Fei Bao MB-339 Instruction Manual - page 13
13
photo 23 – engine mounted in lower bypass
Shim the engine as necessary to make sure it is centered in the
pipe and is aligned with the slope of the pipe from front to rear.
When you are satisfied, bolt the engine to the side frames with
wood screws. Remove the screws and coat the thread holes
with thin CA. This will harden the wood. Connect service lines
to the turbine and bolt permanently in place (
photo 23
).
photos 24 and 25 – rear component board. Note receiver position on upper right.
Drill and secure the bypass to the engine mounting rails with
four wood screws if necessary.
If the pipe is loose as it passes through the rear former, glue a
piece of ply at the top of the former to hold the pipe more firmly
in place. Access is from the rear.
Complete the installation of engine components on the rear
component board. Remember to leave clearance for the cockpit
above. The placement of components in the prototype,
including the smoke system, is shown in
photos 24
and
25
. The
rear component board has been raised slightly for installation of
smoke tanks beneath.
Resist the temptation to hide wires away under the component
boards, as it will make future maintenance more difficult. Keep
things neat but accessible.
Step 10: Wing Landing Gear and Doors
You will find it easier to route air and servo lines if you enlarge
the access hole in the wing root with a carbide cutter (
photo
26
).