JetLegend T-45 Goshawk
Page 22 of 24
running past the tailpipe. All air lines should
be secured in the same way.
It is highly recommended that you use some
sort of header tank for your engine. This can
be a BVM Ultimate Air Trap or equivalent, or
simply a small(six ounce or so) fuel tank that
has a geometrically centered pickup. Either
one should have a third line installed for filling
the tanks, and the main tank should have
tubing installed on the vent line that goes
either back to your fuel can or to a taxi tank to
keep fuel from spilling inside the fuse when
the main tank reaches full as you fuel it up. A
taxi tank is simply an external fuel tank that
sits on the wing and feeds the engine until
you are ready to take off, then is removed
before flight, so you can always take off with
the main tank topped off.
You may want to leave your ECU battery
pack installation for last, so as to be able to
move it around for final CG balancing.
If you plan on using the molded cockpit tubs,
be aware of how they protrude into the radio
compartment as you plan your installation.
You can cut off the bottoms of the tubs and
make them less deep if you like, or not use
the cockpit tubs at all, or just make a flat floor
for the pilot figures as alternatives if you need
more room in the radio compartment area.
84. Tail pipe must be installed in the fuse
before the engine is put in, otherwise, you will
not be able to get it in. It is also helpful to drill
two holes in the mounting ears for the pipe
BEFORE you put the pipe in the fuse, so as
to avoid putting stress on the unsupported
rear portion of the engine mounts while trying
to drill through the stainless steel pipe
mounting ears. Do not secure the pipe with
the two required screws until the engine is
first installed. After the engine is bolted down,
check that the pipe is centered, and has
proper spacing between the engine and
bellmouth(see your engine manufacturer's
recommendations for this dimension, it
varies), THEN screw the pipe down to the
wooden mounts.
85. Engine is secured with four screws or
bolts. You may need to grind away some
portion of the factory mounts to get your
engine in, or you may need to space out the
mounts with plywood. Either way, make sure
everything is well-epoxied and secure, do not
be afraid to add more plywood as needed.
86. Propane tank secured to front engine
mount former and intake with silicone glue.
87. Header tank secured to the fuselage side
and intake using plywood plates and velcro.
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