jabiru J450 Constructors Manual
Post-Paint>Wings>Fit stall warning
Tuesday, April 6, 2010
281 of 343
Post-Paint>Wings>Fit stall warning
Objectives of this task:
To fit the stall warning device to the left wing.
Materials required:
Card #6: „
Stall warning
‟
5-minute Araldite and flock
Mark and drill the wing root
Mark a position in the left-hand wing root 155mm back from the leading edge, 35mm behind
the front wing attach lug, and drill a 10mm hole at that location in line with the wing attach
bolthole in the front lug. The clear plastic stall warning tube will enter the wing here.
Assemble the stall warning
Use 5-Minute Araldite and flock to fix the aluminium stall
warning funnel to the plate, about 4mm back from the
front edge, and then cut the stainless steel gauze to size
and flock it by the edges to the front of the funnel as
shown at right. Leave to cure, then round the front edges
of the plate carefully. Roughen the sides and bottom of the
assembly.
Mark and cut the leading edge
Measure out 1195mm from the wing root of the left-hand
wing and mark the location. Use cloth tape to protect the
paint on the leading edge of the wing during this step.
Using the drawing on the next page, locate the vertical
centre of the stall warning aperture and mark the location.
Recheck your measurements carefully and drill a pilot
hole, then widen the hole to 10mm and file carefully out
to a rectangle 12mm high and 19mm wide. The top of the
opening should be
precisely
on the leading edge of the
wing. Final size the hole to fit the stall warning assembly.
Hold the lip at the bottom of the assembly with pliers
while fitting – be careful not to drop it inside the wing.
Fit the stall warning assembly
Use a steel rod to feed the plastic tube in from the wing
root and through the wing ribs until it can be seen though
the hole in the leading edge, then pull the tube through
using a wire hook and glue and lock wire the tube to the
rear of the stall warning funnel.
Apply 5-Minute Araldite and flock to the bottom and
sides of the stall warning assembly and carefully slide it
back into the wing until the gauze is flush with the leading
edge of the wing and leave to cure. Remove the protective
cloth tape.